/* ==========================================================================
   CSS Variables & Resets - Professional Light Theme
   ========================================================================== */
:root {
    /* Color Palette - Navy & Gold */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --navy-blue: #0B1B3D;
    --navy-blue-light: #1A3668;
    --text-primary: #333333;
    --text-secondary: #666666;
    --gold-primary: #B8974D;
    --gold-light: #D4AF37;
    
    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    
    /* Layout */
    --container-width: 1140px;
    --section-spacing: 90px;
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 40px rgba(11, 27, 61, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--navy-blue);
    font-weight: 700;
}

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

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    transition: var(--transition-smooth);
    background: #171929;
    box-shadow: var(--shadow-sm);
}

.navbar.scrolled {
    padding: 15px 0;
    box-shadow: var(--shadow-md);
    background: #10121d;
}

.navbar .container {
    max-width: 100%;
    padding: 0 4%;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-icon {
    color: #ffffff;
}

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

.logo-text-main {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1;
}

.logo-text-sub {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gold-primary);
    letter-spacing: 1px;
    margin-top: 2px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 40px;
}

nav a {
    color: #ffffff;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: none;
    transition: var(--transition-smooth);
}

nav a:hover {
    color: #00d2ff;
}

.cta-button-nav {
    background: linear-gradient(90deg, #00f0ff 0%, #0080ff 100%);
    color: #000000;
    padding: 12px 28px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition-smooth);
    border: none;
}

.cta-button-nav:hover {
    background: linear-gradient(90deg, #0080ff 0%, #00f0ff 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 240, 255, 0.3);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 140px; /* Increased to push content down from the header */
    padding-bottom: 60px; /* Added padding bottom for spacing */
}

.hero-bg-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.hero-glass-card {
    background: rgba(20, 20, 25, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 30px 40px 40px; /* Reduced vertical padding */
    max-width: 800px;
    width: 100%;
    color: #ffffff;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.hero-glass-card h2 {
    font-family: var(--font-body);
    font-size: 1.3rem;
    font-weight: 500;
    color: #ffffff;
    margin-bottom: 5px;
}

.hero-glass-card h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    margin-bottom: 10px;
    color: #ffffff;
}

.hero-glass-card h3 {
    font-family: var(--font-body);
    font-size: 1.1rem;
    font-weight: 400;
    color: #ffffff;
    margin-bottom: 15px;
}

.hero-glass-card p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 650px;
    margin: 0 auto;
}

.hero-info-grid {
    display: flex;
    gap: 20px;
    margin-top: 25px; /* Added positive gap between boxes */
    z-index: 4;
}

.info-card {
    background: rgba(20, 20, 25, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 15px 30px;
    display: flex;
    align-items: center;
    gap: 15px;
    color: #ffffff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.info-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    opacity: 0.9;
}

.info-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.info-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.7;
}

.info-value {
    font-size: 1.1rem;
    font-weight: 700;
}

.hero-cta-button {
    margin-top: 40px;
    background: linear-gradient(90deg, #00d2ff 0%, #0080ff 100%);
    color: #000000;
    padding: 15px 40px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    border: none;
    box-shadow: 0 4px 15px rgba(0, 240, 255, 0.3);
}

.hero-cta-button:hover {
    background: linear-gradient(90deg, #0080ff 0%, #00d2ff 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 240, 255, 0.4);
}

/* ==========================================================================
   Details & Countdown Section
   ========================================================================== */
.details-section {
    padding: var(--section-spacing) 0;
    background-color: var(--bg-secondary);
}

.details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 24px;
}

.details-text .description {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.countdown-card {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.countdown-card h3 {
    margin-bottom: 30px;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.countdown {
    display: flex;
    justify-content: space-between;
    gap: 15px;
}

.countdown-item {
    display: flex;
    flex-direction: column;
}

.countdown-item .count {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--navy-blue);
    line-height: 1;
}

.countdown-item .label {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-top: 8px;
    font-weight: 500;
}

/* ==========================================================================
   Venue Section
   ========================================================================== */
.venue-section {
    padding: var(--section-spacing) 0;
    background-color: var(--bg-primary);
}

