/* ========================================
   AWS Community Day Argentina 2025 - Styles
   ======================================== */

/* ========================================
   CSS Custom Properties (Variables)
   ======================================== */

:root {
    /* AWS Colors */
    --aws-orange: #FF9900;
    --aws-dark-blue: #232F3E;
    --aws-light-blue: #4B8BBE;
    --aws-squid-ink: #161E2D;
    
    /* Primary Colors */
    --primary: #FF9900;
    --primary-dark: #E68900;
    --primary-light: #FFB340;
    
    /* Secondary Colors */
    --secondary: #232F3E;
    --secondary-light: #3A4A5C;
    --secondary-dark: #1A2332;
    
    /* Accent Colors */
    --accent-blue: #4B8BBE;
    --accent-cyan: #00D4FF;
    --accent-purple: #8B5CF6;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Status Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-secondary: 'Space Grotesk', system-ui, sans-serif;
    
    /* Font Sizes */
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.25rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 1.875rem;
    --fs-4xl: 2.25rem;
    --fs-5xl: 3rem;
    --fs-6xl: 3.75rem;
    --fs-7xl: 4.5rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3rem;
    --spacing-4xl: 4rem;
    --spacing-5xl: 5rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    --gradient-rainbow: linear-gradient(135deg, var(--primary) 0%, var(--accent-cyan) 50%, var(--accent-purple) 100%);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* ========================================
   Base Styles
   ======================================== */

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

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

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
    padding: 1rem 0;
    background: rgba(35, 47, 62, 0.95);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar.scrolled {
    padding: 0.5rem 0;
    background: rgba(35, 47, 62, 0.98);
    box-shadow: var(--shadow-lg);
}

.navbar-brand {
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--white) !important;
    text-decoration: none;
    font-family: var(--font-secondary);
}

.logo-img {
    height: 50px;
    width: auto;
    transition: all var(--transition-normal);
}

.navbar.scrolled .logo-img {
    height: 40px;
}

.navbar-nav .nav-link {
    color: var(--white) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: all var(--transition-normal);
    position: relative;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 80%;
}

.navbar-nav .nav-link:hover {
    color: var(--primary) !important;
}

.navbar-toggler {
    border: none;
    padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
    box-shadow: none;
}

/* ========================================
   Hero Section
   ======================================== */

.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    background-image: url('../images/fondo/photo1.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(135deg, rgba(35, 47, 62, 0.85) 0%, rgba(26, 35, 50, 0.9) 100%),
        radial-gradient(ellipse at center, rgba(255, 153, 0, 0.1) 0%, transparent 70%);
    z-index: -1;
}

.hero-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.shape {
    position: absolute;
    background: var(--primary);
    border-radius: var(--radius-full);
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    right: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 60px;
    height: 60px;
    top: 60%;
    right: 20%;
    animation-delay: 2s;
}

.shape-3 {
    width: 80px;
    height: 80px;
    bottom: 30%;
    left: 15%;
    animation-delay: 4s;
}

.shape-4 {
    width: 120px;
    height: 120px;
    top: 10%;
    left: 5%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    color: var(--white);
    z-index: 1;
}

.hero-badge .badge {
    font-size: var(--fs-sm);
    font-weight: 600;
    background: var(--gradient-primary);
    border: none;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(255, 153, 0, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white !important;
    position: relative;
    z-index: 10;
}

.hero-title {
    font-size: clamp(var(--fs-4xl), 5vw, var(--fs-7xl));
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-family: var(--font-secondary);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.text-gradient {
    background: linear-gradient(135deg, #FFD700 0%, #FF9900 50%, #FFB340 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

/* Mejorar legibilidad manteniendo el gradiente brillante */
@media (max-width: 767.98px) {
    .text-gradient {
        background: linear-gradient(135deg, #FFD700 0%, #FF9900 50%, #FFB340 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.6));
    }
}

.hero-subtitle {
    font-size: var(--fs-xl);
    line-height: 1.6;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--fs-3xl);
    font-weight: 700;
    color: var(--primary);
    display: block;
    font-family: var(--font-secondary);
}

.stat-label {
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.hero-location {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--fs-lg);
    font-weight: 500;
}

.hero-location i {
    color: var(--primary);
}

/* ========================================
   Countdown Timer
   ======================================== */

.countdown-container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    padding: 2rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.countdown-container h3 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: var(--fs-2xl);
    font-family: var(--font-secondary);
}

.countdown-timer {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.time-unit {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 1rem;
    min-width: 70px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.time-value {
    display: block;
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--primary);
    font-family: var(--font-secondary);
}

.time-label {
    font-size: var(--fs-xs);
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ========================================
   Scroll Indicator
   ======================================== */

