/* ==================== CSS RESET & VARIABLES ==================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary palette - deep green/teal for waste management theme */
    --primary-50: #e6f7f1;
    --primary-100: #b3e8d4;
    --primary-200: #80d9b7;
    --primary-300: #4dca9a;
    --primary-400: #26be83;
    --primary-500: #0fa86c;
    --primary-600: #0d9460;
    --primary-700: #0a7a4f;
    --primary-800: #08613e;
    --primary-900: #044a2e;

    /* Accent - warm amber/gold */
    --accent-400: #f5a623;
    --accent-500: #e8961a;
    --accent-600: #d4870f;

    /* Neutrals */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --gray-950: #020617;

    /* Semantic */
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #10b981;
    --info: #3b82f6;

    /* Surface */
    --bg-primary: #0a0f1a;
    --bg-secondary: #0f1629;
    --bg-card: rgba(15, 22, 41, 0.8);
    --bg-card-hover: rgba(20, 30, 55, 0.9);
    --bg-glass: rgba(15, 22, 41, 0.6);

    /* Text */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Borders */
    --border-color: rgba(148, 163, 184, 0.1);
    --border-glow: rgba(15, 168, 108, 0.3);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0fa86c, #0d9460, #0a7a4f);
    --gradient-accent: linear-gradient(135deg, #f5a623, #e8961a);
    --gradient-hero: linear-gradient(135deg, #0a0f1a 0%, #0f1629 40%, #0d1a2d 70%, #0a1a24 100%);
    --gradient-card: linear-gradient(145deg, rgba(15, 22, 41, 0.9), rgba(10, 15, 26, 0.95));

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(15, 168, 108, 0.15);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --section-py: 100px;
    --container-max: 1200px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

ul { list-style: none; }

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

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==================== NAVBAR ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition-base);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 15, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: white;
    box-shadow: var(--shadow-glow);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.logo-sub {
    font-size: 11px;
    font-weight: 500;
    color: var(--primary-400);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-400);
    background: rgba(15, 168, 108, 0.08);
}

/* Dropdown */
.nav-dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
}

.dropdown-toggle i {
    font-size: 10px;
    transition: var(--transition-base);
}

.nav-dropdown:hover .dropdown-toggle i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background: rgba(15, 22, 41, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(4px);
}

.dropdown-menu li a {
    display: block;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.dropdown-menu li a:hover {
    color: var(--primary-400);
    background: rgba(15, 168, 108, 0.1);
    padding-left: 22px;
}

/* Milestone dates shown under each name */
.dropdown-menu li a small {
    display: block;
    margin-top: 2px;
    font-size: 11px;
    font-weight: 400;
    color: var(--text-muted);
}

/* Mobile toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-base);
}

/* ==================== HERO ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: var(--gradient-hero);
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 600px 600px at 20% 50%, rgba(15, 168, 108, 0.08), transparent),
        radial-gradient(ellipse 400px 400px at 80% 30%, rgba(59, 130, 246, 0.06), transparent),
        radial-gradient(ellipse 500px 500px at 60% 80%, rgba(245, 166, 35, 0.04), transparent);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(15, 168, 108, 0.1);
    border: 1px solid rgba(15, 168, 108, 0.2);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-400);
    margin-bottom: 28px;
    animation: fadeInDown 0.8s ease forwards;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text-primary);
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.gradient-text {
    background: linear-gradient(135deg, #0fa86c, #26be83, #4dca9a, #f5a623);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 4s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    max-width: 700px;
    margin: 0 auto 40px;
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-bottom: 44px;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-400);
    line-height: 1.2;
}

.stat-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    animation: fadeInUp 0.8s ease 0.8s forwards;
    opacity: 0;
}

.hero-visual {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    box-shadow: var(--shadow-md);
    animation: float 6s ease-in-out infinite;
}

.floating-card i {
    font-size: 18px;
    color: var(--primary-400);
}

.card-1 { top: 18%; left: 5%; animation-delay: 0s; }
.card-2 { top: 25%; right: 5%; animation-delay: 1.5s; }
.card-3 { bottom: 28%; left: 8%; animation-delay: 3s; }
.card-4 { bottom: 20%; right: 8%; animation-delay: 4.5s; }

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-16px); }
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 12px;
    z-index: 2;
    animation: fadeInUp 1s ease 1.2s forwards;
    opacity: 0;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary-400);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s ease infinite;
}

@keyframes scrollWheel {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 16px rgba(15, 168, 108, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(15, 168, 108, 0.4);
}

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

.btn-outline:hover {
    background: rgba(15, 168, 108, 0.08);
    border-color: var(--primary-500);
    color: var(--primary-400);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ==================== SECTIONS ==================== */
.section {
    padding: var(--section-py) 0;
    position: relative;
}

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

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(15, 168, 108, 0.1);
    border: 1px solid rgba(15, 168, 108, 0.15);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-400);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.section-divider {
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
    margin: 0 auto 16px;
}

.section-desc {
    max-width: 600px;
    margin: 0 auto;
    color: var(--text-secondary);
    font-size: 15px;
}