.venue-card {
    display: flex;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.venue-info {
    flex: 1;
    padding: 40px 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.venue-info .section-title {
    margin-bottom: 20px;
    font-size: 2.2rem;
    color: var(--navy-blue);
    font-family: var(--font-heading);
}

.venue-name {
    font-size: 1.6rem;
    margin-bottom: 12px;
    color: var(--navy-blue-light);
}

.venue-address {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 30px;
    line-height: 1.8;
}

.venue-cta {
    margin-top: 10px;
}

.venue-image {
    flex: 1.5;
}

.venue-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.primary-button {
    display: inline-block;
    background-color: var(--gold-primary);
    color: #fff;
    padding: 14px 32px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-smooth);
}

.primary-button:hover {
    background-color: var(--navy-blue);
    transform: translateY(-2px);
}

.venue-image {
    flex: 1.5;
    display: flex;
    align-items: center;
    background-color: #fff;
}

.venue-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--navy-blue);
    color: #fff;
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.organizer-info h3 {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
    font-family: var(--font-body);
}

.org-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 12px;
}

.org-icon {
    stroke: var(--gold-primary);
}

.org-logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
}

.org-logo .edu {
    font-weight: 400;
}

.org-tagline {
    color: var(--gold-primary);
    font-style: italic;
    font-family: var(--font-heading);
    margin-bottom: 40px;
}

.footer-bottom {
    width: 100%;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}

/* ==========================================================================
   New Sections: Speakers, Agenda, Registration
   ========================================================================== */
.section-header {
    margin-bottom: 40px;
}
.section-header.center {
    text-align: center;
}
.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: 10px;
}

/* Speakers */
.speakers-section {
    background-color: var(--bg-primary);
    padding: var(--section-spacing) 0;
}
.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}
.speaker-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    border: 1px solid rgba(0,0,0,0.05);
}
.speaker-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}
.speaker-img-wrapper {
    width: 100%;
    height: 300px;
}
.speaker-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.speaker-info {
    padding: 24px;
    text-align: center;
}
.speaker-info h4 {
    margin-bottom: 5px;
    font-size: 1.2rem;
}
.speaker-info p {
    color: var(--gold-primary);
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Agenda */
.agenda-section {
    background-color: var(--bg-secondary);
    padding: var(--section-spacing) 0;
}
.agenda-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 30px;
}
.agenda-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: rgba(184, 151, 77, 0.3);
}
.agenda-item {
    position: relative;
    padding-bottom: 40px;
}
.agenda-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 5px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--gold-primary);
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px var(--gold-primary);
}
.agenda-time {
    font-weight: 700;
    color: var(--navy-blue);
    font-size: 1.1rem;
    margin-bottom: 8px;
}
.agenda-content {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,0,0,0.03);
}
.agenda-content h4 {
    margin-bottom: 5px;
    font-size: 1.1rem;
}
.agenda-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Registration */
.register-section {
    background-color: var(--bg-secondary);
    padding: var(--section-spacing) 0;
}
.register-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    display: flex;
}
.register-content {
    flex: 1;
    padding: 60px;
    background-color: var(--navy-blue);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.register-content h2 {
    color: #fff;
    font-size: 2.2rem;
    margin-bottom: 20px;
}
.register-content p {
    color: rgba(255,255,255,0.8);
    font-size: 1.1rem;
}
.register-form {
    flex: 1;
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.form-group {
    margin-bottom: 20px;
}
.form-group input {
    width: 100%;
    padding: 15px 20px;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-smooth);
}
.form-group input:focus {
    outline: none;
    border-color: var(--gold-primary);
    box-shadow: 0 0 0 3px rgba(184, 151, 77, 0.1);
}
.submit-btn {
    width: 100%;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    margin-top: 10px;
}

/* ==========================================================================
   Animations
   ========================================================================== */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.fade-in-delay {
    opacity: 0;
    transform: translateY(15px);
    animation: fadeInUp 0.8s ease forwards;
}

.hero .fade-in-delay:nth-child(1) { animation-delay: 0.1s; }
.hero .fade-in-delay:nth-child(2) { animation-delay: 0.2s; }
.hero .fade-in-delay:nth-child(3) { animation-delay: 0.3s; }
.hero .fade-in-delay:nth-child(4) { animation-delay: 0.4s; }

