/* ==========================================================================
   ICATIECE-2027 PREMIUM Academic Conference Visual Design System & CSS
   ========================================================================== */

/* 1. DESIGN TOKENS & ROOT PROPERTIES */
:root {
    /* Colors (Hex / HSL Equivalent) */
    --color-navy: #003366;          /* HSL(210, 100%, 20%) */
    --color-blue: #00629B;          /* HSL(202, 100%, 30%) */
    --color-light: #E8F4FC;         /* HSL(205, 78%, 95%) */
    --color-bg: #F5F7FA;            /* HSL(210, 20%, 97%) */
    --color-sky: #38bdf8;           /* HSL(199, 89%, 60%) */
    --color-cyan: #67e8f9;          /* HSL(187, 92%, 69%) */
    
    /* Premium Palette Extensions */
    --color-dark: #020B1E;          /* Deep Slate Navy for Dark Hero Mode */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-600: #475569;
    --color-gray-800: #1e293b;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    
    /* Typography Pairing */
    --font-ui: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-academic: 'Source Serif 4', Georgia, "Times New Roman", serif;
    
    /* Layout Constants */
    --max-width: 1280px;
    --header-height: 80px;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    
    /* Transition Timings */
    --ease-premium: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 0.2s var(--ease-premium);
    --transition-medium: 0.4s var(--ease-premium);
    --transition-slow: 0.8s var(--ease-premium);

    /* Shadows & Glassmorphic Highlights */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    --shadow-premium: 0 30px 60px -15px rgba(0, 51, 102, 0.12);
    --shadow-hover-lift: 0 25px 50px -12px rgba(0, 51, 102, 0.12), 0 0 24px rgba(56, 189, 248, 0.08);
    --shadow-timeline-highlight: 0 15px 35px rgba(245, 158, 11, 0.12);
    --glass-border: 1px solid rgba(255, 255, 255, 0.08);
    --glass-border-light: 1px solid rgba(0, 98, 155, 0.08);
    --glow-sky: 0 0 40px rgba(56, 189, 248, 0.15);
    --glow-cyan: 0 0 40px rgba(103, 232, 249, 0.15);
    --transition-card: all 0.4s var(--ease-premium);
}

/* 2. BASE RESET & GLOBAL STYLES */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-ui);
    background-color: var(--color-bg);
    /* Premium tech-grid background overlay */
    background-image: 
        linear-gradient(rgba(0, 98, 155, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 98, 155, 0.015) 1px, transparent 1px);
    background-size: 30px 30px;
    color: var(--color-gray-800);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-ui);
    font-weight: 700;
    color: var(--color-navy);
    line-height: 1.25;
}

p {
    font-size: 1rem;
    color: var(--color-gray-600);
}

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

/* Utility Containers */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: center;
}

@media (min-width: 992px) {
    .grid-2 {
        grid-template-columns: 1fr 1fr;
    }
}

/* Gradients & Badges */
.gradient-text {
    background: linear-gradient(135deg, var(--color-sky) 0%, var(--color-cyan) 50%, var(--color-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--color-blue);
    text-transform: uppercase;
    margin-bottom: 12px;
    position: relative;
    padding-left: 24px;
}

.section-badge::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 2px;
    background-color: var(--color-blue);
}

.section-title {
    font-family: var(--font-academic);
    font-size: clamp(1.85rem, 3.5vw + 1rem, 2.5rem);
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--color-navy);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-gray-600);
    max-width: 700px;
    margin-bottom: 48px;
}

/* 3. BUTTONS & INTERACTIVE ELEMENTS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    transition: all 0.3s var(--ease-premium);
    cursor: pointer;
    gap: 8px;
}

.btn svg {
    transition: transform 0.3s var(--ease-premium);
}

.btn:hover svg {
    transform: translateX(4px) translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-navy) 100%);
    color: var(--color-white);
    border: none;
    box-shadow: 0 4px 14px rgba(0, 51, 102, 0.25);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transition: left 0.6s var(--ease-premium);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 24px rgba(0, 51, 102, 0.3);
    background: linear-gradient(135deg, var(--color-blue) 15%, var(--color-navy) 100%);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.btn-glow {
    position: relative;
    z-index: 1;
}

.btn-glow::after {
    content: '';
    position: absolute;
    z-index: -1;
    inset: -2px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--color-sky), var(--color-cyan));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn-glow:hover::after {
    opacity: 1;
}

.btn-full {
    display: flex;
    width: 100%;
}

/* 4. ANIMATED ANNOUNCEMENT BAR */
.announcement-bar {
    background: linear-gradient(90deg, var(--color-navy) 0%, var(--color-blue) 50%, var(--color-navy) 100%);
    color: var(--color-white);
    padding: 8px 16px;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1001;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.announcement-container {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    overflow: hidden;
}

.announcement-badge {
    background-color: var(--color-sky);
    color: var(--color-dark);
    font-weight: 700;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 4px;
    letter-spacing: 0.05em;
    flex-shrink: 0;
    animation: pulseGlow 2s infinite ease-in-out;
}

.announcement-ticker {
    display: flex;
    gap: 48px;
    animation: ticker 25s linear infinite;
    white-space: nowrap;
}

.ticker-item {
    display: inline-block;
}

.announcement-close {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    padding: 4px;
}

.announcement-close:hover {
    color: var(--color-white);
}

@keyframes ticker {
    0% { transform: translateX(30%); }
    100% { transform: translateX(-100%); }
}

