.track-link-btn {
    background: #fff !important;
    color: #1a1a1a !important;
    border-radius: 10px !important;
    padding: 0.75rem 1.5rem !important;
    font-weight: 600;
    font-size: 1.1rem;
    display: inline-block;
    margin-top: 1.2rem;
    text-align: center;
    text-decoration: none;
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
    transition: all 0.2s cubic-bezier(.4,0,.2,1);
    cursor: pointer;
}

.track-link-btn:hover, .track-link-btn:focus {
    background: #fff !important;
    color: #1a1a1a !important;
    box-shadow: 0 4px 16px rgba(0,0,0,0.13);
    outline: none;
}
:root {
    /* Light Mode Defaults */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --border-light: #e9ecef;
    --shadow: 0 2px 10px rgba(0,0,0,0.08);
    --shadow-hover: 0 4px 20px rgba(0,0,0,0.12);
    
    /* Dark Mode Overrides */
    --bg-primary-dark: #121212;
    --bg-secondary-dark: #1e1e1e;
    --text-primary-dark: #ffffff;
    --text-secondary-dark: #b0b0b0;
    --border-color-dark: #333333;
    --shadow-dark: 0 2px 10px rgba(0,0,0,0.3);
    --shadow-hover-dark: 0 4px 20px rgba(0,0,0,0.4);
}

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

body.light-mode {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --shadow: 0 2px 10px rgba(0,0,0,0.08);
    --shadow-hover: 0 4px 20px rgba(0,0,0,0.12);
    color: var(--text-primary);
    background: var(--bg-primary);
}

body.dark-mode {
    --bg-primary: var(--bg-primary-dark);
    --bg-secondary: var(--bg-secondary-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --border-color: var(--border-color-dark);
    --shadow: var(--shadow-dark);
    --shadow-hover: var(--shadow-hover-dark);
    color: var(--text-primary);
    background: var(--bg-primary);
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 5.5rem;
    right: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 1001;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.theme-toggle:hover {
    box-shadow: var(--shadow-hover);
    transform: scale(1.08);
}

.theme-toggle i {
    font-size: 1.1rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 2000;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    pointer-events: auto;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-year {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-left: 0.2rem;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    position: relative;
}

/* Ensure header action links are clickable even when sections overlap */
.header .auth-buttons a,
.header .nav-link,
.header .btn {
    pointer-events: auto;
}

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

.auth-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn {
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

.btn-primary:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-1px);
    background: var(--text-primary);
    color: var(--bg-primary);
}

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

.btn-outline:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.btn-login {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
    padding: 0.5rem 1rem;
    /* enable hardware-accelerated transform for smooth animation */
    will-change: transform, box-shadow, background-color, color;
    transition: transform 180ms ease, box-shadow 180ms ease, background-color 220ms ease, color 220ms ease;
}

.btn-login:hover,
.btn-login:focus {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 22px rgba(0,0,0,0.35);
}

.btn-login:active {
    transform: translateY(-1px) scale(0.998);
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

/* Improve keyboard visibility */
.btn-login:focus-visible {
    outline: 3px solid rgba(59,130,246,0.18);
    outline-offset: 3px;
}

    /* Logout button: black & white theme */
    .btn-logout {
        background: #000;
        color: #fff;
        border-color: #000;
        padding: 0.5rem 0.9rem;
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.25);
    }

    .btn-logout:hover {
        background: #111;
        color: #fff;
        box-shadow: 0 6px 18px rgba(0,0,0,0.35);
        transform: translateY(-1px);
    }

    /* In dark-mode, invert to keep contrast */
    body.dark-mode .btn-logout {
        background: #fff;
        color: #000;
        border-color: #fff;
    }

    /* Register button (header CTA) */
    .btn-register {
        background: var(--text-primary);
        color: var(--bg-primary);
        border-color: var(--text-primary);
        padding: 0.5rem 1rem;
        border-radius: 6px;
        font-weight: 600;
    }

    .btn-register:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-1px);
    }

    .btn-sm {
        padding: 0.4rem 1rem;
        font-size: 0.85rem;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
}

