@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ==========================================================================
   DESIGN TOKENS & UTILITIES (MATCHING CPSIOT.IN LIGHT BLUE THEME)
   ========================================================================== */
:root {
    /* Premium corporate Blue & Ice-Blue Theme */
    --bg-dark: #f4f9ff;          /* Fresh ice-blue body background */
    --bg-alt: #e8f3ff;           /* Soft pastel blue sections */
    --bg-card: #ffffff;          /* Pure white card containers */
    --bg-card-hover: #ffffff;
    --primary: #0052cc;          /* Vibrant Tech Blue */
    --primary-hover: #0040a3;    /* Deep Tech Blue */
    --primary-glow: rgba(0, 82, 204, 0.05);
    --secondary: #0040a3;
    --accent: #00b4d8;           /* Vibrant Ice Cyan */
    --text-main: #071e3d;        /* Midnight navy headings */
    --text-muted: #3b597d;       /* Muted steel blue text */
    --border-color: #d6e4f0;     /* Light blue-grey border */
    --border-hover: #0052cc;
    
    /* Gradients */
    --grad-primary: linear-gradient(135deg, #0052cc 0%, #003399 100%);
    --grad-accent: linear-gradient(135deg, #00b4d8 0%, #00d2fc 100%);
    --grad-text: linear-gradient(135deg, #071e3d 0%, #0052cc 100%);
    --grad-glow: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(244, 249, 255, 0.95) 100%);
    
    /* Typography */
    --font-heading: 'Outfit', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    
    /* Spacing & Effects */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --shadow-soft: 0 20px 40px -15px rgba(0, 82, 204, 0.08);
    --shadow-card: 0 8px 30px rgba(7, 30, 61, 0.04), 0 2px 8px rgba(7, 30, 61, 0.02);
    --shadow-glow: 0 0 20px rgba(0, 82, 204, 0.08);
    --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-dark);
}

body {
    font-family: var(--font-body);
    color: var(--text-muted);
    line-height: 1.65;
    overflow-x: hidden;
    background-color: var(--bg-dark);
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-main);
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

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

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

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

/* Shared Layout Containers */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-padding {
    padding: 80px 0;
}

.text-gradient {
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* ==========================================================================
   NAVIGATION BAR & TOP BAR
   ========================================================================== */
.top-bar {
    background: var(--primary);
    color: #ffffff;
    padding: 8px 0;
    font-size: 0.88rem;
    font-weight: 500;
}

.top-bar-container {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.top-bar-contact {
    display: flex;
    gap: 24px;
}

.top-bar-contact a {
    color: #ffffff !important;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
}

.top-bar-contact a:hover {
    opacity: 0.9;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: #ffffff;
    border-bottom: 1px solid #e2e8f0;
    transition: var(--transition);
}

.header.scrolled {
    background: #ffffff;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    border-bottom: 1px solid rgba(0, 82, 204, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
}

/* Dropdown Menu Styles */
.dropdown {
    position: relative;
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-soft);
    list-style: none;
    padding: 10px 0;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1001;
}

.dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    text-align: left;
    transition: var(--transition);
}

.dropdown-menu li a:hover {
    background: var(--bg-alt);
    color: var(--primary);
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.logo-left {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-right {
    display: flex;
    align-items: center;
}

.logo-text-hide {
    display: inline-block;
    transition: var(--transition);
}

@media (max-width: 1200px) {
    .logo-text-hide {
        display: none !important;
    }
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo:hover {
    color: var(--primary);
}

.logo-icon {
    font-size: 1.6rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 28px;
}

.logo-title {
    color: var(--text-main);
    transition: var(--transition);
}

.logo-subtitle {
    color: var(--text-muted);
    transition: var(--transition);
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
    padding: 8px 0;
    transition: var(--transition);
}

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

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

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

.nav-btn {
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    background: var(--primary);
    color: #fff !important;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 4px 6px rgba(4, 107, 210, 0.15);
    border: none;
    cursor: pointer;
}

.nav-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 12px rgba(4, 107, 210, 0.25);
}

/* Mobile Menu Toggle */
.hamburger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    color: var(--text-main);
    padding: 8px;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-main);
    margin: 5px 0;
    transition: var(--transition);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 10px rgba(4, 107, 210, 0.15);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(4, 107, 210, 0.25);
}

.btn-secondary {
    background: #fff;
    color: var(--primary);
    border: 1px solid var(--primary);
    box-shadow: var(--shadow-card);
}