@keyframes pulseGlow {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.85; transform: scale(0.96); }
}

/* 5. STICKY GLASS NAVBAR */
.navbar {
    position: sticky;
    top: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    border-bottom: var(--glass-border-light);
    z-index: 1000;
    transition: all 0.35s var(--ease-premium);
}

.navbar.scrolled {
    height: 72px;
    background-color: rgba(255, 255, 255, 0.94);
    box-shadow: 0 10px 30px -10px rgba(0, 51, 102, 0.08);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    height: 100%;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Premium Co-Branded Navbar Elements */
.nav-brand-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo-img {
    display: block;
    object-fit: contain;
    flex-shrink: 0;
}

.brand-logo-dsatm {
    width: 46px;
    height: 46px;
    transition: transform 0.4s var(--ease-premium);
}

.nav-brand-wrapper:hover .brand-logo-dsatm {
    transform: rotate(-5deg) scale(1.05);
}

.brand-divider {
    width: 1px;
    height: 28px;
    background-color: rgba(0, 51, 102, 0.15);
}

.brand-text-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    line-height: 1.15;
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-navy);
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--color-blue);
}

.brand-tagline {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 1px;
}

.nav-menu {
    display: none;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 550;
    color: var(--color-gray-600);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-blue), var(--color-sky));
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--color-navy);
}

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

.nav-link.active {
    color: var(--color-navy);
}

.nav-cta {
    background-color: var(--color-blue);
    color: var(--color-white);
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
    box-shadow: 0 4px 10px rgba(0, 98, 155, 0.15);
}

.nav-cta:hover {
    background-color: var(--color-navy);
    transform: translateY(-1px);
    box-shadow: 0 6px 12px rgba(0, 51, 102, 0.2);
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1010;
}

.mobile-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--color-navy);
    border-radius: 2px;
    transition: all 0.3s ease;
}

@media (min-width: 992px) {
    .nav-menu {
        display: flex;
    }
    .mobile-toggle {
        display: none;
    }
}

/* Mobile Menu Open States */
.navbar.mobile-menu-active {
    background-color: var(--color-white);
}

.navbar.mobile-menu-active .nav-menu {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-white);
    padding: 40px 24px;
    gap: 24px;
    align-items: stretch;
    animation: slideDownMenu 0.4s var(--ease-premium);
}

.navbar.mobile-menu-active .nav-menu a {
    font-size: 1.25rem;
    padding: 8px 0;
    border-bottom: 1px solid var(--color-gray-100);
}

.navbar.mobile-menu-active .nav-cta {
    text-align: center;
    border-bottom: none;
    margin-top: 16px;
}

.navbar.mobile-menu-active .mobile-toggle .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.navbar.mobile-menu-active .mobile-toggle .bar:nth-child(2) {
    opacity: 0;
}

.navbar.mobile-menu-active .mobile-toggle .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

@keyframes slideDownMenu {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 6. HERO SECTION WITH PREMIUM VISUALS (Dark Mode Theme) */
.hero {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding: 130px 0 110px;
    position: relative;
    overflow: hidden;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-mesh {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 30%, rgba(0, 98, 155, 0.28) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(56, 189, 248, 0.18) 0%, transparent 50%);
    mix-blend-mode: screen;
    z-index: 1;
}

/* Floating Glowing Orbs */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.45;
    z-index: 1;
    pointer-events: none;
}

.orb-1 {
    width: 300px;
    height: 300px;
    background-color: var(--color-blue);
    top: 10%;
    left: 5%;
    animation: orbFloat 15s infinite alternate ease-in-out;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background-color: var(--color-sky);
    bottom: 10%;
    right: 5%;
    animation: orbFloat 20s infinite alternate-reverse ease-in-out;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background-color: var(--color-cyan);
    top: 50%;
    left: 45%;
    animation: orbFloat 12s infinite alternate ease-in-out;
}

.hero-svg-curves {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
}

.animated-curve {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawLine 6s ease-in-out forwards;
}

.curve-2 {
    animation-delay: 1.5s;
}

@keyframes orbFloat {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 40px) scale(1.15); }
}

@keyframes drawLine {
    to { stroke-dashoffset: 0; }
}

/* Hero Content Styling */
.hero-container {
    position: relative;
    z-index: 5;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.hero-badge-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 30px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    backdrop-filter: blur(8px);
}

.badge-ieee {
    background-color: rgba(56, 189, 248, 0.1);
    color: var(--color-sky);
    border: 1px solid rgba(56, 189, 248, 0.25);
    box-shadow: var(--glow-sky);
}

.badge-dsatm {
    background-color: rgba(255, 255, 255, 0.06);
    color: var(--color-light);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.badge-icon {
    flex-shrink: 0;
}

/* Premium Floating Co-Brand Banner inside Hero */
.hero-logo-banner {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-bottom: 36px;
}

.glass-logo-box {
    background: rgba(255, 255, 255, 0.03);
    border: var(--glass-border);
    backdrop-filter: blur(12px);
    border-radius: var(--border-radius-md);
    padding: 16px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    min-width: 140px;
    box-shadow: var(--shadow-md);
    transition: all 0.4s var(--ease-premium);
}

.glass-logo-box:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(103, 232, 249, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--glow-cyan);
}

