/* =========================================================================
   YOUHANNA MAHER ABADIR - PORTFOLIO STYLES
   ========================================================================= */

:root {
    /* Color Palette - Deeper Premium Dark Theme */
    --bg-main: #050507;
    --bg-surface: rgba(18, 18, 22, 0.7);
    --bg-surface-solid: #121216;
    --bg-surface-hover: rgba(26, 26, 32, 0.8);
    --bg-alt: #08080a;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent-primary: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.4);
    --accent-secondary: #10b981;

    --glass-bg: rgba(10, 10, 15, 0.75);
    --glass-border: rgba(255, 255, 255, 0.08);

    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.15);

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Transitions - High Velocity Snap */
    --transition-fast: 0.22s cubic-bezier(0.23, 1, 0.32, 1);
    --transition-base: 0.35s cubic-bezier(0.23, 1, 0.32, 1);
    --transition-slow: 0.6s cubic-bezier(0.23, 1, 0.32, 1);

    /* Layout */
    --container-width: 1200px;
    --navbar-height: 80px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.35);
}

/* Light Theme Overrides */
:root.light-theme, body.light-theme {
    --bg-main: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-hover: #f1f5f9;
    --bg-alt: #f1f5f9;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;

    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.15);

    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(0, 0, 0, 0.08);

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.15);
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    /* Only enable for desktop to avoid mobile direction-change lag */
    scroll-behavior: smooth;
    overflow-x: hidden;
    /* Native buffer for the fixed navbar */
    scroll-padding-top: 100px;
}

@media (max-width: 768px) {
    html {
        scroll-behavior: auto; /* Use high-velocity native momentum */
    }
}

/* Global Dynamic Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-main);
}

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* 0.75x Zoom Logic - Global High-Density View */
.page-scaler {
    zoom: 0.75;
}

/* Scale the internal content of popups/modals - 0.8 as requested */
.modal-content, .lightbox-content {
    zoom: 0.8;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden !important; /* Total viewport protection - NO ZOOM OUT allowed */
    -webkit-font-smoothing: antialiased;
    width: 100vw;
    position: relative;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 600;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-primary-hover);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

.bg-alt {
    background-color: var(--bg-alt);
}

.text-center {
    text-align: center;
}

.mt-2 {
    margin-top: 2rem;
}

.mt-4 {
    margin-top: 4rem;
}

.w-100 {
    width: 100%;
}

.highlight {
    color: var(--accent-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1rem;
    font-family: var(--font-body);
    border: none;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--accent-primary-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background-color: var(--bg-surface-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Section Headers */
.section-header {
    margin-bottom: 4rem;
    text-align: center;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

.divider {
    height: 4px;
    width: 60px;
    background: linear-gradient(90deg, var(--accent-primary), transparent);
    margin: 1.5rem auto 0;
    border-radius: 2px;
}

/* Navbar & Global Header Overhaul */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    background-color: transparent; /* Seamless on load */
    border-bottom: 1px solid transparent;
    padding: 1.25rem 0; /* Slightly larger on top */
}

.navbar.scrolled {
    background-color: rgb(5, 5, 7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    padding: 0.75rem 0;
}

/* DEEP ISOLATION OVERLAY - GUARANTEES ZERO TRANSPARENCY */
.navbar.mobile-menu-open {
    background: rgb(0, 0, 0) !important;
    background-image: linear-gradient(to bottom, #000000, #000000) !important; /* Force GPU-rendered solid layer */
    opacity: 1 !important;
    visibility: visible !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    isolation: isolate !important; /* Prevents blending with page glows/content */
    mix-blend-mode: normal !important;
    transition: none !important; 
    border-bottom: 1px solid var(--border-color);
}

/* Light mode support for solid navbar */
:root.light-theme .navbar.scrolled,
:root.light-theme .navbar.mobile-menu-open,
body.light-theme .navbar.scrolled,
body.light-theme .navbar.mobile-menu-open {
    background-color: #ffffff !important;
    background: #ffffff !important;
    background-image: none !important;
    color: #000000 !important;
}

/* Glass Card Global Base */
.glass-panel {
    background: var(--bg-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-base);
}

.glass-panel:hover {
    background: var(--bg-surface-hover);
    border-color: var(--accent-primary);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5), 0 0 20px rgba(59, 130, 246, 0.1);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    position: relative;
    z-index: 6000; /* Keep branding and X button above the overlay */
}

.brand-name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-primary);
    letter-spacing: -0.05em;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--accent-primary);
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.theme-toggle-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: color var(--transition-fast);
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle-btn:hover {
    color: var(--accent-primary);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
        align-items: center;
    }

    .nav-content {
        gap: 1rem;
    }

    .mobile-menu-btn,
    .theme-toggle-btn {
        font-size: 1.5rem;
    }
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 60px; /* Header Height */
    left: 0;
    right: 0;
    bottom: 0; /* Ensures it fills only the visible viewport, not 100vh which can cut off content */
    background-color: var(--bg-main) !important;
    background: var(--bg-main) !important;
    opacity: 1 !important;
    visibility: visible !important;
    isolation: isolate !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    mix-blend-mode: normal !important;
    flex-direction: column;
    padding: 1rem 0 120px 0; /* Increased bottom padding to prevent the last item (Contact) from being hidden by browser bars */
    z-index: 99999;
    overflow-y: auto;
    pointer-events: auto;
    -webkit-overflow-scrolling: touch; /* Smoother scrolling for iOS */
}

/* Light Theme Override for Solidity & Visibility */
:root.light-theme .mobile-nav, 
body.light-theme .mobile-nav {
    background-color: #ffffff !important;
    background: #ffffff !important;
    background-image: none !important;
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav-link {
    padding: 1.5rem 2.5rem;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    text-decoration: none;
    transition: all 0.2s ease;
    width: 100%;
}

.mobile-nav-link:active {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--navbar-height);
    padding-bottom: 3rem;

    overflow: hidden;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
}

.hero-glow {
    position: absolute;
    top: 30%;
    right: 10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(10, 10, 12, 0) 70%);
    border-radius: 50%;
    z-index: -1;
    pointer-events: none;
}