/* ==================== LITERATURE REVIEW ==================== */
.lit-review-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.lit-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-base);
}

.lit-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.lit-card-icon {
    width: 52px;
    height: 52px;
    background: rgba(15, 168, 108, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--primary-400);
    margin-bottom: 20px;
}

.lit-card h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.lit-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
}

/* ==================== RESEARCH GAP ==================== */
.gap-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.gap-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-base);
}

.gap-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.gap-number {
    font-family: var(--font-display);
    font-size: 72px;
    font-weight: 800;
    color: rgba(15, 168, 108, 0.06);
    position: absolute;
    top: -8px;
    right: 16px;
    line-height: 1;
}

.gap-card h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.gap-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 16px;
}

.gap-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(15, 168, 108, 0.1);
    border: 1px solid rgba(15, 168, 108, 0.2);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-400);
}

/* ==================== PROBLEM & SOLUTION ==================== */
.problem-solution {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.problem-box,
.solution-box {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: var(--transition-base);
}

.problem-box:hover,
.solution-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.problem-box {
    border-top: 3px solid var(--danger);
}

.solution-box {
    border-top: 3px solid var(--success);
}

.ps-icon {
    font-size: 36px;
    margin-bottom: 20px;
}

.problem-box .ps-icon { color: var(--danger); }
.solution-box .ps-icon { color: var(--success); }

.problem-box h3,
.solution-box h3 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 14px;
}

.problem-box p,
.solution-box p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 16px;
}

.problem-box ul,
.solution-box ul {
    list-style: none;
    padding: 0;
}

.problem-box ul li,
.solution-box ul li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.problem-box ul li::before {
    content: '✕';
    position: absolute;
    left: 0;
    color: var(--danger);
    font-weight: 700;
    font-size: 12px;
}

.solution-box ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

/* ==================== OBJECTIVES ==================== */
.objectives-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.objective-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-base);
}

.objective-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.obj-icon {
    width: 52px;
    height: 52px;
    background: rgba(15, 168, 108, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--primary-400);
    margin-bottom: 16px;
}

.objective-card h4 {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.obj-member {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--primary-400);
    margin-bottom: 16px;
}

.objective-card ul {
    list-style: none;
    padding: 0;
}

.objective-card ul li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.objective-card ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-400);
    font-weight: 700;
}

/* ==================== METHODOLOGY ==================== */
.method-overview {
    max-width: 800px;
    margin: 0 auto 48px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
}

.method-timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.method-timeline::before {
    content: '';
    position: absolute;
    left: 28px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-500), var(--primary-800));
}

.method-step {
    display: flex;
    gap: 28px;
    margin-bottom: 36px;
    position: relative;
}

.step-marker {
    width: 56px;
    height: 56px;
    min-width: 56px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: white;
    z-index: 1;
    box-shadow: 0 0 20px rgba(15, 168, 108, 0.3);
}

.step-content {
    padding-top: 8px;
}

.step-content h4 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.step-content p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

/* ==================== TECHNOLOGIES ==================== */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.tech-category {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition-base);
}

.tech-category:hover {
    border-color: var(--border-glow);
}

.tech-category h3 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-400);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

/* Logo or icon on the left, name and description on the right */
.tech-item {
    display: grid;
    grid-template-columns: 28px auto;
    column-gap: 12px;
    align-items: center;
    padding: 10px 16px 10px 12px;
    background: rgba(15, 168, 108, 0.05);
    border: 1px solid rgba(15, 168, 108, 0.1);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.tech-item:hover {
    background: rgba(15, 168, 108, 0.1);
    border-color: rgba(15, 168, 108, 0.2);
}

.tech-icon {
    grid-row: span 2;
    width: 28px;
    height: 28px;
    object-fit: contain;
}

i.tech-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 7px;
    background: rgba(15, 168, 108, 0.12);
    color: var(--primary-400);
    font-size: 14px;
}

.tech-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.tech-desc {
    font-size: 11px;
    color: var(--text-muted);
}

/* ==================== ARCHITECTURE ==================== */
.architecture-diagram {
    max-width: 800px;
    margin: 0 auto;
}

.arch-layer {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 0;
}

.layer-title {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-400);
    text-transform: uppercase;
    letter-spacing: 1px;
    text-align: center;
    margin-bottom: 20px;
}

.arch-nodes {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.arch-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 28px;
    background: rgba(15, 168, 108, 0.06);
    border: 1px solid rgba(15, 168, 108, 0.15);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition-base);
    min-width: 180px;
}

.arch-node:hover {
    background: rgba(15, 168, 108, 0.1);
    transform: translateY(-2px);
}

.arch-node i {
    font-size: 28px;
    color: var(--primary-400);
}

.arch-node span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.arch-node small {
    font-size: 11px;
    color: var(--text-muted);
}

.arch-connector {
    color: var(--primary-500);
    font-size: 20px;
    opacity: 0.5;
}

.arch-arrow {
    text-align: center;
    padding: 8px 0;
    color: var(--primary-500);
    font-size: 24px;
    opacity: 0.5;
}