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.scroll-down {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    position: relative;
    cursor: pointer;
}

.scroll-down span {
    position: absolute;
    top: 8px;
    left: 50%;
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: var(--radius-sm);
    animation: scroll 2s infinite;
    transform: translateX(-50%);
}

.scroll-down span:nth-child(2) {
    animation-delay: 0.2s;
}

.scroll-down span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes scroll {
    0% { opacity: 0; transform: translateX(-50%) translateY(0); }
    50% { opacity: 1; }
    100% { opacity: 0; transform: translateX(-50%) translateY(20px); }
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    font-weight: 600;
    border-radius: var(--radius-lg);
    padding: 0.75rem 1.5rem;
    transition: all var(--transition-normal);
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-primary);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--fs-lg);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ========================================
   Sections
   ======================================== */

.section-title {
    font-size: clamp(var(--fs-3xl), 4vw, var(--fs-5xl));
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    font-family: var(--font-secondary);
    color: var(--gray-900);
}

.section-subtitle {
    font-size: var(--fs-lg);
    color: var(--gray-600);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   About Section
   ======================================== */

.about-section {
    padding: 5rem 0;
    background: var(--gray-50);
}

.features-list {
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.feature-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--fs-xl);
    flex-shrink: 0;
}

.feature-content h4 {
    font-size: var(--fs-lg);
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

.feature-content p {
    color: var(--gray-600);
    margin: 0;
}

.about-visual {
    position: relative;
}

.video-container {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.logo-container {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%);
    padding: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 16/9;
}

.about-logo {
    max-width: 80%;
    max-height: 80%;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.1));
    transition: all var(--transition-normal);
}

.logo-container:hover .about-logo {
    transform: scale(1.05);
}

.video-placeholder {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.video-placeholder:hover {
    transform: scale(1.02);
}

.video-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.video-placeholder span {
    font-size: var(--fs-lg);
    font-weight: 600;
}

.stats-cards {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.stat-card {
    flex: 1;
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.stat-card h3 {
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
    font-family: var(--font-secondary);
}

.stat-card p {
    color: var(--gray-600);
    margin: 0;
    font-size: var(--fs-sm);
}

/* ========================================
   Speakers Section
   ======================================== */

.speakers-section {
    padding: 5rem 0;
    background: var(--white);
}

.coming-soon-container {
    text-align: center;
    padding: 3rem 0;
}

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

.mystery-speaker {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--gray-200) 0%, var(--gray-300) 100%);
    border-radius: 50%;
    position: relative;
    overflow: hidden;
    animation: pulse 2s infinite;
}

.mystery-speaker::before {
    content: '?';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--fs-4xl);
    font-weight: 700;
    color: var(--white);
    font-family: var(--font-secondary);
}

.mystery-speaker:nth-child(even) {
    animation-delay: 0.5s;
}

.coming-soon-content h3 {
    font-size: var(--fs-3xl);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--gray-900);
    font-family: var(--font-secondary);
}

.coming-soon-content p {
    font-size: var(--fs-lg);
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.notify-me {
    background: var(--gray-50);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    max-width: 400px;
    margin: 0 auto;
}

.notify-me p {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

/* ========================================
   Sponsors Section
   ======================================== */

.sponsors-section {
    padding: 5rem 0;
    background: var(--white);
}

.sponsors-coming-soon {
    text-align: center;
    padding: 2rem 0;
}

.sponsor-placeholder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.sponsor-placeholder {
    aspect-ratio: 16/9;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--gray-300);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all var(--transition-normal);
}

.sponsor-placeholder::before {
    content: 'Logo';
    color: var(--gray-400);
    font-weight: 600;
    font-size: var(--fs-lg);
}

.sponsor-placeholder.platinum {
    border-color: #E5E7EB;
    background: linear-gradient(135deg, #F3F4F6 0%, #E5E7EB 100%);
}

.sponsor-placeholder.gold {
    border-color: #FCD34D;
    background: linear-gradient(135deg, #FEF3C7 0%, #FCD34D 100%);
}

.sponsor-placeholder.silver {
    border-color: #D1D5DB;
    background: linear-gradient(135deg, #F9FAFB 0%, #D1D5DB 100%);
}

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

.sponsor-cta {
    background: var(--gray-50);
    padding: 3rem 2rem;
    border-radius: var(--radius-2xl);
    border: 1px solid var(--gray-200);
    max-width: 600px;
    margin: 0 auto;
}

.sponsor-cta h3 {
    font-size: var(--fs-2xl);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--gray-900);
    font-family: var(--font-secondary);
}

.sponsor-cta p {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

/* ========================================
   Venue Section
   ======================================== */