.hero-brand-logo {
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.15));
}

.hero-brand-logo--dsatm {
    width: 56px;
    height: 56px;
}

.logo-box-text {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--color-light);
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.banner-connector {
    display: flex;
    align-items: center;
    height: 100%;
}

.hero-title {
    font-family: var(--font-academic);
    font-size: clamp(2rem, 5vw + 1.25rem, 3.75rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-white);
    margin-bottom: 24px;
    letter-spacing: -0.015em;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 1vw + 0.95rem, 1.25rem);
    color: var(--color-light);
    opacity: 0.85;
    max-width: 720px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

/* Glass Details Card */
.hero-info-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 600px;
    margin: 0 auto 48px;
    box-shadow: var(--shadow-lg);
}

@media (min-width: 576px) {
    .hero-info-card {
        flex-direction: row;
        justify-content: space-around;
        align-items: center;
        gap: 0;
        padding: 20px 10px;
    }
}

.info-item {
    display: flex;
    align-items: center;
    gap: 16px;
    text-align: left;
}

.info-item svg {
    color: var(--color-sky);
    flex-shrink: 0;
}

.info-item h3 {
    color: var(--color-white);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.info-item p {
    color: var(--color-light);
    opacity: 0.7;
    font-size: 0.85rem;
}

.info-divider {
    display: none;
    width: 1px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.15);
}

@media (min-width: 576px) {
    .info-divider {
        display: block;
    }
}

.hero-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-bottom: 56px;
    flex-wrap: wrap;
}

/* Countdown Panel */
.hero-countdown {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 32px;
    max-width: 500px;
    margin: 0 auto;
}

.countdown-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--color-sky);
    margin-bottom: 16px;
}

.countdown-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.countdown-box {
    background: rgba(255, 255, 255, 0.04);
    border: var(--glass-border);
    border-radius: var(--border-radius-sm);
    padding: 12px 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.countdown-num {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.1;
    font-family: var(--font-ui);
}

.countdown-unit {
    font-size: 0.7rem;
    color: var(--color-light);
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}

/* Animation Utilities for Page Load */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUpReveal 1s var(--ease-premium) forwards;
}

.hero-badge-container { animation-delay: 0.05s; }
.hero-logo-banner { animation-delay: 0.15s; }
.hero-title { animation-delay: 0.3s; }
.hero-subtitle { animation-delay: 0.5s; }
.hero-info-card { animation-delay: 0.7s; }
.hero-actions { animation-delay: 0.9s; }
.hero-countdown { animation-delay: 1.1s; }

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

/* 7. QUICK FACTS BAND */
.quick-facts {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    padding: 32px 0;
}

.facts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

@media (min-width: 768px) {
    .facts-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.fact-card {
    text-align: center;
    padding: 8px;
}

.fact-number {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-navy);
    margin-bottom: 4px;
}

.fact-label {
    font-size: 0.85rem;
    color: var(--color-gray-600);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* 8. ABOUT CONFERENCE */
.about-section {
    padding: 100px 0;
    background-color: var(--color-white);
}

.about-visual {
    display: flex;
    justify-content: center;
}

/* Premium Academic Card representation */
.glass-photo-card {
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-blue) 100%);
    border-radius: var(--border-radius-md);
    padding: 48px 32px;
    color: var(--color-white);
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-premium);
}

.photo-glow {
    position: absolute;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, var(--color-sky) 0%, transparent 70%);
    opacity: 0.3;
    top: -50px;
    right: -50px;
    pointer-events: none;
}

.photo-inner {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 280px;
    justify-content: space-between;
}

.photo-tag {
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    color: var(--color-sky);
    margin-bottom: 24px;
}

.photo-inner .academic-title {
    color: var(--color-white);
    font-family: var(--font-academic);
    font-size: 1.75rem;
    font-weight: 400;
    line-height: 1.35;
    margin-bottom: 24px;
}

.academic-quote {
    color: var(--color-light);
    font-style: italic;
    opacity: 0.9;
    font-size: 0.95rem;
    border-left: 2px solid var(--color-sky);
    padding-left: 16px;
    margin-bottom: 32px;
}

.photo-footer-logos {
    display: flex;
    justify-content: space-between;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: 16px;
}

.footer-logo-text {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    opacity: 0.8;
}

/* About Pillars */
.about-lead-box {
    margin-bottom: 28px;
    padding-left: 16px;
    border-left: 3px solid var(--color-blue);
}

.about-lead-box h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-navy);
}

.about-lead {
    font-size: 1.05rem;
    font-weight: 550;
    color: var(--color-gray-800);
}

/* 9. IEEE STUDENT BRANCH SECTION */
.ieee-student-branch {
    padding: 60px 0 100px;
    background-color: var(--color-bg);
}

.glass-card-premium {
    background: var(--color-white);
    border: var(--glass-border-light);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.branch-card {
    padding: 40px;
}

@media (min-width: 768px) {
    .branch-card {
        padding: 56px;
    }
}

.branch-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
}

@media (min-width: 992px) {
    .branch-grid {
        grid-template-columns: 1.2fr 0.8fr;
    }
}

.branch-badge {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--color-blue);
    background-color: var(--color-light);
    padding: 4px 12px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 16px;
}

.branch-title {
    font-family: var(--font-academic);
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--color-navy);
}

.branch-text {
    font-size: 1rem;
    color: var(--color-gray-600);
    margin-bottom: 20px;
}

