/* ===========================
   ICNGIS 2026 Conference Website
   Main Stylesheet
   =========================== */

/* CSS Variables */

:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --secondary: #7c3aed;
    --accent: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --background: #f8fafc;
    --surface: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

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

/* ===========================
   Header & Navigation
   =========================== */
.header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s ease;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary);
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: translateY(-2px);
}

.logo i {
    font-size: 2rem;
}

.navbar {
    display: flex;
}

.navbar ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.navbar a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.navbar a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.navbar a:hover::after {
    width: 100%;
}

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

/* ===========================
   Hero Section
   =========================== */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 120px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255,255,255,0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 60 60"><path d="M0 0h60v60H0z" fill="none"/><path d="M30 5a25 25 0 1 1 0 50 25 25 0 0 1 0-50z" fill="rgba(255,255,255,0.02)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero h2 {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 1rem;
    letter-spacing: 2px;
    opacity: 0.95;
}

.hero .tagline {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.sponsors-section {
    margin: 2rem 0;
}

.sponsors-label {
    font-weight: 600;
    margin-bottom: 1rem;
}


.sponsors {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    zoom: 40% !important;
}
.sponsor-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    /* padding: 0.75rem 1.5rem; */
    /* border-radius: 50px; */
    backdrop-filter: blur(10px);
    /* border: 1px solid rgba(255, 255, 255, 0.2); */
}

.sponsor-badge i {
    font-size: 1.25rem;
}

.sponsor-badge span {
    font-weight: 600;
}

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

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: white;
    color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.15);
    border-color: white;
}

/* ===========================
   Sections
   =========================== */
.section {
    padding: 80px 20px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    padding-bottom: 1.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

/* Theme Section */
.theme-section {
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
}

.theme-box {
    background: var(--surface);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border-left: 5px solid var(--primary);
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.theme-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.theme-box h3 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.theme-box p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
}

/* About Section */
.about-section {
    background: var(--surface);
}

.about-content {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.about-content p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

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

.highlight-card {
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border-top: 3px solid var(--primary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.highlight-card i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.highlight-card h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.highlight-card p {
    color: var(--text-secondary);
}

/* RIT Section */
.rit-section {
    background: var(--background);
}

.rit-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.rit-text h3 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.rit-text p {
    margin-bottom: 1rem;
}

.rit-features {
    list-style: none;
    margin-top: 2rem;
}

.rit-features li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.rit-features i {
    color: var(--success);
    font-size: 1.25rem;
}

.rit-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.stat-box {
    background: var(--surface);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-md);
    border-top: 3px solid var(--secondary);
}

.stat-box h4 {
    color: var(--secondary);
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.stat-box p {
    color: var(--text-secondary);
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
}

.timeline-item {
    margin-bottom: 3rem;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    margin-left: 0;
    text-align: right;
    padding-right: 3rem;
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    text-align: left;
    padding-left: 3rem;
}

.timeline-content {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 2rem;
    width: 15px;
    height: 15px;
    background: white;
    border: 3px solid var(--primary);
    border-radius: 50%;
    left: 50%;
    transform: translateX(-50%);
}

.timeline-item:odd .timeline-content::after {
    content: '';
    position: absolute;
    right: -1.5rem;
    top: 2rem;
    width: 15px;
    height: 3px;
    background: var(--primary);
}

.timeline-item:even .timeline-content::after {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 2rem;
    width: 15px;
    height: 3px;
    background: var(--primary);
}

.timeline-date {
    color: var(--primary);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.timeline-event {
    color: var(--text-primary);
    font-weight: 600;
}

/* Committee Section */
.committee-section {
    background: var(--surface);
}

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

.committee-card {
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s ease;
}

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

.committee-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2.5rem;
}

.committee-card h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.committee-title {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

/* Contact Section */
.contact-section {
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
}

.contact-content {
    max-width: 1000px;
    margin: 0 auto;
}

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

.contact-card {
    background: var(--surface);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    text-align: center;
    border-top: 3px solid var(--accent);
    transition: transform 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
}

.contact-card i {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.contact-card h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.contact-card p {
    color: var(--text-secondary);
}

.contact-card a {
    color: var(--primary);
    font-weight: 600;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    color: white;
    padding: 3rem 20px 1rem;
}

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

.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom p {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}




/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
    .navbar {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        box-shadow: var(--shadow-md);
    }

    .navbar.active {
        display: flex;
    }

    .navbar ul {
        flex-direction: column;
        gap: 0;
        padding: 1rem 0;
    }

    .navbar a {
        display: block;
        padding: 1rem 1.5rem;
        border-bottom: 1px solid var(--border);
    }

    .menu-toggle {
        display: block;
    }

    .hero {
        padding: 80px 20px;
        min-height: auto;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .sponsors {
        flex-direction: column;
        gap: 1rem;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 80px !important;
        margin-left: 0 !important;
        text-align: left !important;
    }

    .timeline-item:nth-child(odd) {
        padding-right: 0;
    }

    .theme-box {
        padding: 1.5rem;
    }

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

    .rit-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }

    .section {
        padding: 60px 20px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5rem;
    }

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

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

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

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

   
}