.venue-section {
    padding: 5rem 0;
    background: var(--gray-50);
}

.venue-details {
    margin-top: 2rem;
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.detail-item i {
    font-size: var(--fs-xl);
    color: var(--primary);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.detail-item h4 {
    font-size: var(--fs-lg);
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

.detail-item p {
    color: var(--gray-600);
    margin: 0;
}

.venue-map {
    position: relative;
}

.map-placeholder {
    aspect-ratio: 16/12;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border-radius: var(--radius-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--gray-300);
    color: var(--gray-500);
}

.map-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.map-placeholder p {
    font-size: var(--fs-lg);
    font-weight: 600;
    margin: 0;
}

/* ========================================
   Registration Section
   ======================================== */

.register-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.register-section .section-title {
    color: var(--white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.register-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    font-size: var(--fs-lg);
    font-weight: 400;
}

.register-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.1) 100%),
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="rgba(255,153,0,0.1)"/></svg>');
    background-size: 100px 100px;
    animation: float 20s linear infinite;
}

.registration-container {
    max-width: 500px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.registration-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.card-header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 2rem;
    text-align: center;
}

.card-header h3 {
    font-size: var(--fs-2xl);
    font-weight: 700;
    margin-bottom: 1rem;
    font-family: var(--font-secondary);
}

.price {
    font-size: var(--fs-4xl);
    font-weight: 800;
    font-family: var(--font-secondary);
}

.card-body {
    padding: 2rem;
}

.benefits-list {
    list-style: none;
    margin-bottom: 2rem;
}

.benefits-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.benefits-list i {
    color: var(--success);
    font-size: var(--fs-sm);
}

.registration-status {
    margin-bottom: 1rem;
}

.available-spots {
    color: var(--primary);
    font-weight: 600;
    font-size: var(--fs-lg);
}

.card-footer {
    padding: 2rem;
    border-top: 1px solid var(--gray-200);
    text-align: center;
}

.registration-note {
    margin-top: 1rem;
    font-size: var(--fs-sm);
    color: var(--gray-500);
    margin-bottom: 0;
}

/* ========================================
   Newsletter Section
   ======================================== */

.newsletter-section {
    padding: 3rem 0;
    background: var(--white);
}

.newsletter-section h3 {
    font-size: var(--fs-2xl);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--gray-900);
    font-family: var(--font-secondary);
}

.newsletter-section p {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.newsletter-form {
    max-width: 400px;
    margin: 0 auto;
}

.newsletter-form .input-group {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.newsletter-form .form-control {
    border: 1px solid var(--gray-300);
    padding: 0.75rem 1rem;
    font-size: var(--fs-base);
    border-right: none;
}

.newsletter-form .form-control:focus {
    box-shadow: none;
    border-color: var(--primary);
}

.newsletter-form .btn {
    border-radius: 0;
    padding: 0.75rem 1.5rem;
}

/* ========================================
   Footer
   ======================================== */

.footer-section {
    background: var(--secondary);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-brand {
    margin-bottom: 2rem;
}

.footer-logo {
    height: 50px;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-section h5 {
    font-size: var(--fs-lg);
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--white);
    font-family: var(--font-secondary);
}

.footer-links {
    list-style: none;
    padding: 0;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-normal);
}

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

.social-links {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.social-links a {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--fs-lg);
    transition: all var(--transition-normal);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.7);
}

.contact-info i {
    color: var(--primary);
    width: 20px;
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.2);
    margin: 2rem 0 1rem;
}

.copyright,
.aws-disclaimer {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--fs-sm);
    margin: 0;
}

/* ========================================
   Gallery Section
   ======================================== */

.gallery-section {
    padding: 5rem 0;
    background: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.gallery-item {
    position: relative;
    aspect-ratio: 4/3;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.gallery-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all var(--transition-normal);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-normal);
}

.gallery-overlay i {
    color: var(--white);
    font-size: 2rem;
    transform: scale(0.8);
    transition: all var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-item:hover .gallery-overlay i {
    transform: scale(1);
}

.gallery-item:hover .gallery-image {
    transform: scale(1.1);
}

.gallery-caption {
    color: var(--gray-600);
    font-size: var(--fs-lg);
    font-style: italic;
    margin-top: 2rem;
}

/* Gallery responsive */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1rem;
    }
    
    .gallery-item {
        aspect-ratio: 1;
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* ========================================
   User Groups Section
   ======================================== */

.user-groups-section {
    padding: 5rem 0;
    background: var(--white);
    position: relative;
}

.user-groups-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    opacity: 0.5;
}

.user-groups-section .container {
    position: relative;
    z-index: 1;
}

.user-groups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.user-group-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.user-group-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.user-group-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.group-logo {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    background: var(--gray-50);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: 3px solid var(--gray-200);
    transition: all var(--transition-normal);
}