.node-iot { border-color: rgba(59, 130, 246, 0.2); }
.node-cloud { border-color: rgba(245, 166, 35, 0.2); }
.node-ml { border-color: rgba(168, 85, 247, 0.2); }
.node-app { border-color: rgba(15, 168, 108, 0.2); }

/* ==================== MILESTONES ==================== */
.milestone-timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

.milestone-timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-500), var(--primary-800), var(--gray-700));
}

.milestone-item {
    position: relative;
    margin-bottom: 20px;
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    scroll-margin-top: 100px;
}

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

.milestone-item:hover,
.milestone-item[open] {
    border-color: var(--border-glow);
}

.milestone-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    cursor: pointer;
    list-style: none;
}

.milestone-summary::-webkit-details-marker {
    display: none;
}

.milestone-summary:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
    border-radius: var(--radius-lg);
}

.milestone-dot {
    position: absolute;
    left: -34px;
    top: 26px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 3px solid var(--primary-500);
    background: var(--bg-primary);
    z-index: 1;
}

.milestone-item.completed .milestone-dot {
    background: var(--primary-500);
    box-shadow: 0 0 12px rgba(15, 168, 108, 0.4);
}

.milestone-item.current .milestone-dot {
    background: var(--accent-500);
    border-color: var(--accent-500);
    box-shadow: 0 0 12px rgba(245, 166, 35, 0.4);
    animation: pulse 2s ease infinite;
}

.milestone-item.upcoming .milestone-dot {
    border-color: var(--gray-600);
    background: var(--bg-primary);
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 12px rgba(245, 166, 35, 0.4); }
    50% { box-shadow: 0 0 24px rgba(245, 166, 35, 0.6); }
}

.milestone-head {
    display: flex;
    flex-direction: column;
}

.milestone-date {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-400);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.milestone-title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
}

.milestone-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.milestone-status {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    color: var(--primary-400);
    background: rgba(15, 168, 108, 0.1);
}

.milestone-item.current .milestone-status {
    color: var(--accent-400);
    background: rgba(245, 166, 35, 0.1);
}

.milestone-item.upcoming .milestone-status {
    color: var(--text-muted);
    background: rgba(148, 163, 184, 0.1);
}


.milestone-chevron {
    font-size: 12px;
    color: var(--text-muted);
    transition: transform var(--transition-base);
}

.milestone-item[open] .milestone-chevron {
    transform: rotate(180deg);
}

.milestone-body {
    padding: 0 24px 22px;
    border-top: 1px solid var(--border-color);
    padding-top: 18px;
}

.milestone-body > :last-child {
    margin-bottom: 0;
}

.milestone-body p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.milestone-list {
    margin: 0 0 14px 18px;
    list-style: disc;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
}

.milestone-note {
    display: flex;
    gap: 10px;
    padding: 12px 14px;
    margin-bottom: 14px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-secondary);
    background: rgba(59, 130, 246, 0.08);
    border-left: 3px solid var(--info);
    border-radius: var(--radius-sm);
}

.milestone-note i {
    color: var(--info);
    margin-top: 3px;
}

.milestone-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.milestone-links a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 500;
    color: var(--primary-400);
    background: rgba(15, 168, 108, 0.08);
    border: 1px solid rgba(15, 168, 108, 0.2);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.milestone-links a:hover {
    background: rgba(15, 168, 108, 0.16);
    border-color: var(--primary-500);
}



/* Official Timeline table */
.official-timeline {
    max-width: 700px;
    margin: 40px auto 0;
    padding: 24px;
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    scroll-margin-top: 100px;
}

.official-timeline-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.official-timeline-head > i {
    font-size: 20px;
    color: var(--primary-400);
    padding: 12px;
    background: rgba(15, 168, 108, 0.1);
    border-radius: var(--radius-md);
}

.official-timeline-head h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
}

.official-timeline-head small {
    font-size: 13px;
    color: var(--text-muted);
}

.table-wrap {
    overflow-x: auto;
}

.timeline-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.timeline-table th,
.timeline-table td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.timeline-table th {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.timeline-table td {
    color: var(--text-secondary);
}

.timeline-table td:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

.timeline-table td:nth-child(2) {
    white-space: nowrap;
}

.timeline-table tbody tr:last-child td {
    border-bottom: none;
}

.tl-status {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    white-space: nowrap;
    color: var(--primary-400);
    background: rgba(15, 168, 108, 0.1);
}

.tl-status.current {
    color: var(--accent-400);
    background: rgba(245, 166, 35, 0.1);
}

.tl-status.upcoming {
    color: var(--text-muted);
    background: rgba(148, 163, 184, 0.1);
}

@media (max-width: 576px) {
    .official-timeline {
        padding: 18px 14px;
    }

    .timeline-table th,
    .timeline-table td {
        padding: 10px 8px;
    }
}

@media (max-width: 576px) {
    .milestone-summary {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        padding: 16px 18px;
    }

    .milestone-body {
        padding: 16px 18px 18px;
    }
}

/* ==================== DOCUMENTS ==================== */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.doc-category {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-base);
}