.branch-features {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.b-feat {
    background-color: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-gray-800);
    padding: 8px 16px;
    border-radius: 30px;
}

/* Branch Visual Rings Animation */
.branch-visual {
    display: flex;
    justify-content: center;
}

.orb-container {
    width: 240px;
    height: 240px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rotating-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px dashed rgba(0, 98, 155, 0.2);
}

.ring-1 {
    width: 100%;
    height: 100%;
    border-color: rgba(0, 98, 155, 0.25);
    animation: rotate 25s linear infinite;
}

.ring-2 {
    width: 80%;
    height: 80%;
    border-color: rgba(56, 189, 248, 0.35);
    animation: rotate 15s linear infinite reverse;
}

.ieee-badge-center {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-blue) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(0, 98, 155, 0.2);
    z-index: 5;
    padding: 10px;
}

.branch-brand-logo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #ffffff;
    padding: 4px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.15));
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 10. PREVIOUS PUBLICATIONS & TECHNICAL CO-SPONSORS */
.publications-section {
    padding: 100px 0;
    background-color: var(--color-white);
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.grid-2-custom {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

@media (min-width: 992px) {
    .grid-2-custom {
        grid-template-columns: 1.1fr 0.9fr;
    }
}

.pub-card {
    padding: 40px;
    display: flex;
    flex-direction: column;
}

.pub-icon {
    width: 60px;
    height: 60px;
    background-color: var(--color-light);
    color: var(--color-blue);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.pub-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--color-navy);
}

.pub-statement {
    font-family: var(--font-academic);
    font-size: 1.25rem;
    color: var(--color-gray-800);
    line-height: 1.5;
    margin-bottom: 24px;
    border-left: 4px solid var(--color-blue);
    padding-left: 20px;
}

.pub-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.meta-tag {
    background-color: var(--color-gray-100);
    color: var(--color-gray-600);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 4px;
}

/* Sponsors Card */
.sponsors-card {
    padding: 40px;
    display: flex;
    flex-direction: column;
}

.sponsors-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--color-navy);
}

.sponsors-card p {
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.sponsors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 32px;
}

.sponsor-logo-box {
    background-color: var(--color-gray-50);
    border: 1px dashed var(--color-gray-200);
    border-radius: var(--border-radius-sm);
    padding: 16px 8px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: var(--transition-fast);
}

.sponsor-logo-box:hover {
    background-color: var(--color-light);
    border-color: var(--color-blue);
}

.sponsor-brand-logo {
    transition: transform 0.3s ease;
}

.sponsor-brand-logo--dsatm {
    width: 44px;
    height: 44px;
}


.sponsor-logo-box:hover .sponsor-brand-logo {
    transform: scale(1.06);
}

.sponsor-logo-box .logo-sub {
    font-size: 0.65rem;
    color: var(--color-gray-600);
    text-transform: uppercase;
    font-weight: 600;
    margin-top: 6px;
    display: block;
    line-height: 1.2;
}

.sponsor-benefits h4 {
    font-size: 0.95rem;
    color: var(--color-navy);
    margin-bottom: 12px;
}

.sponsor-benefits ul {
    list-style: none;
}

.sponsor-benefits li {
    font-size: 0.85rem;
    color: var(--color-gray-600);
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.sponsor-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-blue);
    font-weight: 700;
}

/* 11. CALL FOR PAPERS TRACKS */
.tracks-section {
    padding: 100px 0;
    background-color: var(--color-bg);
}

.tracks-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .tracks-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1200px) {
    .tracks-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .track-card:nth-child(5) {
        grid-column: span 1;
    }
}

.track-card {
    background-color: var(--color-white);
    border: 1px solid rgba(0, 98, 155, 0.08);
    border-radius: var(--border-radius-md);
    padding: 36px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-card);
    position: relative;
    overflow: hidden;
}

.track-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-blue), var(--color-sky));
    opacity: 0;
    transition: opacity 0.4s var(--ease-premium);
}

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

.track-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover-lift);
    border-color: rgba(0, 98, 155, 0.25);
    background: linear-gradient(135deg, var(--color-white) 0%, rgba(232, 244, 252, 0.2) 100%);
}

.track-num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-light);
    line-height: 1;
    margin-bottom: 16px;
    transition: all 0.4s var(--ease-premium);
}

.track-card:hover .track-num {
    color: var(--color-blue);
    transform: scale(1.1) translateX(4px);
}

.track-card h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    color: var(--color-navy);
}

.track-card p {
    font-size: 0.9rem;
    color: var(--color-gray-600);
    margin-bottom: 24px;
    min-height: 100px;
}

.track-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
}

.track-keywords li {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-blue);
    background-color: rgba(0, 98, 155, 0.05);
    border: 1px solid rgba(0, 98, 155, 0.08);
    padding: 4px 12px;
    border-radius: 100px;
    transition: all 0.3s var(--ease-premium);
}

.track-card:hover .track-keywords li {
    background-color: var(--color-light);
    border-color: rgba(0, 98, 155, 0.15);
}

.track-keywords li:hover {
    background-color: var(--color-blue) !important;
    color: var(--color-white) !important;
    border-color: var(--color-blue) !important;
    transform: translateY(-2px);
}

/* 12. INSTRUCTIONS FOR AUTHORS */
.authors-section {
    padding: 100px 0;
    background-color: var(--color-white);
}

.authors-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

@media (min-width: 992px) {
    .authors-grid {
        grid-template-columns: 1.1fr 0.9fr;
    }
}