.hero-content {
    flex: 1;
    max-width: 650px;
}

.hero-image {
    flex: 1;
    max-width: 450px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-image img {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1/1;
    object-fit: cover;
    border-radius: 30px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(59, 130, 246, 0.1);
    transform: rotate(3deg);
    transition: transform var(--transition-slow);
}

.hero-image:hover img {
    transform: rotate(0deg) scale(1.02);
}

.hero-greeting {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.hero-name {
    font-size: clamp(3.2rem, 8vw, 5.5rem);
    font-weight: 800;
    line-height: 1.0;
    letter-spacing: -0.04em;
    margin-bottom: 0.5rem;
    display: block;
}

.hero-title {
    font-size: clamp(1.4rem, 4vw, 2.2rem);
    font-weight: 300;
    color: var(--text-secondary);
    line-height: 1.2;
    letter-spacing: 0.02em;
    margin-bottom: 2rem;
    display: block;
    opacity: 0.9;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.highlight-tag {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.highlight-tag i {
    color: var(--accent-primary);
}

.cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.stat-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    transition: transform var(--transition-base), border-color var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
}

.stat-number {
    font-size: 2.5rem;
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Expertise / Capabilities */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.expertise-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 12px;
    transition: all 0.35s cubic-bezier(0.23, 1, 0.32, 1);
}

.expertise-card:hover {
    background-color: var(--bg-surface-hover);
    border-color: var(--border-hover);
    transform: translateY(-5px);
}

.expertise-icon {
    font-size: 2rem;
    color: var(--accent-primary);
    margin-bottom: 1.5rem;
}

.expertise-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.expertise-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Projects Cards */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-surface);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
}

.project-img-wrapper {
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
    position: relative;
    background-color: var(--bg-alt);
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-img {
    transform: scale(1.05);
}

.project-category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(4px);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid var(--border-color);
}

.project-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.project-summary {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.project-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.stack-tag {
    font-size: 0.75rem;
    color: var(--text-muted);
    background-color: rgba(255, 255, 255, 0.03);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

/* Experience Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 20px;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 3rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 13px;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    border: 3px solid var(--bg-main);
    box-shadow: 0 0 0 2px var(--accent-primary-hover);
}

.timeline-date {
    font-size: 0.875rem;
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: 0.25rem;
    display: inline-block;
}

.timeline-content {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 12px;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.timeline-content:hover {
    border-color: var(--border-hover);
    transform: translateX(5px);
}

.timeline-role {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.timeline-company {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.timeline-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Certifications */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 2rem 1.5rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.23, 1, 0.32, 1);
}

.cert-card:hover {
    border-color: var(--accent-primary);
    background-color: var(--bg-surface-hover);
    transform: translateY(-3px);
}

.cert-icon {
    width: 48px;
    height: 48px;
    background-color: rgba(59, 130, 246, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.cert-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.cert-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Education */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.education-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 12px;
    transition: all 0.35s cubic-bezier(0.23, 1, 0.32, 1);
    cursor: pointer;
}

.education-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 20px -5px rgba(59, 130, 246, 0.2);
}

.edu-school {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.edu-degree {
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: 1rem;
}

.edu-highlights {
    list-style: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.edu-highlights li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.edu-highlights li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
}

/* Contact Hub & Mode Toggling */
.contact-hub-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.contact-tabs-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 2.5rem;
}

.contact-tabs {
    background-color: var(--bg-surface);
    padding: 0.4rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    display: flex;
    gap: 0.25rem;
}

.contact-tab-btn {
    background: transparent;
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.contact-tab-btn i {
    font-size: 0.9rem;
    opacity: 0.7;
}

.contact-tab-btn:hover {
    color: var(--text-primary);
}

.contact-tab-btn.active {
    background-color: var(--accent-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.contact-tab-btn.active i {
    opacity: 1;
}

.contact-mode-container {
    display: none;
    animation: fadeInScale 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-mode-container.active {
    display: block;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.98);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Premium Booking Card */
.booking-card-premium {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.booking-intro {
    padding: 2.5rem;
    display: flex;
    align-items: center;
    gap: 2rem;
    background: linear-gradient(to right, rgba(59, 130, 246, 0.03), transparent);
    border-bottom: 1px solid var(--border-color);
}

.booking-icon-wrapper {
    width: 64px;
    height: 64px;
    background-color: rgba(59, 130, 246, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    font-size: 1.75rem;
    flex-shrink: 0;
}

.booking-text h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.booking-text p {
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 600px;
}

/* Booking Content Layout */
.booking-card-body {
    padding: 0;
}

.booking-intro-content {
    padding: 2.5rem;
    padding-bottom: 0;
}

.booking-benefits {
    list-style: none;
    padding: 2.5rem;
    padding-top: 1.5rem;
    padding-bottom: 2rem;
    /* Add space for the calendar */
    margin: 0;
    display: grid;
    gap: 1rem;
}

.booking-cal-container {
    width: 100%;
}

.booking-cal-container iframe {
    border-radius: 0 0 16px 16px;
    min-height: 750px !important;
}

.booking-benefits li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: 1rem;
}

.booking-benefits li i {
    color: var(--accent-secondary);
    font-size: 1.15rem;
}

.booking-cta {
    display: flex;
    justify-content: center;
}

.btn-booking {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 10px 20px -5px rgba(59, 130, 246, 0.4);
}

.btn-booking i {
    transition: transform 0.3s ease;
}

.btn-booking:hover i {
    transform: translateX(5px);
}

.contact-form {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

@media (max-width: 768px) {
    .booking-intro {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.25rem;
        padding: 1.5rem;
    }

    .booking-text h3 {
        font-size: 1.25rem;
    }

    .contact-tab-btn {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: var(--font-body);
    transition: border-color var(--transition-fast);
    appearance: none;
    /* Hide default arrow */
    -webkit-appearance: none;
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23a1a1aa'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.25rem;
    padding-right: 2.5rem;
    cursor: pointer;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.file-upload-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    background-color: var(--bg-main);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.file-upload-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background-color: rgba(59, 130, 246, 0.02);
}