/* Hero */
.hero {
    position: relative;
    padding: 120px 0 80px;
    text-align: center;
    background: var(--bg-secondary);
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(0,0,0,0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0,0,0,0.03) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="tech" patternUnits="userSpaceOnUse" width="100" height="100"><path d="M0 0h100v100H0z" fill="none"/><circle cx="20" cy="20" r="2" fill="%23000" opacity="0.02"/><circle cx="80" cy="80" r="1.5" fill="%23000" opacity="0.02"/><line x1="0" y1="50" x2="100" y2="50" stroke="%23000" stroke-width="0.5" opacity="0.01"/><line x1="50" y1="0" x2="50" y2="100" stroke="%23000" stroke-width="0.5" opacity="0.01"/></pattern></defs><rect width="1000" height="1000" fill="url(%23tech)"/></svg>');
    background-size: cover;
    background-position: center;
    z-index: -1;
    opacity: 0.8;
}

body.dark-mode .hero-bg-overlay {
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.03) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="tech-dark" patternUnits="userSpaceOnUse" width="100" height="100"><path d="M0 0h100v100H0z" fill="none"/><circle cx="20" cy="20" r="2" fill="%23fff" opacity="0.03"/><circle cx="80" cy="80" r="1.5" fill="%23fff" opacity="0.03"/><line x1="0" y1="50" x2="100" y2="50" stroke="%23fff" stroke-width="0.5" opacity="0.02"/><line x1="50" y1="0" x2="50" y2="100" stroke="%23fff" stroke-width="0.5" opacity="0.02"/></pattern></defs><rect width="1000" height="1000" fill="url(%23tech-dark)"/></svg>');
}

.hero-badge {
    display: inline-block;
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 1.5rem;
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.hero-action-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.btn-submit {
    font-size: 1rem;
    padding: 0.7rem 1.5rem;
}

.hero-scroll-hint {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    animation: pulse 2s infinite;
    cursor: pointer;
}

.hero-scroll-hint i {
    font-size: 1.2rem;
    margin-top: 0.3rem;
}

/* Sections General */
section {
    padding: 60px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

.about-para {
    margin-bottom: 1rem;
    font-size: 1rem;
}

.about-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.track-link {
    display: inline-block;
    margin-top: 0.8rem;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.track-link:hover {
    color: var(--text-secondary);
}

/* Quick Stats */
.quick-stats {
    background: var(--bg-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    padding: 1.5rem;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.stat-card:hover {
    box-shadow: var(--shadow-hover);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* About */
.about-section {
    background: var(--bg-primary);
}

/* Tracks */
.tracks-section {
    background: var(--bg-secondary);
}

.tracks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.track-card {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.track-card:hover {
    box-shadow: var(--shadow-hover);
}

.track-card i {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    display: block;
}

.track-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

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

/* Speakers */
.speakers-section {
    background: var(--bg-primary);
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.speaker-card {
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
}

.speaker-card:hover {
    box-shadow: var(--shadow-hover);
}

.speaker-avatar {
    width: 60px;
    height: 60px;
    border-radius: 10%;
    background: var(--text-secondary);
    color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-weight: 600;
    font-size: 1.2rem;
}

.speaker-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.speaker-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.2rem;
}

.speaker-card p:first-of-type {
    font-weight: 500;
}

/* Dates */
.dates-section {
    background: var(--bg-secondary);
}

.dates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
}

.date-card {
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    background: var(--bg-primary);
}

.date-card:hover {
    box-shadow: var(--shadow-hover);
}

.date-card h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.date-card span {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Registration */
.registration-section {
    background: var(--bg-primary);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.pricing-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.pricing-card.featured {
    border-color: var(--text-primary);
    box-shadow: var(--shadow);
}

.pricing-header {
    padding: 1.5rem;
    text-align: center;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    min-height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.pricing-header h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.price {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0.5rem 0;
}

.tag {
    display: inline-block;
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: 0.2rem 0.8rem;
    border-radius: 12px;
    font-size: 0.8rem;
    margin-top: 0.5rem;
    height: 26px;
    line-height: 1.6;
}

.pricing-features {
    padding: 1.5rem;
    list-style: none;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.pricing-features li {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.pricing-features i {
    color: var(--text-primary);
    width: 16px;
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.btn-register-fee {
    display: block;
    margin: auto 1.5rem 1.5rem;
    width: calc(100% - 3rem);
    max-width: 160px;
    padding: 0.75rem 1.2rem;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    text-align: center;
    background: var(--text-primary);
    color: var(--bg-primary);
    border: 1px solid var(--text-primary);
    flex-shrink: 0;
}

.btn-register-fee:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    background: var(--text-primary);
    color: var(--bg-primary);
}