.instructions-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.instruction-item {
    display: flex;
    gap: 16px;
    background-color: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-sm);
    padding: 20px;
    transition: var(--transition-fast);
}

.instruction-item:hover {
    border-color: var(--color-blue);
    background-color: var(--color-light);
}

.inst-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    line-height: 1;
}

.inst-details h4 {
    font-size: 1rem;
    margin-bottom: 6px;
    color: var(--color-navy);
}

.inst-details p {
    font-size: 0.85rem;
    color: var(--color-gray-600);
}

/* Submission Action Card */
.submission-panel {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.submission-box {
    padding: 40px;
    border: var(--glass-border-light);
}

.alert-banner {
    display: flex;
    gap: 12px;
    background-color: var(--color-warning-light);
    border-left: 4px solid var(--color-warning);
    padding: 16px;
    border-radius: 4px;
    margin-bottom: 24px;
    align-items: flex-start;
}

.alert-icon {
    font-size: 1.1rem;
    line-height: 1;
}

.alert-text {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-gray-800);
}

.submission-box h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.submission-box p {
    font-size: 0.9rem;
    margin-bottom: 32px;
}

.action-buttons-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 28px;
}

.help-box {
    border-top: 1px solid var(--color-gray-200);
    padding-top: 20px;
}

.help-title {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-gray-800);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.help-box p {
    font-size: 0.85rem;
    margin-bottom: 0;
}

/* 13. IMPORTANT DATES TIMELINE */
.dates-section {
    padding: 100px 0;
    background-color: var(--color-bg);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 40px auto 0;
    padding-left: 32px;
}

.timeline-line {
    position: absolute;
    left: 8px;
    top: 12px;
    bottom: 12px;
    width: 2px;
    background: linear-gradient(180deg, var(--color-blue) 0%, var(--color-sky) 50%, var(--color-cyan) 100%);
}.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

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

.timeline-dot {
    position: absolute;
    left: -33px;
    top: 12px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--color-white);
    border: 4px solid var(--color-blue);
    z-index: 2;
    transition: all 0.4s var(--ease-premium);
    box-shadow: 0 0 0 4px rgba(0, 98, 155, 0.1);
}

.timeline-item:hover .timeline-dot {
    background-color: var(--color-sky);
    border-color: var(--color-navy);
    transform: scale(1.3);
    box-shadow: 0 0 0 6px rgba(56, 189, 248, 0.2);
}

.timeline-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 98, 155, 0.08);
    transition: var(--transition-card);
}

.timeline-item:hover .timeline-card {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover-lift);
    border-color: rgba(0, 98, 155, 0.25);
    background: linear-gradient(135deg, var(--color-white) 0%, rgba(232, 244, 252, 0.15) 100%);
}

.timeline-date {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-blue);
    margin-bottom: 8px;
    letter-spacing: 0.03em;
}

.timeline-card h4 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: var(--color-navy);
}

.timeline-card p {
    font-size: 0.88rem;
    margin-bottom: 0;
}

/* Highlight style for Deadline */
.timeline-highlight .timeline-dot {
    border-color: var(--color-warning);
    background-color: var(--color-warning);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15), 0 0 10px rgba(245, 158, 11, 0.4);
}

.timeline-highlight:hover .timeline-dot {
    box-shadow: 0 0 0 6px rgba(245, 158, 11, 0.25), 0 0 14px rgba(245, 158, 11, 0.6);
    background-color: var(--color-white);
    border-color: var(--color-warning);
}

.timeline-highlight .timeline-card {
    border: 2px solid var(--color-warning);
    background-color: var(--color-white);
    box-shadow: 0 10px 30px rgba(245, 158, 11, 0.06);
    background: linear-gradient(135deg, var(--color-white) 0%, rgba(254, 243, 199, 0.12) 100%);
    position: relative;
}

.timeline-highlight:hover .timeline-card {
    box-shadow: var(--shadow-timeline-highlight);
    background: linear-gradient(135deg, var(--color-white) 0%, rgba(254, 243, 199, 0.25) 100%);
}

.deadline-pill {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--color-white);
    background-color: var(--color-warning);
    padding: 2px 8px;
    border-radius: 4px;
    letter-spacing: 0.05em;
}

/* 14. REGISTRATION FEES */
.registration-section {
    padding: 100px 0;
    background-color: var(--color-white);
}

.fee-tables-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-top: 40px;
}

@media (min-width: 992px) {
    .fee-tables-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.fee-card {
    padding: 40px;
    display: flex;
    flex-direction: column;
    transition: var(--transition-card);
}

.fee-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover-lift);
}

.fee-card-header {
    border-bottom: 1px solid var(--color-gray-100);
    padding-bottom: 24px;
    margin-bottom: 16px;
}

.fee-card-header h3 {
    font-size: 1.5rem;
    color: var(--color-navy);
}

.currency-tag {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-gray-600);
    text-transform: uppercase;
    margin-top: 4px;
}

.fee-body {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.fee-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 12px;
    margin: 0 -12px;
    border-bottom: 1px dashed var(--color-gray-100);
    border-radius: var(--border-radius-sm);
    transition: all 0.3s var(--ease-premium);
}

.fee-row:hover {
    background-color: rgba(0, 98, 155, 0.04);
    padding-left: 20px;
    padding-right: 4px;
}