.file-upload-btn i {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.file-upload-btn span {
    font-size: 0.95rem;
    word-break: break-all;
}

.file-upload-btn.has-file {
    border-style: solid;
    border-color: var(--accent-secondary);
    color: var(--accent-secondary);
    background-color: rgba(16, 185, 129, 0.05);
}

/* Footer */
.footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-brand h3 {
    margin-bottom: 0.25rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    padding: 2rem;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow-y: auto;
    /* High-Performance Themed Scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--accent-primary) var(--bg-surface);
    transform: translateY(20px);
    transition: transform var(--transition-base);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
}

.modal-content::-webkit-scrollbar {
    display: block;
    width: 6px;
}

.modal-content::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 10px;
}

.modal-content::-webkit-scrollbar-track {
    background: var(--bg-surface);
}

.modal.active .modal-content {
    transform: translateY(0);
}

.cert-modal-content {
    overflow: hidden !important;
    height: 88vh; /* Perfectly matched to standard project modal height */
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-surface);
    border-radius: 16px !important;
}

.cert-modal-content .modal-body {
    padding: 1.5rem 2.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden; /* No scrolling in the body anymore */
}

.cert-modal-header {
    text-align: center;
    margin-bottom: 1rem;
}

.cert-modal-title {
    font-size: 1.25rem;
    line-height: 1.2;
    margin-bottom: 0.25rem;
}

.cert-modal-issuer {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.cert-visual-container {
    position: relative;
    margin-bottom: 0.5rem;
    background: transparent; /* Cleaner display for full image fit */
    border-radius: 12px;
    overflow: hidden;
    flex: 1; /* Expand to use all available space */
    display: flex;
    flex-direction: column;
}

.cert-slider {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.cert-img-wrapper {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: zoom-in;
    position: relative;
}

.cert-main-img {
    max-width: 100%;
    max-height: 100%; /* Use full container space without cropping */
    object-fit: contain !important; /* Forces the image to FIT within its box */
    display: block;
    margin: auto;
}

.cert-img-hint {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.cert-img-wrapper:hover .cert-img-hint {
    opacity: 1;
}

.cert-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 5;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.cert-nav-btn:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-50%) scale(1.1);
}

.cert-nav-btn.prev { left: 1rem; }
.cert-nav-btn.next { right: 1rem; }

.cert-counter {
    text-align: center;
    padding: 0.35rem 0.8rem;
    background: rgba(59, 130, 246, 0.08); 
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-primary);
    letter-spacing: 1px;
    margin: 0.25rem auto 0.5rem; /* Drastic reduction in vertical space */
    width: fit-content;
}

.cert-modal-actions {
    display: flex;
    flex-direction: row;
    gap: 1rem;
    justify-content: center;
    margin-top: auto; 
    padding: 0.75rem 0 0.25rem; /* Tighter footer bar */
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.cert-modal-actions .btn {
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    justify-content: center;
}

.cert-pdf-btn {
    background-color: #ef4444 !important;
    border-color: #ef4444 !important;
}

.cert-placeholder {
    padding: 4rem;
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 32px;
    height: 32px;
    background-color: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: background-color var(--transition-fast);
}

.modal-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Modal Inner Content Specifics */
.modal-hero {
    width: 100%;
    height: 300px;
    object-fit: cover;
    background-color: var(--bg-alt);
}

.modal-details {
    padding: 2.5rem;
}

.modal-header {
    margin-bottom: 2rem;
}

.modal-title {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.modal-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.modal-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-body h3 {
    font-size: 1.25rem;
    margin: 2rem 0 1rem;
    color: var(--text-primary);
}

.modal-body p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.modal-body ul {
    list-style-type: disc;
    padding-left: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.modal-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.modal-gallery img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
    cursor: zoom-in;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.modal-gallery img:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-xl);
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(5, 5, 8, 0.95);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.lightbox.active {
    opacity: 1;
    pointer-events: all;
}

.lightbox-content {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.lightbox-img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.8);
    transform: scale(0.95);
    transition: transform var(--transition-base);
    user-select: none;
}

.lightbox.active .lightbox-img {
    transform: scale(1);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    border-radius: 50%;
    z-index: 2001;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #fff;
    transform: scale(1.1);
}

.lightbox-close {
    top: 2rem;
    right: 3rem;
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
}

.lightbox-prev,
.lightbox-next {
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    transform: translateY(-50%) scale(1.1);
}

.lightbox-prev {
    left: 3rem;
}

.lightbox-next {
    right: 3rem;
}

.lightbox-counter {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-secondary);
    font-size: 1rem;
    letter-spacing: 2px;
    font-variant-numeric: tabular-nums;
    z-index: 2001;
}

.modal-actions {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 1rem;
}

/* --- Unified Projects Hub Refinements --- */
.projects-controls {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 3rem;
    align-items: center;
}

/* 1. View Modes (Pills) */
.view-modes-wrapper {
    background-color: var(--bg-surface);
    padding: 0.4rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.view-modes {
    display: flex;
    gap: 0.25rem;
}

.view-btn {
    background: transparent;
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.view-btn i {
    font-size: 0.85rem;
    opacity: 0.7;
}

.view-btn:hover {
    color: var(--text-primary);
}

.view-btn.active {
    background-color: var(--accent-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.view-btn.active i {
    opacity: 1;
}

.view-btn.active i {
    opacity: 1;
}

/* Secondary Layout Switcher Styles */
.layout-toggle-wrapper {
    margin-top: 0.5rem;
}

.layout-toggle {
    display: flex;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.03);
    padding: 3px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.layout-btn {
    background: transparent;
    border: none;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.layout-btn i {
    font-size: 1rem;
}

.layout-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.layout-btn.active {
    background: var(--bg-surface-hover);
    color: var(--accent-primary);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.2);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