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

/* ==========================================================================
   HERO / HOMEPAGE
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: linear-gradient(rgba(7, 30, 61, 0.75), rgba(7, 30, 61, 0.85)), url('../images/hero_bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: #ffffff;
    padding: 120px 0 80px 0;
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
    width: 100%;
}

@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    .hero-left {
        align-items: center !important;
        text-align: center !important;
    }
    .hero-ctas {
        justify-content: center !important;
    }
}

.hero-banner-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: 30px;
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.15) 0%, rgba(0, 240, 255, 0.15) 100%);
    border: 1px solid rgba(0, 240, 255, 0.25);
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 3.8rem;
    line-height: 1.1;
    margin-bottom: 20px;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 0%, #00b0ff 50%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 850px;
    margin: 0 auto 40px auto;
    font-weight: 500;
    line-height: 1.6;
}

.hero-glass-panel {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease, border-color 0.3s ease;
}

.hero-glass-panel:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 180, 216, 0.45) !important;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4) !important;
}

.hero-ctas {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
}

.hero-ctas .btn {
    border-radius: 30px;
    padding: 14px 32px;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.hero-ctas .btn-primary {
    background: linear-gradient(135deg, #1e88e5 0%, #1565c0 100%);
    box-shadow: 0 4px 15px rgba(21, 101, 192, 0.35);
    border: none;
    color: #ffffff;
}

.hero-ctas .btn-primary:hover {
    background: linear-gradient(135deg, #1976d2 0%, #0d47a1 100%);
    box-shadow: 0 6px 20px rgba(21, 101, 192, 0.45);
    transform: translateY(-2px);
}

.hero-ctas .btn-secondary {
    background: #ffffff;
    color: #1565c0;
    border: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.hero-ctas .btn-secondary:hover {
    background: #f8fafc;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    transform: translateY(-2px);
}

/* Countdown Clock */
.countdown-container {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 20px 32px;
    border-radius: var(--radius-md);
    max-width: 550px;
    margin: 0 auto;
    box-shadow: var(--shadow-soft);
    color: #ffffff;
}

.countdown-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 12px;
}

.countdown {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
}

.countdown-number {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1;
}

.countdown-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.75);
    margin-top: 4px;
}

/* ==========================================================================
   CARDS & FEATURES (About, Info Boxes)
   ========================================================================== */
.section-title {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 12px;
    color: var(--text-main);
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 50px auto;
    font-size: 1rem;
}

.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 28px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: var(--transition);
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary);
    opacity: 0;
    transition: var(--transition);
}

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

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

.card-icon {
    font-size: 2.2rem;
    margin-bottom: 16px;
    display: inline-block;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 10px;
    color: var(--text-main);
}

.card-text {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==========================================================================
   COMMITTEE SECTIONS
   ========================================================================== */
.committee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.member-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
}

.member-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-soft);
}

.member-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--bg-alt);
    margin: 0 auto 12px auto;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--primary);
    font-size: 1.8rem;
    color: var(--primary);
}

.member-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 4px;
}

.member-role {
    font-size: 0.85rem;
    color: var(--primary);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.member-inst {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* ==========================================================================
   TIMELINE (Important Dates)
   ========================================================================== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 30px 0;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 3px;
    background-color: var(--border-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1.5px;
}

.timeline-item {
    padding: 10px 30px;
    position: relative;
    background-color: inherit;
    width: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    right: -8px;
    background-color: var(--bg-dark);
    border: 3px solid var(--primary);
    top: 25px;
    border-radius: 50%;
    z-index: 1;
    transition: var(--transition);
}

.timeline-item:hover::after {
    border-color: var(--secondary);
    background-color: var(--primary);
}

.left {
    left: 0;
}

.right {
    left: 50%;
}

.right::after {
    left: -8px;
}

.timeline-content {
    padding: 20px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    position: relative;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
}

.timeline-date {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--primary);
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.timeline-title {
    font-size: 1.2rem;
    color: var(--text-main);
    margin-bottom: 6px;
}

.timeline-desc {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.5;
}

/* ==========================================================================
   REGISTRATION TABLES
   ========================================================================== */
.table-container {
    overflow-x: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    margin-bottom: 40px;
}

.table-fees {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    min-width: 600px;
}

.table-fees th {
    background: var(--bg-alt);
    font-family: var(--font-heading);
    font-weight: 600;
    padding: 14px 20px;
    border-bottom: 2px solid var(--border-color);
    color: var(--text-main);
}