.doc-category:hover {
    border-color: var(--border-glow);
}

.doc-category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    background: rgba(15, 168, 108, 0.05);
    border-bottom: 1px solid var(--border-color);
}

.doc-category-header i {
    font-size: 18px;
    color: var(--primary-400);
}

.doc-category-header h3 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
}

.doc-list {
    padding: 8px;
}

.doc-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
    cursor: pointer;
}

.doc-item:hover {
    background: rgba(15, 168, 108, 0.06);
}

.doc-item > i:first-child {
    font-size: 20px;
    color: #ef4444;
    min-width: 20px;
}

.doc-info {
    flex: 1;
}

.doc-name {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.doc-desc {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
}

.doc-download {
    font-size: 14px;
    color: var(--text-muted);
    transition: var(--transition-base);
}

.doc-item:hover .doc-download {
    color: var(--primary-400);
}

/* ==================== PRESENTATIONS ==================== */
.presentations-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.pres-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    text-align: center;
    transition: var(--transition-base);
    position: relative;
}

.pres-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.pres-icon {
    font-size: 32px;
    color: var(--primary-400);
    margin-bottom: 12px;
}

.pres-status {
    display: inline-block;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    margin-bottom: 12px;
}

.completed-tag {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.upcoming-tag {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.pres-card h3 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
}

.pres-card p {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
    margin-bottom: 16px;
}

.pres-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-400);
    transition: var(--transition-base);
}

.pres-link:hover {
    color: var(--primary-300);
}

.pres-link.disabled {
    color: var(--text-muted);
    pointer-events: none;
}

/* ==================== ABOUT US ==================== */
.sub-heading {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 32px;
}

.supervisors {
    margin-bottom: 60px;
}

.supervisor-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 700px;
    margin: 0 auto;
}

.supervisor-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    transition: var(--transition-base);
}

.supervisor-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.supervisor-avatar {
    width: 72px;
    height: 72px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
    margin: 0 auto 16px;
}

.supervisor-card h4 {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 4px;
}

.supervisor-role {
    display: inline-block;
    padding: 3px 12px;
    background: rgba(15, 168, 108, 0.1);
    border: 1px solid rgba(15, 168, 108, 0.2);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-400);
    margin-bottom: 10px;
}

.supervisor-card p {
    color: var(--text-secondary);
    font-size: 13px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.team-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 20px;
    text-align: center;
    transition: var(--transition-base);
}

.team-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
}

.team-avatar {
    margin-bottom: 16px;
}

.avatar-placeholder {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(15, 168, 108, 0.15), rgba(59, 130, 246, 0.1));
    border: 2px solid rgba(15, 168, 108, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--primary-400);
    margin: 0 auto;
}

.team-card h4 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.team-id {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--primary-400);
    margin-bottom: 10px;
}

.team-component {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 16px;
    min-height: 40px;
}

.team-links {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.team-links a {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--text-muted);
    transition: var(--transition-base);
}

.team-links a:hover {
    background: rgba(15, 168, 108, 0.1);
    border-color: var(--primary-500);
    color: var(--primary-400);
}

/* ==================== CONTACT ==================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-item > i {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: rgba(15, 168, 108, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--primary-400);
}

.contact-item h4 {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-item p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.contact-form-wrapper {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.form-group {
    position: relative;
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: rgba(15, 168, 108, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 14px;
    color: var(--text-primary);
    transition: var(--transition-base);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(15, 168, 108, 0.1);
}

.form-group label {
    display: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--gray-950);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
}

.footer-logo i {
    color: var(--primary-400);
    font-size: 22px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
    max-width: 350px;
}

.footer-links h4 {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: var(--text-secondary);
    font-size: 14px;
    transition: var(--transition-base);
}

.footer-links ul li a:hover {
    color: var(--primary-400);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 13px;
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .presentations-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .floating-card {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --section-py: 64px;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: rgba(10, 15, 26, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 80px 24px 24px;
        gap: 4px;
        transition: var(--transition-base);
        border-left: 1px solid var(--border-color);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: transparent;
        border: none;
        padding-left: 16px;
        box-shadow: none;
        display: none;
        backdrop-filter: none;
    }

    .nav-dropdown.open .dropdown-menu {
        display: block;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-stats {
        gap: 24px;
        flex-wrap: wrap;
    }

    .stat-number {
        font-size: 28px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .lit-review-content,
    .gap-grid,
    .problem-solution,
    .objectives-grid,
    .tech-grid,
    .docs-grid {
        grid-template-columns: 1fr;
    }

    .presentations-grid {
        grid-template-columns: 1fr;
    }

    .team-grid {
        grid-template-columns: 1fr;
    }

    .supervisor-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .arch-nodes {
        flex-direction: column;
    }

    .arch-connector {
        transform: rotate(90deg);
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .section-title {
        font-size: 1.5rem;
    }
}

/* ==================== PARTICLE DOTS ==================== */
.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: rgba(15, 168, 108, 0.3);
    border-radius: 50%;
    animation: particleFloat linear infinite;
}