.registration-note {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Sponsors */
.sponsors-section {
    background: var(--bg-secondary);
}

.sponsors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.sponsor-card {
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    background: var(--bg-primary);
}

.sponsor-card:hover {
    box-shadow: var(--shadow-hover);
}

.sponsor-card i {
    font-size: 2.5rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    display: block;
}

.sponsor-card p {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* Committees */
.committees-section {
    background: var(--bg-primary);
}

.committees-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.committee-card {
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
}

.committee-card:hover {
    box-shadow: var(--shadow-hover);
}

.committee-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

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

/* CTA */
.cta-section {
    background: var(--bg-secondary);
    text-align: center;
}

.cta-title {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
}

.cta-subtitle {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: transparent;
    color: var(--text-primary);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h3, .footer-col h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col a {
    color: var(--text-secondary);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: var(--text-primary);
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.contact-info i {
    color: var(--text-primary);
    width: 12px;
}


/* Contact section (not footer) */
.contact-section .contact-info {
    background: var(--bg-primary);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    font-size: 1.2rem;
    color: var(--text-secondary);
    transition: color 0.3s;
}

.social-icons a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

body.dark-mode .footer-bottom {
    border-top-color: var(--border-color-dark);
}

/* Animations */
@keyframes pulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
    .container { padding: 0 1rem; }
    
    .theme-toggle {
        top: 4.5rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }
    
    .theme-toggle i {
        font-size: 1rem;
    }
    
    .header-container { padding: 0.8rem 0; }
    .nav-list { display: none; }
    .mobile-menu-btn { display: block; }
    .auth-buttons { gap: 0.3rem; }
    
    .hero-title { font-size: 2.2rem; }
    .hero-subtitle { font-size: 1.1rem; }
    .hero-meta { gap: 1rem; flex-direction: column; align-items: center; }
    
    .section-title { font-size: 1.8rem; }
    
    .cta-buttons { flex-direction: column; align-items: center; }
    
    .stats-grid, .tracks-grid, .dates-grid, .pricing-cards, .committees-grid, .sponsors-grid, .speakers-grid { 
        grid-template-columns: 1fr; 
    }
    
    .pricing-card {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .about-buttons { flex-direction: column; align-items: center; }
}

/* Neural Network Background */
.neural-network {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.neural-network canvas {
    display: block;
    opacity: 0.6;
    pointer-events: none;
}

body.dark-mode .neural-network canvas {
    opacity: 0.4;
}

/* Update hero-content to be above canvas */
.hero-content {
    position: relative;
    z-index: 1;
}

/* Optional: Make hero background more subtle with neural network */
.hero {
    position: relative;
    padding: 120px 0 80px;
    text-align: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

body.dark-mode .hero {
    background: linear-gradient(135deg, #1e1e1e 0%, #121212 100%);
}

/* === Committee Filter / Buttons === */
.committee-selector {
    margin-bottom: 3rem;
}

.committee-buttons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.committee-btn {
    padding: 1rem 1.3rem;
    font-size: 1.03rem;
    font-weight: 600;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.25s ease;
}

.committee-btn:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.committee-btn.active {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
    box-shadow: 0 4px 14px rgba(0,0,0,0.14);
}

/* === Committee Groups === */
.committee-group {
    margin-bottom: 4rem;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
    display: none;
}

.committee-group.visible {
    opacity: 1;
    transform: translateY(0);
    display: block;
}

.committee-group-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 1.8rem;
    position: relative;
    color: var(--text-primary);
}

.committee-group-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 90px;
    height: 4px;
    background: var(--text-primary);
    border-radius: 2px;
}

/* Make speaker cards look better when focused */
.speakers-grid {
    margin-bottom: 1rem;
}

.speaker-card img {
    border: 3px solid var(--border-color);
    transition: all 0.3s ease;
}

.speaker-card:hover img {
    transform: scale(1.06);
    box-shadow: 0 8px 25px rgba(0,0,0,0.18);
}

/* ===================== DETAILED TRACKS STYLING ===================== */
.detailed-tracks {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
}

.track-card.detailed {
    background: #1a1a1a;
    border: 1px solid #333333;
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: var(--shadow);
    text-align: center;
    color: #ffffff;
}

.track-card.detailed:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.track-icon-wrapper {
    width: 60px;
    height: 60px;
    background: #ffffff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem auto;
    font-size: 1.8rem;
    color: #1a1a1a;
}