@keyframes slideDownFade {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Project Filters area (Search + Categories) --- */
.projects-filters-area {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
    margin: 2rem 0;
    animation: slideDownFade 0.4s ease forwards;
    align-items: center;
}

.projects-search-wrapper {
    width: 100%;
    display: flex;
    justify-content: center;
}

.search-bar-premium {
    position: relative;
    width: 100%;
    max-width: 420px;
    transition: all 0.3s ease;
}

.search-bar-premium i {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

.search-bar-premium input {
    width: 100%;
    padding: 0.8rem 1.5rem 0.8rem 3rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.search-bar-premium input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1), var(--shadow-md);
    max-width: 480px;
}

/* --- Project List View (Board/One-by-One) --- */
.projects-grid.list-view {
    grid-template-columns: 1fr !important; /* Force single column on ALL devices */
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    gap: 2rem;
}

.projects-grid.list-view .project-card {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 2rem;
    text-align: left;
}

.projects-grid.list-view .project-img-wrapper {
    flex: 0 0 40%;
    height: 250px;
}

@media (max-width: 768px) {
    .projects-grid.list-view .project-card {
        flex-direction: column; /* Stack vertically on mobile but keep single column */
        gap: 1rem;
    }
    
    .projects-grid.list-view .project-img-wrapper {
        flex: none;
        width: 100%;
        height: 200px;
    }
}

/* Category Scroller with Buttons */
.projects-categories-wrapper {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    padding: 0 40px;
    /* Space for buttons */
}

.projects-categories {
    display: flex;
    gap: 0.75rem;
    overflow-x: auto;
    scroll-behavior: smooth;
    padding: 0.5rem 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
    width: 100%;
}

.projects-categories::-webkit-scrollbar {
    display: none;
}

.scroll-btn {
    position: absolute;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.scroll-btn:hover {
    background-color: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: scale(1.1);
}

.scroll-btn.prev {
    left: 0;
}

.scroll-btn.next {
    right: 0;
}

.cat-btn {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    font-size: 0.85rem;
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--transition-fast);
    /* Ensure the 'All' card doesn't shrink or get lost */
    flex-shrink: 0;
}

.cat-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.cat-btn.active {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background-color: rgba(59, 130, 246, 0.05);
    font-weight: 600;
}

/* Responsive Hub */
@media (max-width: 768px) {
    .projects-filters-area {
        gap: 1.25rem;
        margin: 1.5rem 0;
    }

    .projects-categories-wrapper {
        padding: 0;
        width: calc(100% + 2rem); /* Reach edges */
        margin-left: -1rem;
        margin-right: -1rem;
    }

    .scroll-btn {
        display: none;
        /* Hide buttons on mobile, use native scroll */
    }

    .projects-categories {
        padding: 0.5rem 1rem;
        -webkit-overflow-scrolling: touch;
    }

    .search-bar-premium {
        max-width: 100%;
    }

    .search-bar-premium input {
        border-radius: 12px; /* Less rounded for more space on mobile search */
        font-size: 0.9rem;
    }

    .search-bar-premium input:focus {
        max-width: 100%;
    }

    /* FIX: Prevent iOS Safari from auto-zooming when focusing inputs */
    .search-bar-premium input,
    .form-group input,
    .form-group textarea,
    .form-group select {
        font-size: 16px !important; /* Minimum size to block auto-zoom */
    }
}

/* --- Premium Animation System --- */

/* Base Reveal State */
.reveal {
    opacity: 0;
    transform: translateY(30px) scale(0.9);
    filter: blur(10px);
    transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1),
                transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1),
                filter 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
    will-change: opacity, transform, filter;
}

.reveal.appear,
.reveal.reveal-active {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
}

/* Staggering Utilities (Applied via JS or CSS classes) */
.stagger-1 { transition-delay: 0.15s !important; }
.stagger-2 { transition-delay: 0.3s !important; }
.stagger-3 { transition-delay: 0.45s !important; }
.stagger-4 { transition-delay: 0.6s !important; }
.stagger-5 { transition-delay: 0.75s !important; }

/* FIX: Absolute Hover Priority (Must be after staggers to override the delay) */
.reveal.reveal-active:hover,
.reveal.appear:hover {
    transition-delay: 0s !important;
    transition-duration: 0.22s !important; /* Force snappy speed on hover */
}

/* Desktop-specific Left-to-Right Reveal */
@media (min-width: 1024px) {
    .process-step.reveal {
        transform: translateX(-30px) scale(0.95);
    }
    .process-step.reveal.reveal-active {
        transform: translateX(0) scale(1);
    }
}

/* Transitions for reveal handled by .reveal system above */

/* Mobile Animation Adjustments */
@media (max-width: 768px) {
    .reveal {
        transform: translateY(20px) scale(0.92);
        filter: blur(8px);
        transition-duration: 0.7s;
    }

    .stagger-1,
    .stagger-2,
    .stagger-3,
    .stagger-4,
    .stagger-5 {
        transition-delay: 0.05s !important;
        /* Faster stagger on mobile */
    }
}

/* Refined Hover Effects */
.expertise-card,
.project-card,
.stat-card,
.cert-card,
.timeline-content {
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
}

.expertise-card:hover,
.project-card:hover,
.stat-card:hover,
.cert-card:hover,
.timeline-content:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.5);
    border-color: var(--accent-primary);
}

/* Responsive */
@media (max-width: 900px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-container {
        flex-direction: column-reverse;
        gap: 1.5rem;
        text-align: center;
        padding-top: 1rem;
    }

    .hero-highlights {
        display: none !important; /* Remove redundant / space-consuming tags on mobile */
    }

    .cta-group {
        display: flex !important;
        flex-direction: row !important; /* Force Horizontal */
        flex-wrap: nowrap !important; /* No two-line splitting */
        justify-content: center;
        gap: 0.5rem !important;
        width: 100%;
        margin-top: 1.5rem;
    }