.fee-row:last-child {
    border-bottom: none;
}

.fee-details h4 {
    font-size: 0.95rem;
    color: var(--color-navy);
    margin-bottom: 2px;
}

.fee-details p {
    font-size: 0.8rem;
    color: var(--color-gray-600);
}

.fee-prices {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.price-non {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-gray-800);
}

.price-ieee {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-blue);
    background-color: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.2);
    padding: 3px 10px;
    border-radius: 100px;
    transition: all 0.3s var(--ease-premium);
}

.fee-row:hover .price-ieee {
    background-color: var(--color-blue);
    color: var(--color-white);
    border-color: var(--color-blue);
}

.price-ieee small {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-left: 2px;
}

.fee-footer-cta {
    margin-top: 36px;
}

/* 15. KEY COMMITTEES */
.committees-section {
    padding: 100px 0;
    background-color: var(--color-bg);
}

.committee-filters {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.filter-btn {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    padding: 8px 18px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-gray-600);
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--color-blue);
    color: var(--color-blue);
}

.filter-btn.active {
    background-color: var(--color-blue);
    border-color: var(--color-blue);
    color: var(--color-white);
}

/* Committee Lists Logic */
.committee-group {
    display: none;
    animation: fadeReveal 0.5s ease-in-out forwards;
}

.committee-group.active {
    display: block;
}

@keyframes fadeReveal {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.committee-subcategory {
    margin-bottom: 48px;
}

.committee-subcategory:last-child {
    margin-bottom: 0;
}

.committee-subcategory h3 {
    font-size: 1.25rem;
    margin-bottom: 24px;
    border-left: 4px solid var(--color-blue);
    padding-left: 12px;
    color: var(--color-navy);
}

.committee-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 576px) {
    .committee-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .committee-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.committee-member-card {
    background-color: var(--color-white);
    border: 1px solid rgba(0, 98, 155, 0.06);
    border-radius: var(--border-radius-md);
    padding: 22px;
    transition: var(--transition-card);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
}

.committee-member-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-blue), var(--color-sky));
    opacity: 0;
    transition: opacity 0.3s var(--ease-premium);
}

.committee-member-card:hover::before {
    opacity: 1;
}

.committee-member-card:hover {
    border-color: rgba(0, 98, 155, 0.18);
    box-shadow: var(--shadow-hover-lift);
    transform: translateY(-4px);
    background: linear-gradient(135deg, var(--color-white) 0%, rgba(232, 244, 252, 0.25) 100%);
}

.committee-member-card.card-highlight {
    background: linear-gradient(135deg, rgba(232, 244, 252, 0.4) 0%, rgba(232, 244, 252, 0.8) 100%);
    border-color: rgba(0, 98, 155, 0.15);
}

.committee-member-card.card-highlight::before {
    opacity: 1;
    width: 4px;
}

.committee-member-card h4 {
    font-size: 0.95rem;
    color: var(--color-navy);
    margin-bottom: 4px;
}

.c-role {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-blue);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
    display: inline-block;
}

.c-aff {
    font-size: 0.8rem;
    color: var(--color-gray-600);
}

.committee-grid-4 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

@media (min-width: 768px) {
    .committee-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 15. VENUE DETAILS */
.venue-section {
    padding: 100px 0;
    background-color: var(--color-white);
}

.venue-info {
    padding-right: 0;
}

@media (min-width: 992px) {
    .venue-info {
        padding-right: 40px;
    }
}

.venue-lead {
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.venue-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 36px;
}

.v-card {
    background-color: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-sm);
    padding: 20px;
}

.v-card h4 {
    font-size: 0.95rem;
    color: var(--color-navy);
    margin-bottom: 6px;
}

.v-card p {
    font-size: 0.85rem;
}

.contact-card {
    background-color: var(--color-light);
    border-radius: var(--border-radius-sm);
    padding: 24px;
}

.contact-card h4 {
    font-size: 0.95rem;
    color: var(--color-navy);
    margin-bottom: 6px;
}

.contact-card p {
    font-size: 0.85rem;
    margin-bottom: 12px;
}

.contact-email {
    font-weight: 700;
    font-size: 1rem;
}

/* Virtual Map Representation */
.map-container {
    background-color: var(--color-dark);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 400px;
}

.map-placeholder {
    background: radial-gradient(circle at center, rgba(0, 98, 155, 0.4) 0%, transparent 80%),
                repeating-linear-gradient(0deg, rgba(255,255,255,0.03) 0px, rgba(255,255,255,0.03) 1px, transparent 1px, transparent 20px),
                repeating-linear-gradient(90deg, rgba(255,255,255,0.03) 0px, rgba(255,255,255,0.03) 1px, transparent 1px, transparent 20px),
                #0b1528;
    position: relative;
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.pulse-marker {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--color-sky);
    position: relative;
    box-shadow: 0 0 20px var(--color-sky);
}

.pulse-marker::before {
    content: '';
    position: absolute;
    inset: -12px;
    border-radius: 50%;
    border: 2px solid var(--color-sky);
    opacity: 0.8;
    animation: markerPulse 2s infinite ease-out;
}

@keyframes markerPulse {
    0% { transform: scale(0.6); opacity: 1; }
    100% { transform: scale(1.6); opacity: 0; }
}

.map-overlay-card {
    position: absolute;
    bottom: 24px;
    left: 24px;
    right: 24px;
    background-color: rgba(11, 21, 40, 0.85);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--border-radius-sm);
    padding: 16px;
    color: var(--color-white);
}