.fade-in-delay-long {
    opacity: 0;
    animation: fadeIn 1.2s ease forwards;
    animation-delay: 0.6s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 992px) {
    .details-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .venue-card, .register-card {
        flex-direction: column;
    }
    
    .register-content, .register-form {
        padding: 40px 30px;
    }
    
    .venue-image {
        min-height: 300px;
    }
}

@media (max-width: 768px) {
    .nav-content {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    .hero {
        padding-top: 260px;
    }
    
    .hero-glass-card {
        padding: 20px 20px 30px;
    }
    
    .hero-info-grid {
        flex-direction: column;
        width: 100%;
        align-items: stretch;
    }
    
    .info-card {
        width: 100%;
        max-width: 100%;
    }

    .countdown {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
    
    .venue-info {
        padding: 40px 20px;
    }
}

@media (max-width: 480px) {
    .countdown-item .count {
        font-size: 1.8rem;
    }
    
    nav ul {
        gap: 10px;
        font-size: 0.9rem;
    }
    
    .hero-glass-card h1 {
        font-size: 2.2rem;
    }
    
    .hero-glass-card h2 {
        font-size: 1.1rem;
    }
    
    .hero-glass-card h3 {
        font-size: 0.95rem;
    }
    
    .cta-button-nav {
        width: 100%;
        text-align: center;
    }
    
    .info-card {
        flex-direction: column;
        text-align: center;
        gap: 8px;
        padding: 15px;
    }
    
    .info-text {
        align-items: center;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}

/* ==========================================================================
   Who Should Join Us Section
   ========================================================================== */
.who-should-join {
    padding: var(--section-spacing) 0;
    background-color: #fafbfc;
}

.who-should-join .section-title {
    color: var(--navy-blue);
    margin-bottom: 10px;
}

.who-should-join .section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 50px;
}

.target-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.target-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    height: 350px;
}

.target-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.target-card:hover .target-img {
    transform: scale(1.05);
}

.target-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60%;
    background: linear-gradient(to top, rgba(25, 27, 42, 0.95) 0%, rgba(25, 27, 42, 0.6) 50%, transparent 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding-bottom: 30px;
    text-align: center;
}

.target-icon-box {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

.target-icon-box.icon-cyan {
    color: #00d2ff;
}

.target-icon-box.icon-gold {
    color: #ffd700;
}

.target-overlay h4 {
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
    padding: 0 20px;
}

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

/* ==========================================================================
   Highlights Section
   ========================================================================== */
.highlights-section {
    padding: var(--section-spacing) 0;
    background-color: #ffffff;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.highlight-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    height: 400px;
}

.highlight-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.highlight-card:hover .highlight-img {
    transform: scale(1.05);
}

.highlight-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60%;
    background: linear-gradient(to top, rgba(20, 20, 30, 0.95) 0%, rgba(20, 20, 30, 0.75) 45%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 30px;
}

.highlight-title-row {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 12px;
}

.highlight-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 0;
    flex-shrink: 0;
}

.highlight-title-row h4 {
    color: #ffffff;
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0;
}

.highlight-overlay p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

@media (max-width: 992px) {
    .highlights-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* ==========================================================================
   Footer Section
   ========================================================================== */
.footer {
    background-color: #10121d;
    color: #a0a5b5;
    padding: 60px 0 20px;
    font-size: 0.95rem;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    color: #ffffff;
}

.footer-about p {
    margin-bottom: 15px;
    line-height: 1.6;
}

.text-cyan {
    color: #00d2ff;
    text-decoration: none;
    font-weight: 500;
}

.footer-heading {
    color: #ffffff;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 25px;
}

.contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
    line-height: 1.5;
}

.contact-icon {
    color: #ffd700;
    flex-shrink: 0;
    margin-top: 3px;
}

.footer-map iframe {
    width: 100%;
    height: 220px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.footer-bottom-bar {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.social-icons {
    display: flex;
    gap: 12px;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    color: #ffffff;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background-color: #00d2ff;
    border-color: #00d2ff;
    color: #000;
}

.social-icons svg {
    width: 16px;
    height: 16px;
}

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

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .footer-bottom-bar {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}