.user-group-card:hover .group-logo {
    border-color: var(--primary);
    transform: scale(1.05);
}

.group-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 1rem;
    transition: all var(--transition-normal);
}

.user-group-card:hover .group-image {
    transform: scale(1.1);
}

.group-info h4 {
    font-size: var(--fs-lg);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
    font-family: var(--font-secondary);
}

.group-info p {
    color: var(--gray-600);
    font-size: var(--fs-sm);
    margin: 0;
    line-height: 1.5;
}

.groups-cta {
    color: var(--gray-700);
    font-size: var(--fs-lg);
    font-weight: 500;
    margin-bottom: 1rem;
}

.groups-cta i {
    color: var(--primary);
}

.community-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.community-links .btn {
    border-radius: var(--radius-lg);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.community-links .btn:hover {
    transform: translateY(-2px);
}

/* Responsive Design for User Groups */
@media (max-width: 768px) {
    .user-groups-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .user-group-card {
        padding: 1.5rem;
    }
    
    .group-logo {
        width: 100px;
        height: 100px;
    }
    
    .community-links {
        flex-direction: column;
        align-items: center;
    }
    
    .community-links .btn {
        width: 100%;
        max-width: 250px;
    }
}

@media (max-width: 480px) {
    .user-groups-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .user-group-card {
        padding: 1rem;
    }
    
    .group-logo {
        width: 80px;
        height: 80px;
    }
    
    .group-info h4 {
        font-size: var(--fs-base);
    }
    
    .group-info p {
        font-size: var(--fs-xs);
    }
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 991.98px) {
    .hero-stats {
        justify-content: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .countdown-container {
        margin-top: 2rem;
    }
    
    .mystery-speakers {
        gap: 1rem;
    }
    
    .mystery-speaker {
        width: 80px;
        height: 80px;
    }
    
    .mystery-speaker::before {
        font-size: var(--fs-2xl);
    }
    
    .sponsor-placeholder-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
    }
    
    .stats-cards {
        flex-direction: column;
    }
}

@media (max-width: 767.98px) {
    .hero-stats {
        gap: 1.5rem;
        justify-content: center;
        margin-bottom: 2.5rem;
        flex-wrap: wrap;
    }
    
    .stat-item {
        flex: 1;
        min-width: 80px;
        max-width: 120px;
    }
    
    .stat-number {
        font-size: var(--fs-2xl);
        font-weight: 800;
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    }
    
    .stat-label {
        font-size: var(--fs-xs);
        font-weight: 600;
        text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .hero-title {
        text-shadow: 0 3px 6px rgba(0, 0, 0, 0.4);
    }
    
    .hero-subtitle {
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    }
    
    .hero-badge .badge {
        font-size: var(--fs-sm);
        font-weight: 700;
        padding: 0.5rem 1rem;
        background: #FF9900 !important;
        box-shadow: 0 4px 12px rgba(255, 153, 0, 0.4);
        border: 2px solid rgba(255, 255, 255, 0.3);
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        color: white !important;
        position: relative;
        z-index: 10;
    }
    
    .hero-overlay {
        background: 
            linear-gradient(135deg, rgba(35, 47, 62, 0.88) 0%, rgba(26, 35, 50, 0.92) 100%),
            radial-gradient(ellipse at center, rgba(255, 153, 0, 0.1) 0%, transparent 70%);
    }
    
    .countdown-timer {
        gap: 0.5rem;
    }
    
    .time-unit {
        padding: 0.75rem 0.5rem;
        min-width: 60px;
    }
    
    .time-value {
        font-size: var(--fs-xl);
    }
    
    .feature-item {
        padding: 1rem;
    }
    
    .feature-icon {
        width: 40px;
        height: 40px;
        font-size: var(--fs-lg);
    }
    
    .social-links a {
        width: 40px;
        height: 40px;
        font-size: var(--fs-base);
    }
}

@media (max-width: 575.98px) {
    .hero-title {
        font-size: var(--fs-4xl);
        text-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
    }
    
    .hero-subtitle {
        font-size: var(--fs-base);
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
    }
    
    .hero-badge .badge {
        font-size: var(--fs-lg);
        font-weight: 800;
        padding: 1rem 2rem;
        background: #FF9900 !important;
        box-shadow: 0 8px 20px rgba(255, 153, 0, 0.5), 0 0 0 4px rgba(255, 255, 255, 0.2);
        border: 3px solid rgba(255, 255, 255, 0.6);
        text-shadow: 0 3px 6px rgba(0, 0, 0, 0.6);
        border-radius: var(--radius-xl);
        color: white !important;
        position: relative;
        z-index: 100;
        display: inline-block;
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
    }
    