.table-fees td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
}

.table-fees tr:hover td {
    background: rgba(4, 107, 210, 0.02);
}

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

.highlight-price {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--primary);
}

/* ==========================================================================
   FAQ ACCORDIONS
   ========================================================================== */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item summary {
    padding: 18px 22px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-main);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.faq-item summary::after {
    content: '+';
    font-size: 1.4rem;
    color: var(--primary);
    transition: var(--transition);
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
    color: var(--primary-hover);
}

.faq-answer {
    padding: 0 22px 18px 22px;
    color: var(--text-muted);
    font-size: 0.92rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-alt);
}

/* ==========================================================================
   TRACKS LISTS
   ========================================================================== */
.track-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
}

.track-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-soft);
}

.track-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 14px;
    margin-bottom: 18px;
}

.track-num {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.track-title {
    font-size: 1.35rem;
    margin: 4px 0;
    color: var(--text-main);
}

.track-chair {
    font-size: 0.88rem;
    color: var(--text-muted);
}

.track-topics {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.track-topics li {
    font-size: 0.88rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-alt);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 30px;
    transition: all 0.25s ease;
}

.track-topics li:hover {
    background: rgba(4, 107, 210, 0.08);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.track-topics li::before {
    content: '✓';
    color: var(--primary);
    font-weight: 800;
}

/* ==========================================================================
   CONTACT & TRAVEL
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 36px;
}

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

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 18px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-card);
}

.info-icon {
    font-size: 1.6rem;
    color: var(--primary);
}

.info-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 2px;
}

.info-desc {
    color: var(--text-muted);
    font-size: 0.88rem;
}

.contact-form-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 32px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
}

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

.form-label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    background: var(--bg-alt);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 0.92rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
    background: var(--bg-alt);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

/* Travel Cards */
.travel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 36px;
}

.travel-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: var(--radius-sm);
    text-align: center;
    box-shadow: var(--shadow-card);
}

.travel-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

/* ==========================================================================
   SPONSORS & FOOTER (DARK BLUE CONTRAST THEME)
   ========================================================================== */
.sponsors-section {
    background: var(--bg-alt);
    border-top: 1px solid var(--border-color);
    padding: 50px 0;
}

.sponsors-wrap {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 40px;
}

.sponsor-logo {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-muted);
    opacity: 0.7;
    transition: var(--transition);
}

.sponsor-logo:hover {
    opacity: 1;
    color: var(--primary);
}

.footer {
    border-top: 1px solid var(--border-color);
    background: #111111;         /* Dark Footer matching cpsiot.in original dark background */
    padding: 60px 0 24px 0;
    font-size: 0.88rem;
    color: #94a3b8;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 40px;
}

.footer-col h4 {
    color: #ffffff;
    font-size: 1.05rem;
    margin-bottom: 16px;
    font-family: var(--font-heading);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: #94a3b8;
}

.footer-links a:hover {
    color: #ffffff;
    padding-left: 2px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom p {
    font-size: 0.82rem;
}

.footer-bottom a {
    color: #ffffff;
    text-decoration: underline;
}

/* Scroll to top button */
.scroll-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--primary);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVENESS)
   ========================================================================== */
@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 120px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 120px);
        background: #ffffff;
        flex-direction: column;
        justify-content: flex-start;
        padding: 30px 0;
        gap: 20px;
        transition: 0.35s ease-in-out;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
        border-top: 1px solid var(--border-color);
        overflow-y: auto;
    }
    
    .dropdown-menu {
        position: static !important;
        transform: none !important;
        opacity: 1 !important;
        visibility: visible !important;
        box-shadow: none !important;
        border: none !important;
        padding: 5px 0 5px 20px !important;
        background: #f8fafc !important;
        display: none !important;
        width: 100% !important;
        min-width: unset !important;
    }
    
    .dropdown.active .dropdown-menu {
        display: block !important;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: block;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .timeline::after {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 45px;
        padding-right: 15px;
    }
    
    .timeline-item::after {
        left: 11px;
    }
    
    .right {
        left: 0;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.1rem;
    }
    .hero-subtitle {
        font-size: 1rem;
    }
    .hero-ctas {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    .hero-ctas .btn {
        width: 100%;
        max-width: 300px;
    }
    .countdown {
        flex-wrap: wrap;
        gap: 8px;
    }
    .countdown-number {
        font-size: 1.8rem;
    }
    .track-topics {
        grid-template-columns: 1fr;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* ==========================================================================
   ADVANCED VISUALS & ENTRANCE ANIMATIONS
   ========================================================================== */