    .cta-group .btn {
        flex: 1; /* Equal width buttons */
        padding: 0.75rem 0.25rem !important; /* Thinner padding to fit row */
        font-size: 0.75rem !important; /* Smaller text for single-row safety */
        white-space: nowrap;
        min-width: 0;
        letter-spacing: 0;
        text-transform: capitalize; /* Shorter than uppercase usually */
    }

    .hero-image img {
        max-width: 250px;
        transform: rotate(0deg);
        margin-bottom: 2rem;
    }

    .hero-subtitle {
        margin: 0 auto 1.5rem auto;
        font-size: 1rem;
    }

    /* .hero-highlights already hidden above */
    
    .metrics-strip {
        padding: 1.5rem 0;
        margin-top: 2rem;
    }

    .section {
        padding-top: 4rem;
        padding-bottom: 4rem;
    }

    .timeline::before {
        left: 15px;
    }

    .timeline-dot {
        left: 8px;
    }

    .projects-grid {
        /* grid-template-columns: 1fr; -- PREVIOUS SINGLE COLUMN */
        grid-template-columns: 1fr 1fr; /* NEW HIGH-DENSITY 2-COLUMN */
        gap: 1rem;
    }

    .project-card .project-content {
        padding: 1rem;
    }

    .project-card .project-title {
        font-size: 1rem;
    }

    .certifications-grid {
        grid-template-columns: 1fr 1fr; /* 2x2 for Certifications as requested */
        gap: 1rem;
    }

    .cert-card {
        flex-direction: column !important;
        justify-content: center;
        text-align: center;
        padding: 1.5rem 0.5rem;
        gap: 1rem;
    }

    .education-grid {
        grid-template-columns: 1fr; /* 1x1 for Education to maintain text clarity */
        gap: 1.5rem;
    }

    .expertise-grid {
        grid-template-columns: 1fr 1fr; /* Reverted to 2x2 as requested */
        gap: 1rem;
    }

    .expertise-card {
        padding: 1.25rem;
        text-align: center;
    }

    .expertise-icon {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .lightbox-prev,
    .lightbox-next {
        display: none !important;
    }

    /* Prevent iOS auto-zoom on inputs */
    input[type="text"],
    input[type="email"],
    textarea,
    select {
        font-size: 16px !important;
    }

    .timeline-item {
        padding-left: 45px;
    }

}

/* --- Catchy Interactive Enhancements --- */

/* 1. Background Glows (Parallax) */
.bg-glow {
    position: fixed;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(59, 130, 246, 0) 70%);
    filter: blur(100px);
    z-index: -2;
    pointer-events: none;
    transition: transform 0.2s ease-out;
}

#glow-1 {
    top: -10%;
    left: -10%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
}

#glow-2 {
    bottom: -10%;
    right: -10%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, transparent 70%);
}

#glow-3 {
    top: 40%;
    left: 30%;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
}

/* 2. Hero Title Gradient Sweep */
.highlight {
    position: relative;
    display: inline-block;
    /* Crucial for clipping to work on spans in Safari */
    background-image: linear-gradient(90deg, var(--accent-primary), #60a5fa, var(--accent-primary));
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    /* Fallback for Safari */
    animation: gradientSweep 4s linear infinite;
    -webkit-box-decoration-break: clone;
    box-decoration-break: clone;
}

@keyframes gradientSweep {
    0% {
        background-position: 0% center;
    }

    100% {
        background-position: 200% center;
    }
}

/* 3. Pulsing Button Glow */
.btn-primary {
    position: relative;
    overflow: hidden;
    opacity: 1 !important; /* Force visibility for critical CTA */
    transform: none !important; /* Force stability for clickability */
    filter: none !important;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:active {
    transform: scale(0.96);
}

/* 4. Responsive Adjustments for Catchy Effects */
@media (max-width: 768px) {
    .bg-glow {
        display: none;
        /* Avoid performance issues on low-end mobile */
    }

    .highlight {
        animation-duration: 6s;
        /* Slower animation for less distraction */
    }
}

/* --- UX & CONVERSION UPGRADES --- */

/* 1. Metrics Strip */
.metrics-strip {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
    margin-top: -1px;
    /* Overlap slightly for cleaner border look */
}

.metrics-container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
}

.metric-item {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.metric-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--accent-primary);
    font-family: var(--font-heading);
}

.metric-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 2. Problem Recognition */
.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.problem-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 16px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    border-top: 3px solid transparent;
}

.problem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #ef4444, #f97316);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.problem-card:hover {
    border-color: rgba(239, 68, 68, 0.2);
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px -15px rgba(239, 68, 68, 0.15);
}

.problem-card:hover::before {
    opacity: 1;
}

.problem-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.12), rgba(249, 115, 22, 0.08));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #ef4444;
    margin-bottom: 1.5rem;
    transition: all var(--transition-base);
}

.problem-card:hover .problem-icon {
    background: linear-gradient(135deg, #ef4444, #f97316);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 8px 20px -5px rgba(239, 68, 68, 0.4);
}

.problem-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.problem-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* 3. Process Section (Roadmap) */
.process-roadmap {
    position: relative;
    display: flex;
    justify-content: space-between;
    gap: 1.5rem;
    margin-top: 4rem;
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-icon-wrapper {
    width: 60px;
    height: 60px;
    background-color: var(--bg-alt); /* Solid color to completely hide the line behind */
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--accent-primary);
    font-size: 1.25rem;
    transition: all var(--transition-base);
}

.process-step:hover .step-icon-wrapper {
    background-color: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.process-step h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.process-step p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Connector Line (Desktop Only) */
@media (min-width: 1024px) {
    .process-roadmap::before {
        content: '';
        position: absolute;
        top: 30px;
        left: 50px;
        width: 0; /* Animated with clip or width */
        height: 2px;
        background: repeating-linear-gradient(90deg, var(--accent-primary), var(--accent-primary) 10px, transparent 10px, transparent 20px);
        z-index: 0;
        transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
        transition-delay: 0.3s;
        opacity: 0.6; /* Slightly subtle but much more visible than before */
    }
    
    /* When the parent section is revealed, animate the line */
    #process.reveal-active .process-roadmap::before {
        width: calc(100% - 100px);
    }
}