    .hero-overlay {
        background: 
            linear-gradient(135deg, rgba(35, 47, 62, 0.92) 0%, rgba(26, 35, 50, 0.95) 100%),
            radial-gradient(ellipse at center, rgba(255, 153, 0, 0.1) 0%, transparent 70%);
    }
    
    .hero-content {
        color: var(--white);
        background: rgba(0, 0, 0, 0.1);
        padding: 2rem 1rem;
        border-radius: var(--radius-xl);
        backdrop-filter: blur(5px);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .hero-badge {
        background: rgba(255, 153, 0, 0.25);
        padding: 0.75rem;
        border-radius: var(--radius-lg);
        margin-bottom: 1.5rem !important;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        border: 2px solid rgba(255, 255, 255, 0.2);
        position: relative;
        z-index: 50;
    }
    
    .section-title {
        font-size: var(--fs-3xl);
    }
    
    .countdown-container {
        padding: 1.5rem;
    }
    
    .countdown-timer {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .time-unit {
        flex: 1;
        min-width: 70px;
    }
    
    .mystery-speaker {
        width: 70px;
        height: 70px;
    }
    
    .mystery-speaker::before {
        font-size: var(--fs-xl);
    }
    
    .card-header,
    .card-body,
    .card-footer {
        padding: 1.5rem;
    }
    
    .sponsor-cta {
        padding: 2rem 1.5rem;
    }
}

/* Very small devices (small phones) */
@media (max-width: 375px) {
    .hero-badge {
        background: rgba(255, 153, 0, 0.6) !important;
        padding: 1.2rem !important;
        margin-bottom: 2rem !important;
        width: 95% !important;
        max-width: 320px !important;
    }
    
    .hero-badge .badge {
        font-size: 1.2rem !important;
        padding: 1.2rem 2rem !important;
        border: 4px solid rgba(255, 255, 255, 1) !important;
        text-shadow: 0 6px 12px rgba(0, 0, 0, 0.9) !important;
        box-shadow: 0 15px 35px rgba(255, 153, 0, 0.8), 0 0 0 6px rgba(255, 255, 255, 0.4) !important;
        min-height: 3.5rem !important;
        line-height: 1.3 !important;
    }
}

/* ========================================
   CRITICAL FIX for very small screens
   ======================================== */
@media screen and (max-width: 400px) {
    .hero-badge {
        width: 95% !important;
        margin: 0 auto 2rem auto !important;
        padding: 1rem !important;
    }
    
    .hero-badge .badge {
        font-size: 1.2rem !important;
        padding: 1rem 1.5rem !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        line-height: 1.4 !important;
    }
    
    .hero-stats {
        flex-wrap: wrap !important;
        gap: 0.8rem !important;
        padding: 1rem !important;
    }
    
    .stat-item {
        min-width: 70px !important;
        max-width: 90px !important;
    }
    
    .stat-number {
        font-size: 1.6rem !important;
    }
    
    .stat-label {
        font-size: 0.75rem !important;
    }
}

/* ========================================
   Animations & Effects
   ======================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

/* ========================================
   Dark Mode Support (Future Enhancement)
   ======================================== */

@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here in the future */
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .navbar,
    .hero-section,
    .footer-section {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        color: #000;
        background: #fff;
    }
    
    .section-title {
        color: #000;
        font-size: 18pt;
    }
    
    .timeline-item {
        break-inside: avoid;
        margin-bottom: 1rem;
    }
}

/* ========================================
   High Contrast Mode Support
   ======================================== */

@media (prefers-contrast: high) {
    :root {
        --primary: #000;
        --secondary: #fff;
        --gray-600: #000;
        --gray-700: #000;
    }
    
    .btn-primary {
        background: #000;
        color: #fff;
        border: 2px solid #000;
    }
    
    .btn-outline-primary {
        border-color: #000;
        color: #000;
    }
}

/* ========================================
   Reduced Motion Support
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .scroll-down span {
        animation: none;
    }
}

/* ========================================
   Focus Styles for Accessibility
   ======================================== */

*:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.btn:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.nav-link:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ========================================
   Custom Scrollbar
   ======================================== */

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ========================================
   Keynote Speakers Section
   ======================================== */

.keynote-speakers-section {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
    padding: 2rem 0;
    overflow: hidden;
}

.keynote-speakers-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 206, 84, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.keynote-speakers-section .section-title {
    color: #1a1a1a !important;
    font-size: var(--fs-2xl);
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 2;
    font-weight: 700;
}

.keynote-speakers-section .section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: var(--radius-full);
}

.keynote-speakers-section .section-subtitle {
    color: #4a5568 !important;
    font-size: var(--fs-base);
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    font-weight: 500;
}