/* Fade In Up Keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

@keyframes pulse-glow {
    0% { box-shadow: 0 0 0 0 rgba(4, 107, 210, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(4, 107, 210, 0); }
    100% { box-shadow: 0 0 0 0 rgba(4, 107, 210, 0); }
}

/* Base animation classes */
.animate-fade-in-up {
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.float-animation {
    animation: float 6s ease-in-out infinite;
}

.pulse-animation {
    animation: pulse-glow 2s infinite;
}

/* Hover Accent Cards */
.member-card, .committee-list-item, .tpc-item, .price-card, .track-card, .faq-item, .contact-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.member-card:hover, .committee-list-item:hover, .price-card:hover, .contact-card:hover {
    transform: translateY(-5px) !important;
    box-shadow: 0 20px 40px -15px rgba(4, 107, 210, 0.15) !important;
    border-color: var(--primary) !important;
}

.tpc-item:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 10px 20px -10px rgba(4, 107, 210, 0.12) !important;
    border-color: var(--primary) !important;
    background: #f8fafc !important;
}

.track-card:hover {
    transform: translateY(-6px) !important;
    box-shadow: 0 20px 45px -15px rgba(4, 107, 210, 0.18) !important;
    border-color: var(--primary) !important;
}

.faq-item:hover {
    border-color: var(--primary) !important;
}

/* Timeline specific enhancements */
.timeline-item::after {
    transition: transform 0.3s ease;
}
.timeline-item:hover::after {
    transform: scale(1.3);
}

/* Hero Section Enhancements */
.hero-section {
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 80% 20%, rgba(4, 107, 210, 0.15) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

/* Buttons style enhancement */
.btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.5s ease-out;
}
.btn:hover::after {
    transform: translate(-50%, -50%) scale(1);
}
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(4, 107, 210, 0.3);
}

/* Page Header Banner styling */
.page-header-banner {
    position: relative;
    background-image: linear-gradient(rgba(7, 30, 61, 0.85), rgba(7, 30, 61, 0.9)), url('../images/hero_bg.png');
    background-size: cover;
    background-position: center;
    padding: 130px 0 70px 0;
    text-align: center;
    color: #ffffff;
    margin-bottom: 40px;
    border-bottom: 3px solid var(--primary);
    overflow: hidden;
}

.page-header-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 50% 50%, rgba(0, 82, 204, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.page-header-banner h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #ffffff !important;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
    font-family: var(--font-heading);
    text-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.page-header-banner .breadcrumbs {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    font-family: var(--font-body);
    font-weight: 500;
}

.page-header-banner .breadcrumbs a {
    color: rgba(255, 255, 255, 0.85);
    transition: color 0.2s;
}

.page-header-banner .breadcrumbs a:hover {
    color: #ffffff;
    text-decoration: underline;
}

.page-header-banner .breadcrumbs span {
    margin: 0 8px;
    color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   ADVANCED VISUAL EFFECTS & SHADOW GLOWS
   ========================================================================== */
.timeline::after {
    background: linear-gradient(to bottom, var(--primary) 0%, var(--accent) 50%, var(--primary) 100%) !important;
    width: 4px !important;
    margin-left: -2px !important;
    box-shadow: 0 0 10px rgba(4, 107, 210, 0.2);
}

.timeline-item::after {
    width: 20px !important;
    height: 20px !important;
    border: 4px solid var(--primary) !important;
    top: 23px !important;
    box-shadow: 0 0 12px rgba(4, 107, 210, 0.4);
    z-index: 2;
}

.timeline-item.right::after {
    left: -10px !important;
}

.timeline-item.left::after {
    right: -10px !important;
}

.timeline-content {
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.timeline-content:hover {
    border-color: var(--primary) !important;
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-soft) !important;
}

.faq-item {
    border-left: 4px solid transparent !important;
    transition: all 0.3s ease !important;
}

.faq-item:hover {
    border-color: var(--primary) !important;
    box-shadow: var(--shadow-soft) !important;
}

.faq-item[open] {
    border-left-color: var(--primary) !important;
    border-color: var(--primary) !important;
    box-shadow: var(--shadow-soft) !important;
}

input#tpcSearch {
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
}

input#tpcSearch:focus {
    outline: none !important;
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 4px rgba(4, 107, 210, 0.15), var(--shadow-soft) !important;
}