/* 4. FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 3rem auto 0;
}

.faq-item {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all var(--transition-base);
    border-left: 3px solid transparent;
}

.faq-item:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-surface-hover);
}

.faq-item.active {
    border-left-color: var(--accent-primary);
    border-color: rgba(59, 130, 246, 0.2);
    box-shadow: 0 8px 25px -10px rgba(59, 130, 246, 0.15);
}

.faq-question {
    width: 100%;
    padding: 1.5rem 1.75rem;
    background: transparent;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    text-align: left;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.05rem;
    font-family: var(--font-body);
    transition: color var(--transition-fast);
    gap: 1rem;
}

.faq-item.active .faq-question {
    color: var(--accent-primary);
}

.faq-question:hover {
    color: var(--text-primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
        padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0 1.75rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: 1.75rem;
}

.faq-icon {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--accent-primary);
    flex-shrink: 0;
    font-size: 0.9rem;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

/* 7. Responsive Adjustments (Extended) */
@media (max-width: 768px) {
    .metrics-container {
        gap: 1.5rem;
    }

    .metric-item {
        flex: 1 1 40%;
    }

    /* PREMIUM MOBILE TIMELINE REBUILD */
    .process-roadmap {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 1.5rem;
        gap: 1.5rem; /* Reduced space to see more phases at once */
    }

    .process-roadmap::before {
        content: '';
        position: absolute;
        top: 0;
        bottom: 0;
        left: calc(1.5rem + 27px); /* Perfectly aligns with center of 56px icon after 1.5rem padding */
        width: 2px;
        height: 0; /* Vertical loading animation */
        background: repeating-linear-gradient(0deg, var(--accent-primary), var(--accent-primary) 10px, transparent 10px, transparent 20px);
        z-index: 0;
        transition: height 1.8s cubic-bezier(0.4, 0, 0.2, 1);
        transition-delay: 0.4s;
        opacity: 0.6;
    }

    #process.reveal-active .process-roadmap::before {
        height: 100%;
    }

    .process-step {
        width: 100%;
        display: flex;
        flex-direction: row;
        align-items: center; /* Vertically center icon with the entire text block */
        gap: 1.5rem;
        text-align: left;
    }

    .step-icon-wrapper {
        margin: 0;
        flex-shrink: 0;
        z-index: 2;
        background-color: var(--bg-alt) !important; /* Solid to match desktop fix */
        width: 56px; /* Slightly smaller for mobile precision */
        height: 56px;
    }

    .step-content {
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .process-step h4 {
        margin: 0; 
        line-height: 1.2; /* Removed 56px forced alignment for proper centering */
        font-size: 1.15rem;
        white-space: normal; /* Better wrapping on small screens */
    }

    .process-step p {
        margin-top: 0.35rem; 
        font-size: 0.95rem;
        line-height: 1.5;
        color: var(--text-secondary);
        margin-bottom: 0;
    }

    .bg-glow {
        display: none;
    }
}

/* =========================================================================
   PREMIUM ANIMATION & INTERACTION SYSTEM
   ========================================================================= */

/* 1. Scroll Progress Indicator */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, #3b82f6, #60a5fa, #10b981, #3b82f6);
    background-size: 300% 100%;
    z-index: 9999;
    transition: width 0.05s linear;
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.6), 0 0 4px rgba(59, 130, 246, 0.3);
    animation: progressGradient 3s ease infinite;
}

@keyframes progressGradient {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* 2. Hero Image Float Animation */
@keyframes heroFloat {

    0%,
    100% {
        transform: rotate(3deg) translateY(0px);
    }

    50% {
        transform: rotate(3deg) translateY(-18px);
    }
}

.hero-animate .hero-image img {
    animation: heroFloat 6s ease-in-out infinite;
}

.hero-animate .hero-image:hover img {
    animation: none;
    transform: rotate(0deg) scale(1.04);
}

/* 3. Hero Image Glow Pulse */
@keyframes heroGlowPulse {

    0%,
    100% {
        box-shadow: var(--shadow-lg), 0 0 40px rgba(59, 130, 246, 0.1);
    }

    50% {
        box-shadow: var(--shadow-lg), 0 0 60px rgba(59, 130, 246, 0.25), 0 0 120px rgba(59, 130, 246, 0.08);
    }
}

.hero-animate .hero-image img {
    animation: heroFloat 6s ease-in-out infinite, heroGlowPulse 4s ease-in-out infinite;
}

/* 4. Timeline Dot Pulse */
@keyframes timelinePulse {
    0% {
        box-shadow: 0 0 0 2px var(--accent-primary-hover), 0 0 0 0 rgba(59, 130, 246, 0.4);
    }

    70% {
        box-shadow: 0 0 0 2px var(--accent-primary-hover), 0 0 0 12px rgba(59, 130, 246, 0);
    }

    100% {
        box-shadow: 0 0 0 2px var(--accent-primary-hover), 0 0 0 0 rgba(59, 130, 246, 0);
    }
}

.timeline-dot {
    animation: timelinePulse 2.5s ease-in-out infinite;
}

/* --- Infinite Tech Ticker (Marquee) --- */
.tech-marquee-wrapper {
    width: 100%;
    background: var(--glass-bg);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
    overflow: hidden;
    margin-top: 0; /* Removed overlap */
    position: relative;
    z-index: 5;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.marquee-content {
    display: flex;
    gap: 4rem;
    white-space: nowrap;
    animation: scrollMarquee 30s linear infinite;
    width: max-content;
}

.marquee-content span {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    opacity: 0.7;
    transition: all 0.3s ease;
    flex-shrink: 0; /* Locked width for seamlessness */
}

.marquee-content span i {
    color: var(--accent-primary);
    font-size: 1.25rem;
    filter: drop-shadow(0 0 5px rgba(59, 130, 246, 0.5));
}

.marquee-content span:hover {
    opacity: 1;
    color: var(--text-primary);
    transform: scale(1.05);
}

@keyframes scrollMarquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-33.3333%); }
}