.keynote-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.1),
        0 4px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 2;
    height: 100%;
}

.keynote-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
}

.keynote-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    text-align: center;
    height: 100%;
}

.keynote-image {
    position: relative;
    margin-bottom: 1rem;
}

.keynote-photo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary);
}

.keynote-badge {
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    border: 2px solid var(--white);
    white-space: nowrap;
}

.keynote-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.keynote-name {
    color: #1a1a1a !important;
    font-size: var(--fs-xl) !important;
    font-weight: 700 !important;
    margin: 0 0 0.5rem 0 !important;
    font-family: 'Space Grotesk', sans-serif !important;
    display: block !important;
    line-height: 1.2 !important;
}

.keynote-title {
    color: var(--primary);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    margin: 0 0 1rem 0;
    font-style: italic;
}

.keynote-description p {
    color: var(--gray-700);
    font-size: var(--fs-sm);
    line-height: 1.6;
    margin: 0 0 1rem 0;
}

.keynote-highlights {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: auto;
}

.keynote-highlights .highlight {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--gray-50);
    padding: 0.5rem;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary);
}

.keynote-highlights .highlight i {
    color: var(--primary);
    font-size: var(--fs-sm);
}

.keynote-highlights .highlight span {
    color: var(--gray-700);
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
}

/* Other Speakers Section */
.other-speakers-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px dashed rgba(59, 130, 246, 0.3);
}

.other-speakers-title {
    color: #1a1a1a;
    font-size: var(--fs-xl);
    font-weight: var(--fw-bold);
    margin-bottom: 0.5rem;
}

.other-speakers-subtitle {
    color: #4a5568;
    font-size: var(--fs-sm);
    margin-bottom: 2rem;
}

.speaker-placeholders {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.speaker-placeholder {
    text-align: center;
    opacity: 0.7;
    transition: all 0.3s ease;
}

.speaker-placeholder:hover {
    opacity: 1;
    transform: translateY(-5px);
}

.placeholder-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gray-200) 0%, var(--gray-300) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.5rem;
    border: 2px dashed var(--gray-400);
}

.placeholder-avatar i {
    color: var(--gray-500);
    font-size: var(--fs-lg);
}

.speaker-placeholder p {
    color: var(--gray-600);
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    margin: 0;
}

.announcement-text {
    color: var(--primary);
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    margin: 0;
}

/* Regular Speakers */
.confirmed-speakers {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.regular-speaker-card {
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(5px);
    transition: all 0.3s ease;
    width: 280px;
    position: relative;
}

.regular-speaker-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #f59e0b 0%, #d97706 100%);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.regular-speaker-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.regular-speaker-image {
    position: relative;
    margin-bottom: 1rem;
    display: inline-block;
}

.regular-speaker-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #f59e0b;
}

.regular-speaker-badge {
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    border: 2px solid var(--white);
    white-space: nowrap;
}

.regular-speaker-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.regular-speaker-name {
    color: #1a1a1a;
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    margin: 0;
    font-family: 'Space Grotesk', sans-serif;
}

.regular-speaker-title {
    color: var(--primary);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    margin: 0;
    font-style: italic;
}

.regular-speaker-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.speaker-detail {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--gray-50);
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-md);
    border-left: 3px solid #f59e0b;
}

.speaker-detail i {
    color: #f59e0b;
    font-size: var(--fs-sm);
}

.speaker-detail span {
    color: var(--gray-700);
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
}

/* Responsive */
@media (max-width: 768px) {
    .keynote-content {
        padding: 1rem;
    }
    
    .keynote-photo {
        width: 80px;
        height: 80px;
    }
    
    .keynote-highlights {
        gap: 0.25rem;
    }
    
    .speaker-placeholders {
        gap: 1rem;
    }
    
    .placeholder-avatar {
        width: 50px;
        height: 50px;
    }
}

/* ========================================
   Call for Papers Section - Compact
   ======================================== */

.call-for-papers-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    position: relative;
    padding: 2rem 0;
}

.call-for-papers-section .section-title {
    color: var(--white);
    font-size: var(--fs-2xl);
    margin-bottom: 0.5rem;
}

.call-for-papers-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--fs-base);
    max-width: 400px;
    margin: 0 auto;
}

.call-for-papers-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border: none;
}

.call-for-papers-card .card-header {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: var(--white);
    padding: 1rem;
    text-align: center;
}

.call-for-papers-card .card-header i {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    display: block;
}

.call-for-papers-card .card-header h4 {
    margin: 0 0 0.25rem 0;
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
}

.deadline-info {
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.75rem;
    margin-top: 0.25rem;
    font-size: var(--fs-sm);
    display: inline-block;
}