@keyframes particleFloat {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(50px);
        opacity: 0;
    }
}

/* ==================== CONTACT LINKS & FORM NOTE ==================== */
.contact-item p a {
    color: inherit;
    transition: color var(--transition-fast);
}

.contact-item p a:hover {
    color: var(--primary-400);
}

.form-note {
    margin-top: 14px;
    font-size: 12px;
    line-height: 1.5;
    color: var(--text-muted);
    text-align: center;
}

.form-note i {
    color: var(--primary-400);
    margin-right: 4px;
}

/* ==================== RESULTS & FINDINGS ==================== */
.result-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.result-metric {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 16px;
    background: rgba(15, 168, 108, 0.06);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.result-value {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-400);
    line-height: 1.1;
}

.result-label {
    font-size: 12px;
    line-height: 1.4;
    color: var(--text-secondary);
}

.result-integration {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-top: 24px;
    padding: 20px 24px;
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--primary-500);
    border-radius: var(--radius-lg);
}

.result-integration i {
    font-size: 20px;
    color: var(--primary-400);
    margin-top: 2px;
}

.result-integration p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
}

.result-integration strong {
    color: var(--text-primary);
}

.inline-link {
    color: var(--primary-400);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.inline-link:hover {
    color: var(--primary-300, var(--primary-400));
}

/* ==================== DOCUMENT STATUS ==================== */
.doc-note {
    display: flex;
    gap: 8px;
    margin: 16px 16px 4px;
    padding: 10px 12px;
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-secondary);
    background: rgba(59, 130, 246, 0.08);
    border-left: 3px solid var(--info);
    border-radius: var(--radius-sm);
}

.doc-note > i {
    color: var(--info);
    margin-top: 3px;
}

.doc-item.is-unavailable {
    cursor: default;
}

.doc-item.is-unavailable:hover {
    background: transparent;
}

.doc-item.is-unavailable > i:first-child {
    opacity: 0.55;
}

.doc-badge {
    flex-shrink: 0;
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    color: var(--accent-400);
    background: rgba(245, 166, 35, 0.1);
}

.doc-badge-pending {
    color: var(--text-muted);
    background: rgba(148, 163, 184, 0.1);
}

@media (max-width: 576px) {
    .doc-item {
        gap: 10px;
        padding: 12px 10px;
    }

    .doc-badge {
        font-size: 10px;
        padding: 3px 8px;
    }
}

/* ==================== PRESENTATIONS: SLIDES & DEMO VIDEO ==================== */
/* Keep the "View Slides" buttons aligned at the bottom of each card */
.pres-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.pres-card .pres-link {
    margin-top: auto;
}

.pres-video {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: 24px;
    padding: 20px 28px;
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.pres-video > i {
    font-size: 28px;
    color: var(--accent-400);
}

.pres-video-info {
    flex: 1;
}

.pres-video-info h4 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.pres-video-info p {
    color: var(--text-secondary);
    font-size: 13px;
}

@media (max-width: 576px) {
    .pres-video {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
}

/* ==================== TEAM PHOTOS & EMAILS ==================== */
.team-photo {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center top;
    border: 2px solid rgba(15, 168, 108, 0.35);
    margin: 0 auto;
    display: block;
}

/* Keep the e-mail links aligned at the bottom of each card */
.team-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.team-email {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 12px;
    color: var(--text-muted);
    word-break: break-all;
    transition: var(--transition-base);
}

.team-email:hover {
    color: var(--primary-400);
}

/* ==================== LIGHT THEME ====================
   White background with dark text. Overrides the original dark palette
   above; greens and ambers are darkened so text stays readable on white. */
:root {
    --primary-300: #0a7a4f;
    --primary-400: #0b8a58;

    --accent-400: #c77c0a;
    --accent-500: #d4870f;

    --danger: #dc2626;
    --warning: #b45309;
    --success: #047857;
    --info: #2563eb;

    --bg-primary: #ffffff;
    --bg-secondary: #f4f7f5;
    --bg-card: #ffffff;
    --bg-card-hover: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.9);

    --text-primary: #111827;
    --text-secondary: #374151;
    --text-muted: #6b7280;

    --border-color: rgba(17, 24, 39, 0.12);
    --border-glow: rgba(15, 168, 108, 0.5);

    --gradient-hero: linear-gradient(135deg, #ffffff 0%, #f3faf6 50%, #e8f6ef 100%);
    --gradient-card: linear-gradient(145deg, #ffffff, #fbfcfb);

    --shadow-sm: 0 1px 3px rgba(17, 24, 39, 0.08);
    --shadow-md: 0 4px 14px rgba(17, 24, 39, 0.08);
    --shadow-lg: 0 10px 30px rgba(17, 24, 39, 0.12);
    --shadow-glow: 0 6px 20px rgba(15, 168, 108, 0.15);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.96);
}