@media (max-width: 768px) {
    .tech-marquee-wrapper {
        padding: 1rem 0;
        margin-top: 0;
    }
    .marquee-content {
        gap: 2.5rem;
    }
    .marquee-content span {
        font-size: 0.95rem;
    }
}

/* 5. Button Ripple Effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    transform: scale(0);
    animation: rippleAnim 0.6s linear;
    pointer-events: none;
}

@keyframes rippleAnim {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 6. Animated Gradient Border on Card Hover */
.project-card,
.expertise-card {
    position: relative;
}

.project-card::after,
.expertise-card::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 12px;
    padding: 1px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-primary));
    background-size: 200% 200%;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
    z-index: 1;
    animation: gradientRotate 3s ease infinite;
}

@keyframes gradientRotate {
    0% {
        background-position: 0% 0%;
    }

    50% {
        background-position: 100% 100%;
    }

    100% {
        background-position: 0% 0%;
    }
}

.project-card:hover::after,
.expertise-card:hover::after {
    opacity: 1;
}

/* 7. Animated Divider */
@keyframes dividerGlow {

    0%,
    100% {
        width: 60px;
        opacity: 0.7;
    }

    50% {
        width: 90px;
        opacity: 1;
    }
}

.divider {
    animation: dividerGlow 3s ease-in-out infinite;
}

/* 8. Stat Number Hover Pop */
.stat-number {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.3s ease;
    display: block;
}

.stat-card:hover .stat-number {
    transform: scale(1.15);
}

/* 9. Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), #2563eb);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.8);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.back-to-top:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

.back-to-top:active {
    transform: translateY(-2px) scale(0.95);
}

/* 10. Navbar Link Hover Glow */
.nav-link:hover {
    text-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

/* 11. Footer Social Hover Pop */
.social-link:hover {
    transform: translateY(-4px) rotate(5deg);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

/* 12. Enhanced Card Hover Interactions */
.expertise-card:hover .expertise-icon {
    transform: scale(1.15) rotate(-5deg);
    transition: transform 0.35s cubic-bezier(0.23, 1, 0.32, 1);
}

.expertise-icon {
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 13. Process Step Enhanced Hover */
.process-step:hover h4 {
    color: var(--accent-primary);
    transition: color 0.3s ease;
}

.process-step {
    cursor: default;
    user-select: none;
}

.process-step p, .process-step h4 {
    cursor: default;
}

.process-step:hover .step-icon-wrapper {
    transform: scale(1.05); /* Subtle, not 'button-like' */
    box-shadow: var(--shadow-glow);
}

/* 14. Cert Card Shimmer on Hover */
.cert-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.04), transparent);
    transition: left 0.6s ease;
    pointer-events: none;
}

.cert-card {
    position: relative;
    overflow: hidden;
}

.cert-card:hover::before {
    left: 100%;
}

/* 15. Timeline Content Enhanced Hover */
.timeline-content:hover {
    transform: translateX(8px);
    box-shadow: -4px 0 0 var(--accent-primary), var(--shadow-md);
}

/* 16. Contact Form Input Focus Glow */
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12), 0 4px 12px rgba(59, 130, 246, 0.08);
    border-color: var(--accent-primary);
}

/* 17. Metric Value Counter Animation */
.metric-value {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.metric-item:hover .metric-value {
    transform: scale(1.12);
}

/* 18. Section Header Underline Reveal */
.section-header h2 {
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.section-header:hover h2::after {
    width: 100%;
    left: 0;
}

/* 19. Problem Card Number Badge */
.problem-card {
    counter-increment: problem-counter;
}

.problem-grid {
    counter-reset: problem-counter;
}

.problem-card::after {
    content: counter(problem-counter, decimal-leading-zero);
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    font-size: 3rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: rgba(255, 255, 255, 0.03);
    line-height: 1;
    pointer-events: none;
}

.problem-card:hover::after {
    color: rgba(239, 68, 68, 0.08);
    transition: color 0.3s ease;
}

/* 20. Premium Reveal System - Global */
.reveal {
    opacity: 0;
    transform: translateY(30px) scale(0.98);
    transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1),
                transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
    will-change: opacity, transform;
}

.reveal.reveal-active {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Fallback - ensures visibility if JS is restricted */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* --- 21. Premium Card Shimmer Effect --- */
.project-card,
.cert-card,
.education-card,
.expertise-card {
    position: relative;
    overflow: hidden;
}

.cert-card::after,
.expertise-card::after,
.education-card::after {
    content: "";
    position: absolute;
    top: -50%;
    left: -150%;
    width: 100%;
    height: 200%;
    background: linear-gradient(
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    transform: rotate(25deg);
    transition: left 0.35s cubic-bezier(0.23, 1, 0.32, 1);
    pointer-events: none;
    z-index: 5;
}

.cert-card:hover::after,
.expertise-card:hover::after,
.education-card:hover::after {
    left: 150%;
}

/* --- 22. Advanced Rendering & Mobile Polish --- */
.section {
    /* Prevent height drift by ensuring all sections are part of the initial layout calculation */
    content-visibility: visible; 
    /* Native buffer for anchor navigation - accounts for 80px navbar + 20px breathing room */
    scroll-margin-top: 100px;
}

.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.8);
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    border: none;
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.4);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.scroll-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    background-color: var(--accent-hover);
    box-shadow: 0 15px 30px var(--shadow-glow);
}

@media (max-width: 768px) {
    .scroll-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 44px;
        height: 44px;
    }
}


.modal-nav { display: flex; gap: 1.5rem; padding: 0 0 0.5rem 0; justify-content: flex-start; background: transparent; position: relative; border-bottom: 1px solid var(--border-color); width: 100%; overflow-x: auto; } .modal-nav-link { font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); padding: 0.5rem 0.25rem 0.75rem; background: transparent; border: none; border-bottom: 3px solid transparent; cursor: pointer; text-decoration: none !important; transition: all 0.2s ease; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: -1px; white-space: nowrap; } .modal-nav-link:hover { color: var(--text-primary); border-bottom-color: var(--border-hover); } .modal-nav-link.active { color: var(--accent-primary); border-bottom-color: var(--accent-primary); } .modal-section { padding-top: 1rem; scroll-margin-top: 8rem; } .modal-body h3 { font-size: 1.35rem; margin-top: 1.5rem; border-left: 3px solid var(--accent-primary); padding-left: 0.8rem; } .modal-body p { font-size: 1.05rem; line-height: 1.7; color: var(--text-secondary); }