.card-content {
    padding: 1rem;
}

/* Event Stats */
.event-stats {
    display: flex;
    justify-content: space-around;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.stat-item {
    text-align: center;
}

.stat-item .number {
    display: block;
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    color: var(--primary);
}

.stat-item .label {
    font-size: var(--fs-xs);
    color: var(--gray-600);
}

/* Info Sections */
.info-section {
    margin-bottom: 1rem;
}

/* Simplified Levels */
.levels-simple,
.topics-simple {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    justify-content: center;
}

.level-tag {
    background: var(--primary);
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
}

.level-tag.level-100 { background: #10B981; }
.level-tag.level-200 { background: #3B82F6; }
.level-tag.level-300 { background: #F59E0B; }
.level-tag.level-400 { background: #EF4444; }

/* Simplified Topics */
.topic-tag {
    background: #374151;
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    transition: all 0.3s ease;
}

.topic-tag:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-1px);
}

/* CTA Section */
.cta-section {
    text-align: center;
    padding-top: 0.75rem;
    border-top: 1px solid var(--gray-200);
}

.cta-button {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    border: none;
    padding: 0.5rem 1rem;
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    color: var(--white);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
    background: linear-gradient(135deg, #334155 0%, #1e293b 100%);
    color: var(--white);
}

/* Responsive */
@media (max-width: 768px) {
    .call-for-papers-section {
        padding: 1.5rem 0;
    }
    
    .call-for-papers-section .section-title {
        font-size: var(--fs-xl);
    }
    
    .call-for-papers-section .section-subtitle {
        font-size: var(--fs-sm);
    }
    
    .card-content {
        padding: 0.75rem;
    }
    
    .event-stats {
        flex-direction: column;
        gap: 0.25rem;
        padding: 0.5rem;
    }
    
    .stat-item {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .stat-item .number,
    .stat-item .label {
        display: inline;
    }
    
    .levels-simple,
    .topics-simple {
        gap: 0.125rem;
    }
    
    .level-tag,
    .topic-tag {
        font-size: var(--fs-xs);
        padding: 0.125rem 0.375rem;
    }
}

/* ========================================
   Force visibility for date badge on all mobile devices
   ======================================== */
@media screen and (max-width: 768px) {
    .hero-badge {
        position: relative !important;
        z-index: 9999 !important;
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        margin-bottom: 2rem !important;
        text-align: center !important;
    }
    
    .hero-badge .badge {
        position: relative !important;
        z-index: 10000 !important;
        display: inline-block !important;
        visibility: visible !important;
        opacity: 1 !important;
        transform: none !important;
        background: #FF9900 !important;
        color: white !important;
        font-weight: 800 !important;
        padding: 1rem 2rem !important;
        border-radius: var(--radius-lg) !important;
        border: 3px solid rgba(255, 255, 255, 0.8) !important;
        text-shadow: 0 3px 6px rgba(0, 0, 0, 0.9) !important;
        box-shadow: 0 8px 20px rgba(255, 153, 0, 0.5) !important;
    }
}

/* ========================================
   Mobile specific fixes for hero section
   ======================================== */
@media (max-width: 576px) {
    .hero-badge {
        margin-bottom: 2rem !important;
        width: 95% !important;
    }
    
    .hero-stats {
        display: flex !important;
        justify-content: space-around !important;
        align-items: center !important;
        gap: 0.8rem !important;
        margin: 2rem 0 !important;
        padding: 1.2rem 0.8rem !important;
        background: rgba(0, 0, 0, 0.6) !important;
        border-radius: var(--radius-lg) !important;
        backdrop-filter: blur(15px) !important;
        border: 1px solid rgba(255, 255, 255, 0.2) !important;
    }
    
    .stat-item {
        flex: 1 !important;
        text-align: center !important;
        min-width: 65px !important;
        max-width: 90px !important;
    }
    
    .stat-number {
        font-size: 1.6rem !important;
        font-weight: 900 !important;
        color: #FF9900 !important;
        text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8) !important;
        line-height: 1.1 !important;
        margin-bottom: 0.2rem !important;
    }
    
    .stat-label {
        font-size: 0.7rem !important;
        font-weight: 700 !important;
        color: rgba(255, 255, 255, 0.95) !important;
        text-transform: uppercase !important;
        letter-spacing: 0.5px !important;
        text-shadow: 0 2px 6px rgba(0, 0, 0, 0.9) !important;
        margin-top: 0.2rem !important;
    }
    
    .hero-title {
        font-size: var(--fs-3xl) !important;
        line-height: 1.2 !important;
        margin-bottom: 1rem !important;
    }
    