.map-overlay-card h3 {
    color: var(--color-white);
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.map-overlay-card p {
    color: var(--color-light);
    opacity: 0.7;
    font-size: 0.75rem;
}

.coord-tag {
    display: inline-block;
    background-color: rgba(56, 189, 248, 0.15);
    color: var(--color-sky);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    margin-top: 8px;
}

.map-actions {
    background-color: var(--color-white);
    padding: 16px 24px;
    border-top: 1px solid var(--color-gray-200);
}

/* 16. OPTIONAL PORTAL PREVIEW */
.portal-section {
    padding: 100px 0;
    background-color: var(--color-bg);
}

.portal-wrapper {
    padding: 40px;
}

@media (min-width: 768px) {
    .portal-wrapper {
        padding: 56px;
    }
}

.portal-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: center;
}

@media (min-width: 992px) {
    .portal-grid {
        grid-template-columns: 1.1fr 0.9fr;
    }
}

.portal-badge {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--color-blue);
    background-color: var(--color-light);
    padding: 4px 12px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 16px;
}

.portal-title {
    font-family: var(--font-academic);
    font-size: 2rem;
    margin-bottom: 20px;
}

.portal-steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 32px;
}

.p-step {
    display: flex;
    gap: 16px;
}

.p-step .step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--color-blue);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 4px;
}

.p-step h4 {
    font-size: 0.95rem;
    color: var(--color-navy);
    margin-bottom: 4px;
}

.p-step p {
    font-size: 0.85rem;
}

/* CMT Mockup Form Design */
.portal-mockup {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.mockup-header {
    background-color: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.mockup-dots {
    display: flex;
    gap: 6px;
}

.mockup-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #cbd5e1;
}

.mockup-address {
    font-size: 0.7rem;
    color: var(--color-gray-600);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: 4px;
    padding: 2px 12px;
    flex-grow: 1;
    font-family: monospace;
}

.mockup-body {
    padding: 24px;
}

.form-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 16px;
    border-bottom: 1px solid var(--color-gray-100);
    padding-bottom: 8px;
}

.mockup-form-group {
    margin-bottom: 16px;
}

.mockup-form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-gray-800);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.mockup-form-group select,
.mockup-form-group input,
.mockup-form-group textarea {
    width: 100%;
    padding: 10px 12px;
    background-color: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: var(--font-ui);
    color: var(--color-gray-600);
}

.mockup-form-group textarea {
    height: 80px;
    resize: none;
}

.mockup-submit-btn {
    margin-top: 8px;
}

/* 18. PREMIUM FOOTER */
.premium-footer {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding: 80px 0 0;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 1.2fr 0.8fr 0.8fr 1.2fr;
    }
}

.footer-brand-display {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-bottom: 20px;
}

.footer-brand-divider {
    width: 1px;
    height: 26px;
    background-color: rgba(255, 255, 255, 0.15);
    flex-shrink: 0;
}

.footer-brand-logo--dsatm {
    width: 36px;
    height: 36px;
}



.footer-info .footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: 16px;
    display: block;
}

.footer-desc {
    color: var(--color-light);
    opacity: 0.7;
    font-size: 0.85rem;
    margin-bottom: 16px;
}

.footer-sub-sponsor {
    font-size: 0.8rem;
    color: var(--color-light);
    opacity: 0.9;
    margin-bottom: 24px;
}

.footer-socials {
    display: flex;
    gap: 16px;
}

.footer-socials a {
    color: var(--color-light);
    opacity: 0.6;
    transition: var(--transition-fast);
}

.footer-socials a:hover {
    color: var(--color-sky);
    opacity: 1;
}

.footer-links h4,
.footer-contact h4 {
    color: var(--color-white);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--color-light);
    opacity: 0.7;
}

.footer-links a:hover {
    color: var(--color-sky);
    opacity: 1;
}

.footer-contact p {
    color: var(--color-light);
    opacity: 0.7;
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: 16px;
}

.fc-email a {
    color: var(--color-sky);
    font-weight: 600;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 24px 0;
}

.footer-bottom-flex {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    text-align: center;
}

@media (min-width: 768px) {
    .footer-bottom-flex {
        flex-direction: row;
        text-align: left;
    }
}

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--color-light);
    opacity: 0.6;
    margin-bottom: 0;
}

/* 19. SCROLL REVEAL TRIGGERS AND EFFECTS */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-premium), transform 0.8s var(--ease-premium);
}

[data-reveal="left"] {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s var(--ease-premium), transform 0.8s var(--ease-premium);
}

[data-reveal="right"] {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s var(--ease-premium), transform 0.8s var(--ease-premium);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translate(0, 0);
}

/* 20. WEBSITE MANAGED BY SPECIAL PREMIUM DESIGN */
.website-managed-section {
    max-width: 550px;
    margin-top: 56px !important;
}

.managed-by-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(240, 248, 255, 0.85) 100%);
    border: 1px solid rgba(0, 98, 155, 0.16);
    border-radius: var(--border-radius-md);
    padding: 28px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 10px 30px -10px rgba(0, 98, 155, 0.12), 
                inset 0 1px 0 rgba(255, 255, 255, 0.6);
    display: flex;
    flex-direction: column;
}

/* Subtle tech accent indicator */
.managed-by-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-blue), var(--color-sky));
    transition: width 0.3s ease;
}