/* --- Premium Pagination Styles --- */ .projects-pagination-premium { display: flex; justify-content: space-between; align-items: center; margin-top: 3rem; padding: 1.2rem 2rem; background: rgba(255, 255, 255, 0.03); border-radius: 12px; border: 1px solid var(--border-color); flex-wrap: wrap; gap: 1.5rem; } .pagination-limit-wrapper { display: flex; align-items: center; gap: 0.8rem; } .limit-label { font-size: 0.85rem; color: var(--text-secondary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; } .limit-select-container { position: relative; } .limit-select { appearance: none; background: var(--bg-surface); border: 1px solid var(--border-color); color: var(--text-primary); padding: 0.45rem 2.2rem 0.45rem 1rem; border-radius: 10px; font-size: 0.9rem; font-weight: 600; cursor: pointer; transition: all 0.3s ease; min-width: 85px; outline: none; } .limit-select:hover { border-color: var(--accent-primary); background: var(--bg-surface-hover); box-shadow: 0 0 15px rgba(59, 130, 246, 0.15); } .select-icon { position: absolute; right: 0.85rem; top: 50%; transform: translateY(-50%); font-size: 0.7rem; color: var(--accent-primary); pointer-events: none; } .pagination-pages { display: flex; align-items: center; gap: 0.4rem; } .page-btn { width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; border-radius: 50%; background: transparent; border: 1px solid transparent; color: var(--text-secondary); cursor: pointer; transition: all 0.2s ease; font-weight: 700; font-size: 0.9rem; } .page-btn.active { background: var(--accent-primary); color: white; box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3); } .page-btn.nav { background: rgba(255, 255, 255, 0.04); color: var(--text-primary); } .page-btn.nav:hover { background: var(--accent-primary); color: white; }

/* Responsive Mobile Pagination */
@media (max-width: 768px) {
    .projects-pagination-premium {
        flex-wrap: nowrap !important;
        padding: 0.75rem 1rem !important;
        gap: 0.5rem;
    }
    .limit-label {
        display: none !important; /* Hide label to save space */
    }
    .pagination-limit-wrapper {
        margin-bottom: 0 !important;
    }
    .pagination-pages {
        margin-left: auto !important; /* Push navigation to the right */
        gap: 0.25rem !important; /* Tighter gap */
    }
    .page-btn {
        width: 32px !important;
        height: 32px !important;
        min-width: 32px !important;
        font-size: 0.85rem !important;
    }

    /* Mobile Problem Grid Horizontal Carousel */
    .problem-grid {
        display: flex !important;
        overflow-x: auto !important;
        overflow-y: hidden !important; /* Strictly prevent vertical scrolling */
        scroll-snap-type: x mandatory;
        gap: 1rem !important;
        padding-top: 1.5rem; /* Room for card lift */
        padding-bottom: 2.5rem; /* Extra room for deep shadows */
        -webkit-overflow-scrolling: touch;
        margin-left: -1.5rem; /* Break out of container constraints */
        margin-right: -1.5rem;
        padding-left: 1.5rem; /* Inner padding keeps first item aligned */
        padding-right: 1.5rem;
        scrollbar-width: none; /* Firefox */
    }
    .problem-grid::-webkit-scrollbar {
        display: none; /* Chrome */
    }
    .problem-card {
        flex: 0 0 85% !important; /* Forces cards to line up horizontally and allow the next to peek */
        scroll-snap-align: center;
        min-width: 280px;
        margin-bottom: 0 !important;
        transition: all 0.3s ease;
    }
    
    .problem-card.mobile-active {
        transform: translateY(-10px) scale(1.02); /* Matches PC hover lift */
        box-shadow: 0 15px 35px rgba(239, 68, 68, 0.2); 
        border-color: rgba(239, 68, 68, 0.3);
    }
    
    .problem-card.mobile-active::before {
        opacity: 1; /* Shows the top red line line on swipe */
    }

    .problem-card.mobile-active .problem-icon {
        background: linear-gradient(135deg, #ef4444, #f97316);
        color: white;
        box-shadow: 0 0 15px rgba(239, 68, 68, 0.5);
    }

    .booking-benefits {
        display: none !important;
    }

    .mobile-carousel-dots {
        display: flex;
        justify-content: center;
        gap: 0.5rem;
        margin-top: -0.5rem;
        margin-bottom: 2.5rem;
    }

    .mobile-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--border-color);
        transition: all 0.3s ease;
    }

    .mobile-dot.active {
        background: var(--accent-primary);
        transform: scale(1.3);
    }
    
    /* Fix Certificate & Education Modal Gap */
    .cert-modal-content {
        height: auto !important;
        min-height: 50vh;
    }
}

/* FINAL ATOMIC FIX FOR MOBILE SOLIDITY & THEME CONSISTENCY */
@media (max-width: 768px) {
    /* Dark Theme */
    body.dark-theme .navbar,
    body.dark-theme .navbar.scrolled,
    body.dark-theme .mobile-nav,
    body.dark-theme .navbar.mobile-menu-open {
        background-color: #000000 !important;
        background: #000000 !important;
        background-image: none !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        opacity: 1 !important;
        visibility: visible !important;
    }

    /* Light Theme */
    body.light-theme .navbar,
    body.light-theme .navbar.scrolled,
    body.light-theme .mobile-nav,
    body.light-theme .navbar.mobile-menu-open {
        background-color: #ffffff !important;
        background: #ffffff !important;
        background-image: none !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        opacity: 1 !important;
        visibility: visible !important;
    }
}