.track-card.detailed h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.track-description {
    font-size: 0.95rem;
    color: #b0b0b0;
    line-height: 1.6;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.track-keywords {
    font-size: 0.85rem;
    color: #b0b0b0;
    background: #2a2a2a;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.track-keywords strong {
    color: #ffffff;
}

.track-submit-btn {
    display: inline-block;
    background: #ffffff !important;
    color: #1a1a1a !important;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.track-submit-btn:hover {
    background: #ffffff !important;
    color: #1a1a1a !important;
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* ===================== ABOUT PAGE STYLING ===================== */

/* About Overview Section */
.about-overview {
    padding: 4rem 0;
}

.overview-content {
    max-width: 900px;
    margin: 0 auto;
}

.overview-para {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    text-align: justify;
}

/* Mission & Vision Section */
.mission-vision {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.mv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.mv-card {
    background: var(--bg-primary);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.mv-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.mv-icon {
    font-size: 3rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.mv-card h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1.2rem;
}

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

/* Key Highlights Section */
.key-highlights {
    padding: 4rem 0;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.highlight-card {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

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

.highlight-number {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.highlight-card h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
}

.highlight-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Core Values Section */
.core-values {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.value-item {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--text-primary);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.value-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-hover);
}

.value-item h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
}

.value-item p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Conference Themes Section */
.conference-themes {
    padding: 4rem 0;
}

.themes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.theme-card {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.theme-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.theme-icon {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.theme-card h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.theme-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===================== CONTACT SECTION STYLING ===================== */

.contact-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-form {
    background: var(--bg-primary);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--text-primary);
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.contact-form button {
    width: 100%;
    margin-top: 1rem;
}

.contact-info h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.info-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

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

.info-icon {
    font-size: 1.5rem;
    color: var(--text-primary);
    min-width: 40px;
}

.info-content h4 {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
    font-weight: 600;
}

.info-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .contact-form,
    .contact-info {
        padding: 2rem;
    }
}

/* ===================== DATES PAGE STYLING ===================== */

/* Dates Section */
.dates-section {
    padding: 4rem 0;
}

.dates-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 2rem;
    margin-bottom: 2.5rem;
    align-items: start;
}

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

.timeline-marker {
    width: 80px;
    height: 80px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--text-primary);
    flex-shrink: 0;
}

.timeline-content h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.date-highlight {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.date-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Fees Section */
.fees-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.fees-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.fee-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
}

.fee-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.fee-card.featured {
    border: 2px solid var(--text-primary);
    transform: scale(1.05);
}

.fee-badge {
    position: absolute;
    top: -12px;
    left: 20px;
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.fee-category h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    margin-top: 0.5rem;
}

.fee-amount {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.fee-benefits {
    list-style: none;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.fee-benefits li {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.fee-benefits i {
    color: var(--text-primary);
}

.fee-card .btn {
    width: 100%;
}

.fees-note {
    margin-top: 3rem;
    padding: 1.5rem;
    background: var(--bg-primary);
    border-radius: 8px;
    border-left: 4px solid var(--text-primary);
    text-align: center;
}

.fees-note p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .timeline-item {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .timeline-marker {
        width: 60px;
        height: 60px;
        font-size: 1.4rem;
    }

    .fee-card.featured {
        transform: scale(1);
    }

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

.contact-info {
    padding: 2rem;
}

/* Badge Styling */
.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: capitalize;
    border: 1px solid transparent;
}

.badge-success {
    background-color: #e8f5e9;
    color: #1b5e20;
    border-color: #4caf50;
}

.badge-danger {
    background-color: #ffebee;
    color: #b71c1c;
    border-color: #f44336;
}

.badge-warning {
    background-color: #fff3e0;
    color: #e65100;
    border-color: #ff9800;
}

.badge-info {
    background-color: #e3f2fd;
    color: #01579b;
    border-color: #2196f3;
}

/* Role Badge Styling */
.role-badge,
.badge-role {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px solid transparent;
}

.role-badge.role-admin,
.badge-role.role-admin {
    background-color: #e3f2fd;
    border-color: #1976d2;
    color: #0d47a1;
}

.role-badge.role-committee,
.badge-role.role-committee {
    background-color: #fef3c7;
    border-color: #d97706;
    color: #92400e;
}

.role-badge.role-user,
.badge-role.role-user {
    background-color: #f0fdf4;
    border-color: #10b981;
    color: #065f46;
}