/* Micro-dot grid background pattern for technical touch */
.managed-by-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(0, 98, 155, 0.04) 1px, transparent 1px);
    background-size: 16px 16px;
    opacity: 0.7;
    pointer-events: none;
    z-index: 1;
}

.managed-by-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 24px 48px -18px rgba(0, 98, 155, 0.22),
                0 0 20px rgba(56, 189, 248, 0.15);
    border-color: rgba(56, 189, 248, 0.4);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(240, 248, 255, 0.9) 100%);
}

.managed-by-card:hover::before {
    width: 6px;
}

.managed-by-header {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.managed-by-main {
    display: flex;
    flex-direction: column;
}

.managed-by-main h4 {
    font-size: 1.3rem;
    color: var(--color-navy);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 6px;
    letter-spacing: -0.015em;
    background: linear-gradient(135deg, var(--color-navy) 30%, var(--color-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.managed-by-main .c-role {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-blue);
    margin-bottom: 6px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.managed-by-main .c-role::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-sky);
}

.managed-by-main .c-aff {
    font-size: 0.82rem;
    color: var(--color-gray-600);
    line-height: 1.5;
    font-weight: 500;
}

/* ==========================================================================
   21. NEW PREMIUM FUNCTIONALITIES & DESIGN UPDATES
   ========================================================================== */

/* Focus outlines for better keyboard accessibility (WCAG 2.2 AA) */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
    outline: 2px solid var(--color-sky);
    outline-offset: 4px;
}

/* Scroll Progress Bar */
.scroll-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-blue), var(--color-sky), var(--color-cyan));
    z-index: 1002;
    transition: width 0.1s ease-out;
}

/* Smooth Back-to-Top Button */
.back-to-top-btn {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-navy);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 25px -5px rgba(0, 51, 102, 0.3), var(--glow-sky);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px) scale(0.9);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 999;
}

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

.back-to-top-btn:hover {
    background-color: var(--color-blue);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 15px 30px -5px rgba(0, 98, 155, 0.4), var(--glow-cyan);
}

.back-to-top-btn:focus-visible {
    outline: 2px solid var(--color-sky);
    outline-offset: 4px;
}

/* FAQ Accordion Section */
.faq-section {
    padding: 100px 0;
    background-color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background-color: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    transition: all 0.4s var(--ease-premium);
}

.faq-item:hover {
    border-color: rgba(0, 98, 155, 0.25);
    background-color: var(--color-white);
    box-shadow: 0 10px 25px -10px rgba(0, 51, 102, 0.05);
}

.faq-item.active {
    border-color: var(--color-blue);
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.faq-trigger {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-navy);
    cursor: pointer;
    gap: 16px;
}

.faq-trigger:focus-visible {
    outline: none;
    background-color: var(--color-light);
}

.faq-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--color-light);
    color: var(--color-blue);
    transition: all 0.4s var(--ease-premium);
}

.faq-item.active .faq-icon {
    background-color: var(--color-blue);
    color: var(--color-white);
    transform: rotate(45deg);
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 0 24px;
    opacity: 0;
}

.faq-item.active .faq-content {
    max-height: 200px; /* arbitrary height to slide down */
    padding-bottom: 24px;
    opacity: 1;
}

.faq-content p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-gray-600);
}

/* Sponsor logo carousel marquee */
.sponsor-carousel-container {
    overflow: hidden;
    position: relative;
    width: 100%;
    margin-top: 16px;
    /* Soft edges via gradient masking */
    -webkit-mask-image: linear-gradient(to right, transparent, white 20%, white 80%, transparent);
    mask-image: linear-gradient(to right, transparent, white 20%, white 80%, transparent);
}

.sponsor-carousel-track {
    display: flex;
    gap: 40px;
    width: max-content;
    animation: marquee 20s linear infinite;
    padding: 12px 0;
}

.sponsor-carousel-container:hover .sponsor-carousel-track {
    animation-play-state: paused;
}

.sponsor-carousel-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 150px;
    background-color: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-sm);
    padding: 16px 20px;
    transition: var(--transition-fast);
}

.sponsor-carousel-item:hover {
    background-color: var(--color-light);
    border-color: var(--color-blue);
    transform: translateY(-2px);
}

.carousel-logo {
    display: block;
    object-fit: contain;
    max-height: 48px;
    transition: transform 0.3s ease;
}

.carousel-logo-wrapper {
    background: #ffffff;
    border-radius: 4px;
    padding: 4px 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 44px;
}

.carousel-logo-sub {
    font-size: 0.65rem;
    color: var(--color-gray-600);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 8px;
    text-align: center;
    line-height: 1.1;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-50% - 20px)); /* move past first half of items */
    }
}

/* Mockup Form Interactivity & Focus Enhancements */
.mockup-form-group select:focus,
.mockup-form-group input:focus,
.mockup-form-group textarea:focus {
    background-color: var(--color-white);
    border-color: var(--color-blue);
    box-shadow: 0 0 0 3px rgba(0, 98, 155, 0.12);
    outline: none;
}

/* Accessibility: Respect system preferences for reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, ::before, ::after {
        animation-delay: -1ms !important;
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        background-attachment: initial !important;
        scroll-behavior: auto !important;
        transition-duration: 0s !important;
        transition-delay: 0s !important;
    }
    
    .scroll-progress-bar {
        transition: none !important;
    }
}