.dropdown-menu {
    background: #ffffff;
}

.footer {
    background: #f1f4f2;
}

.particle {
    background: rgba(15, 168, 108, 0.35);
}

/* Cards get a light shadow so they stand out from the white page */
.lit-card, .gap-card, .problem-box, .solution-box, .objective-card,
.method-step, .tech-category, .milestone-item, .doc-category, .pres-card,
.pres-video, .supervisor-card, .team-card, .arch-layer, .contact-form-wrapper {
    box-shadow: var(--shadow-sm);
}



/* ==================== SITE SEARCH ==================== */
.nav-search-btn {
    width: 38px;
    height: 38px;
    margin-left: 8px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    background: transparent;
    color: var(--text-secondary);
    font-size: 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition-base);
}

.nav-search-btn:hover {
    color: var(--primary-400);
    border-color: var(--primary-500);
    background: rgba(15, 168, 108, 0.08);
}

.search-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(17, 24, 39, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 12vh 16px 16px;
}

.search-overlay[hidden] {
    display: none;
}

body.search-open {
    overflow: hidden;
}

.search-box {
    width: 100%;
    max-width: 640px;
    max-height: 72vh;
    display: flex;
    flex-direction: column;
    background: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 60px rgba(17, 24, 39, 0.25);
    overflow: hidden;
}

.search-input-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    border-bottom: 1px solid var(--border-color);
}

.search-input-wrap > i {
    color: var(--primary-400);
    font-size: 16px;
}

.search-input-wrap input {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    font-family: var(--font-primary);
    font-size: 16px;
    color: var(--text-primary);
    background: transparent;
}

.search-close {
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
}

.search-results {
    overflow-y: auto;
    padding: 6px;
}

.search-result {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.search-result.active {
    background: rgba(15, 168, 108, 0.08);
}

.search-result-section {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--primary-400);
}

.search-result-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.search-result-text {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.search-result mark {
    background: rgba(245, 166, 35, 0.3);
    color: inherit;
    border-radius: 2px;
    padding: 0 1px;
}

.search-empty,
.search-hint {
    padding: 18px;
    font-size: 13px;
    color: var(--text-muted);
}

.search-hint[hidden] {
    display: none;
}

/* Briefly outline the item the user jumped to */
.search-flash {
    animation: searchFlash 2.2s ease;
}

@keyframes searchFlash {
    0%, 60% { box-shadow: 0 0 0 3px var(--primary-500); }
    100% { box-shadow: var(--shadow-sm); }
}



/* ==================== SUPERVISOR PHOTOS ==================== */
.supervisor-photo {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(15, 168, 108, 0.35);
    margin: 0 auto 16px;
    display: block;
}

.supervisor-card .team-email {
    margin-top: 14px;
}

/* ==================== NAVBAR ON LAPTOPS & TABLETS ====================
   With 8 menu items + search the bar no longer fits on one line below
   ~1240px, so: compact links on small laptops, hamburger menu at 1100px. */
@media (max-width: 1280px) {
    .nav-link {
        padding: 8px 10px;
        font-size: 13.5px;
    }
}

@media (max-width: 1100px) {
    .nav-menu {
        position: fixed;
        top: 0;
        bottom: 0;
        right: -100%;
        width: 300px;
        height: auto;
        background: #ffffff;
        box-shadow: var(--shadow-lg);
        flex-direction: column;
        align-items: stretch;
        padding: 80px 24px 24px;
        gap: 4px;
        overflow-y: auto;
        transition: var(--transition-base);
        border-left: 1px solid var(--border-color);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        display: block;
        padding: 10px 16px;
        font-size: 14px;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: transparent;
        border: none;
        padding-left: 16px;
        box-shadow: none;
        display: none;
        backdrop-filter: none;
    }

    .nav-dropdown.open .dropdown-menu {
        display: block;
    }

    .nav-search-btn {
        margin-left: auto;
        margin-right: 12px;
    }
}

/* ==================== VERY SMALL PHONES (≤ 400px) ==================== */
/* Let grid cards shrink below their longest word instead of overflowing */
.objectives-grid > *,
.result-metrics > * {
    min-width: 0;
    overflow-wrap: break-word;
}

@media (max-width: 400px) {
    .objective-card {
        padding: 22px 18px;
    }

    .result-metric {
        padding: 10px;
    }
}

/* ==================== FIELD VISIT ==================== */
.visit-layout {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    gap: 32px;
    align-items: stretch;
}

.visit-feature,
.visit-thumb {
    margin: 0;
}

.visit-feature a,
.visit-thumb a {
    display: block;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    cursor: zoom-in;
}

.visit-feature img,
.visit-thumb img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.visit-feature a:hover img,
.visit-thumb a:hover img {
    transform: scale(1.04);
}

.visit-feature figcaption,
.visit-thumb figcaption {
    margin-top: 10px;
    font-size: 13px;
    color: var(--text-muted);
    text-align: center;
}

.visit-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.visit-facts {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 24px;
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.visit-facts li {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    font-size: 14px;
    color: var(--text-primary);
}

.visit-facts li > i {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    background: rgba(15, 168, 108, 0.1);
    color: var(--primary-400);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
}