    .hero-subtitle {
        font-size: var(--fs-base) !important;
        line-height: 1.4 !important;
        margin-bottom: 1.5rem !important;
    }
}

/* ========================================
   Mobile devices optimization
   ======================================== */
@media screen and (max-width: 767px) {
    .hero-badge {
        background: rgba(255, 153, 0, 0.15) !important;
        padding: 0.8rem !important;
        border: 1px solid rgba(255, 255, 255, 0.3) !important;
        margin-bottom: 1.5rem !important;
        box-shadow: 0 4px 12px rgba(255, 153, 0, 0.3) !important;
        text-align: center !important;
        border-radius: 12px !important;
        width: auto !important;
        max-width: 280px !important;
        margin-left: auto !important;
        margin-right: auto !important;
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
    }
    
    .hero-badge .badge {
        font-size: 0.9rem !important;
        font-weight: 700 !important;
        padding: 0.7rem 1.3rem !important;
        background: #FF9900 !important;
        border: 1px solid rgba(255, 255, 255, 0.9) !important;
        text-shadow: 0 1px 3px rgba(0, 0, 0, 0.7) !important;
        border-radius: 8px !important;
        color: white !important;
        letter-spacing: 0.2px !important;
        line-height: 1.2 !important;
        box-shadow: 0 3px 8px rgba(255, 153, 0, 0.4) !important;
        display: inline-block !important;
        visibility: visible !important;
        opacity: 1 !important;
    }
    
    .hero-stats {
        background: rgba(0, 0, 0, 0.7) !important;
        padding: 1.2rem 0.8rem !important;
        border-radius: 12px !important;
        margin: 2rem 0 !important;
        backdrop-filter: blur(10px) !important;
        border: 1px solid rgba(255, 255, 255, 0.2) !important;
        display: flex !important;
        justify-content: space-around !important;
        align-items: center !important;
        gap: 0.8rem !important;
    }
    
    .stat-item {
        flex: 1 !important;
        text-align: center !important;
        min-width: 70px !important;
        max-width: 90px !important;
    }
    
    .stat-number {
        font-size: 1.6rem !important;
        font-weight: 800 !important;
        color: #FF9900 !important;
        text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8) !important;
        line-height: 1.1 !important;
        margin-bottom: 0.2rem !important;
    }
    
    .stat-label {
        font-size: 0.75rem !important;
        font-weight: 600 !important;
        color: rgba(255, 255, 255, 0.95) !important;
        text-transform: uppercase !important;
        letter-spacing: 0.4px !important;
        text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8) !important;
    }
}

/* ========================================
   Extra small devices (320px and down)
   ======================================== */
@media screen and (max-width: 320px) {
    .hero-badge .badge {
        font-size: 0.9rem !important;
        padding: 0.6rem 1.2rem !important;
        border-radius: 8px !important;
    }
    
    .stat-number {
        font-size: 1.5rem !important;
    }
    
    .stat-label {
        font-size: 0.65rem !important;
    }
}

@media (max-width: 767.98px) {
  .hero-section .row {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .hero-content {
    padding-top: 3rem;
    padding-bottom: 2rem;
  }

  .hero-stats {
    justify-content: center;
    gap: 1rem;
  }

  .hero-visual {
    margin-top: 2rem;
  }

  .countdown-container {
    padding: 1.5rem;
  }

  .time-unit {
    min-width: 60px;
    padding: 0.75rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

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

  .hero-subtitle {
    font-size: 1rem;
    max-width: 100%;
    padding: 0 1rem;
  }
}

@media (max-width: 767.98px) {
  .hero-section {
    padding-top: 3rem;
    padding-bottom: 3rem;
    text-align: center;
  }

  .hero-section .container {
    padding: 0 1rem;
  }

  .hero-title {
    font-size: 2rem !important;
    line-height: 2.4rem;
    padding: 0 1rem;
  }

  .hero-subtitle {
    font-size: 1rem;
    line-height: 1.6rem;
    margin-bottom: 1.5rem;
    padding: 0 1rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1rem;
    align-items: center;
  }

  .stat-item {
    width: 100%;
    max-width: 200px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 300px;
  }

  .countdown-container {
    width: 100%;
    padding: 1.5rem 1rem;
    margin-bottom: 2rem;
  }

  .time-unit {
    width: 60px;
    min-width: 60px;
    font-size: 1rem;
    padding: 0.75rem;
  }

  .location-container {
    margin-top: 1.5rem;
    padding: 0 1rem;
  }

  .scroll-indicator {
    display: none;
  }
}

@media (max-width: 767.98px) {
  .hero-stats {
    flex-direction: row !important;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
  }

  .stat-item {
    min-width: 90px;
    text-align: center;
  }
}


/* ========================================
   End of Styles
   ======================================== */