.visit-facts span {
    display: block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.visit-feedback {
    position: relative;
    padding: 22px 24px 22px 26px;
    background: rgba(15, 168, 108, 0.06);
    border-left: 4px solid var(--primary-500);
    border-radius: var(--radius-md);
}

.visit-feedback > i {
    position: absolute;
    top: 18px;
    right: 20px;
    font-size: 28px;
    color: rgba(15, 168, 108, 0.2);
}

.visit-feedback h4 {
    font-family: var(--font-display);
    font-size: 16px;
    margin-bottom: 6px;
}

.visit-feedback p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.visit-contact {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.visit-contact a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    background: #ffffff;
}

.visit-contact a:hover {
    border-color: var(--primary-500);
    color: var(--primary-400);
}

.visit-contact .fa-whatsapp {
    color: #25d366;
    font-size: 15px;
}

.visit-gallery {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-top: 36px;
}

/* Photo viewer */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 2100;
    background: rgba(10, 12, 16, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 24px;
}

.lightbox[hidden] {
    display: none;
}

.lightbox figure {
    margin: 0;
    max-width: min(1100px, 100%);
    text-align: center;
}

.lightbox img {
    max-width: 100%;
    max-height: 80vh;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.lightbox figcaption {
    margin-top: 12px;
    color: #e5e7eb;
    font-size: 14px;
}

.lightbox-close,
.lightbox-nav {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    font-size: 18px;
    cursor: pointer;
}

.lightbox-close:hover,
.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.25);
}

.lightbox-close {
    position: absolute;
    top: 18px;
    right: 18px;
}

@media (max-width: 1024px) {
    .visit-layout {
        grid-template-columns: 1fr;
    }

    .visit-gallery {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 576px) {
    .visit-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    /* an odd last photo uses the full width instead of leaving a gap */
    .visit-thumb:last-child:nth-child(odd) {
        grid-column: span 2;
    }

    .lightbox {
        padding: 12px;
        gap: 4px;
    }

    .lightbox-nav {
        position: absolute;
        bottom: 24px;
    }

    .lightbox-prev { left: calc(50% - 56px); }
    .lightbox-next { right: calc(50% - 56px); }
}

/* ==================== ACCESSIBILITY ==================== */
/* "Skip to main content" — hidden until reached with the Tab key */
.skip-link {
    position: absolute;
    top: -60px;
    left: 16px;
    z-index: 3000;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    background: var(--primary-600);
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 12px;
}

/* Clear outline for keyboard users (mouse clicks are not affected) */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid var(--primary-500);
    outline-offset: 3px;
    border-radius: 4px;
}

#home:focus {
    outline: none;
}

/* Respect the device's "reduce motion" setting */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .hero-particles,
    .floating-card {
        display: none;
    }

    .reveal {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ==================== NO-JAVASCRIPT NOTICE ==================== */
/* Pinned to the bottom so the fixed navbar never covers it */
.noscript-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1100;
    box-shadow: 0 -4px 14px rgba(17, 24, 39, 0.08);
    padding: 10px 20px;
    background: #fff7e6;
    border-top: 1px solid rgba(245, 166, 35, 0.4);
    color: #7a4b00;
    font-size: 13px;
    text-align: center;
}

.noscript-bar i {
    margin-right: 6px;
}

/* ==================== LAST UPDATED ==================== */
.footer-bottom .footer-updated {
    margin-top: 4px;
    font-size: 12px;
}

.footer-updated i {
    margin-right: 4px;
    font-size: 11px;
}

/* ==================== SUPERVISOR DETAILS ==================== */
.supervisor-grid {
    max-width: 880px;
}

.supervisor-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.supervisor-card .supervisor-position {
    font-size: 13px;
    line-height: 1.6;
    margin-bottom: 14px;
}

.supervisor-position strong {
    color: var(--text-primary);
    font-size: 14px;
}

.supervisor-quals {
    width: 100%;
    margin-bottom: 14px;
    padding: 12px 14px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    text-align: left;
}

.supervisor-quals li {
    position: relative;
    padding-left: 18px;
    font-size: 12.5px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.supervisor-quals li + li {
    margin-top: 4px;
}

.supervisor-quals li::before {
    content: '\f19d';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 1px;
    font-size: 10px;
    color: var(--primary-400);
}

.supervisor-interests {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    margin-bottom: 16px;
}

.supervisor-interests span {
    padding: 3px 10px;
    border-radius: var(--radius-full);
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--info);
    font-size: 11.5px;
    font-weight: 500;
}

.supervisor-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: auto;
}

.supervisor-links .team-email {
    margin-top: 0;
}

@media (max-width: 768px) {
    .supervisor-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== HERO PHOTO ====================
   Smart-bin street photo behind the hero with a dark green tint, so the
   hero text and the navbar (until the page is scrolled) turn white. */
.hero {
    background: #062419 url('images/hero/hero-bg.jpg') center / cover no-repeat;
}

.hero-gradient {
    background:
        radial-gradient(ellipse 900px 520px at 50% 50%, rgba(3, 26, 17, 0.45), transparent 75%),
        linear-gradient(180deg, rgba(3, 30, 20, 0.80) 0%, rgba(4, 40, 26, 0.66) 45%, rgba(3, 26, 17, 0.88) 100%);
}

.hero-title {
    color: #ffffff;
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.88);
}

.hero-badge {
    background: rgba(15, 168, 108, 0.22);
    border-color: rgba(77, 202, 154, 0.45);
    color: #80d9b7;
}

.hero .stat-number {
    color: #4dca9a;
}

.hero .stat-label {
    color: rgba(255, 255, 255, 0.75);
}

.hero .btn-outline {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.5);
}

.hero .btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: #ffffff;
    color: #ffffff;
}

.hero .scroll-indicator {
    color: rgba(255, 255, 255, 0.75);
}

.hero .mouse {
    border-color: rgba(255, 255, 255, 0.6);
}

.navbar:not(.scrolled) .logo-title {
    color: #ffffff;
}

.navbar:not(.scrolled) .logo-sub {
    color: #80d9b7;
}

.navbar:not(.scrolled) .nav-search-btn {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.4);
}

.navbar:not(.scrolled) .nav-toggle:not(.active) span {
    background: #ffffff;
}

@media (min-width: 1101px) {
    .navbar:not(.scrolled) .nav-link {
        color: rgba(255, 255, 255, 0.88);
    }

    .navbar:not(.scrolled) .nav-link:hover,
    .navbar:not(.scrolled) .nav-link.active {
        color: #ffffff;
        background: rgba(255, 255, 255, 0.14);
    }
}

/* The scroll hint overlaps the hero buttons on phones */
@media (max-width: 600px) {
    .hero .scroll-indicator {
        display: none;
    }
}

/* Technology items stack one per row on phones, so give them equal width */
@media (max-width: 576px) {
    .tech-item {
        flex: 1 1 100%;
    }
}

/* ==================== CONTACT: EMAILS, TEMPLATE & MAP ==================== */
.contact-emails li + li {
    margin-top: 8px;
}

.contact-emails a {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-400);
}

.contact-emails a:hover {
    text-decoration: underline;
}

.contact-emails span {
    display: block;
    font-size: 12.5px;
    color: var(--text-muted);
}

.contact-item .contact-alt {
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-muted);
}

.contact-card-title {
    font-family: var(--font-display);
    font-size: 19px;
    color: var(--text-primary);
}

.contact-card-desc {
    margin: 6px 0 22px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-muted);
}

.form-group select {
    width: 100%;
    padding: 14px 16px;
    background: rgba(15, 168, 108, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 14px;
    color: var(--text-primary);
    outline: none;
    cursor: pointer;
}

.form-group select:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(15, 168, 108, 0.1);
}

.contact-extra {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-top: 40px;
    align-items: stretch;
}

.contact-card {
    display: flex;
    flex-direction: column;
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 32px;
}

.email-template {
    margin: 0;
    padding: 20px 22px;
    background: #0b1f17;
    border-radius: var(--radius-md);
    color: #a7f3d0;
    font-family: Consolas, 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
}

.template-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}

.contact-map {
    flex: 1;
    min-height: 320px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
}

.contact-map iframe {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 320px;
    border: 0;
}

.map-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-400);
}

.map-link:hover {
    text-decoration: underline;
}

@media (max-width: 1024px) {
    .contact-extra {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .contact-card {
        padding: 22px;
    }

    .template-actions .btn {
        flex: 1 1 100%;
        justify-content: center;
    }
}

/* GitHub repository link in Contact Us */
.repo-link {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 18px;
    padding: 16px 20px;
    background: #111827;
    border-radius: var(--radius-md);
    color: #ffffff;
    transition: var(--transition-base);
}

.repo-link:hover {
    background: #1f2937;
    transform: translateY(-2px);
}

.repo-link .fa-github {
    font-size: 28px;
}

.repo-link span {
    flex: 1;
    min-width: 0;
    font-size: 13px;
    color: #9ca3af;
    overflow-wrap: break-word;
}

.repo-link strong {
    display: block;
    font-size: 15px;
    color: #ffffff;
}

.repo-link .fa-arrow-up-right-from-square {
    font-size: 13px;
    color: #9ca3af;
}

/* ==================== ACKNOWLEDGEMENTS (About Us) ==================== */
.acknowledgements {
    display: flex;
    gap: 22px;
    max-width: 900px;
    margin: 56px auto 0;
    padding: 28px 32px;
    background: rgba(15, 168, 108, 0.06);
    border: 1px solid rgba(15, 168, 108, 0.15);
    border-left: 4px solid var(--primary-500);
    border-radius: var(--radius-lg);
}

.acknowledgements > i {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    background: rgba(15, 168, 108, 0.12);
    color: var(--primary-400);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.acknowledgements h3 {
    font-family: var(--font-display);
    font-size: 19px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.acknowledgements p {
    font-size: 14.5px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.acknowledgements strong {
    color: var(--text-primary);
}

@media (max-width: 576px) {
    .acknowledgements {
        flex-direction: column;
        gap: 14px;
        padding: 22px;
    }
}