/* ================================================
   PLAN P LIVE - Styles principaux + Admin
   ================================================ */

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

:root {
  --color-bg: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-tertiary: #1a1a25;
  --color-text: #ffffff;
  --color-text-secondary: #a0a0b0;
  --color-primary: #00d4aa;
  --color-primary-light: #00ffcc;
  --color-secondary: #6366f1;
  --color-accent: #f59e0b;
  --color-danger: #ef4444;
  --color-success: #22c55e;
  --color-gradient-1: linear-gradient(135deg, #00d4aa 0%, #6366f1 100%);
  --font-display: 'Sora', sans-serif;
  --font-body: 'Space Grotesk', sans-serif;
  --transition-fast: 0.2s ease;
  --transition-medium: 0.4s ease;
  --border-radius: 12px;
  --border-radius-lg: 24px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); background-color: var(--color-bg); color: var(--color-text); line-height: 1.6; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }

/* Container & Section */
.container { width: 100%; max-width: 1400px; margin: 0 auto; padding: 0 2rem; }
.section { padding: 6rem 0; position: relative; }
.section-title { font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; margin-bottom: 1rem; background: var(--color-gradient-1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-subtitle { font-size: 1.25rem; color: var(--color-text-secondary); max-width: 600px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 1rem 2rem; font-family: var(--font-display); font-weight: 600; font-size: 1rem; border-radius: 50px; cursor: pointer; transition: all var(--transition-fast); border: none; text-decoration: none; }
.btn-primary { background: var(--color-gradient-1); color: var(--color-bg); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 40px rgba(0, 212, 170, 0.3); }
.btn-secondary { background: transparent; color: var(--color-text); border: 2px solid var(--color-primary); }
.btn-secondary:hover { background: var(--color-primary); color: var(--color-bg); }
.btn-danger { background: var(--color-danger); color: white; }
.btn-danger:hover { opacity: 0.9; }
.btn-small { padding: 0.5rem 1rem; font-size: 0.875rem; }

/* Glow Effects */
.glow-effect { position: absolute; width: 600px; height: 600px; border-radius: 50%; filter: blur(150px); opacity: 0.3; pointer-events: none; z-index: -1; }
.glow-primary { background: var(--color-primary); }
.glow-secondary { background: var(--color-secondary); }

/* Header */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 1rem 0; transition: all var(--transition-medium); }
.header.scrolled { background: rgba(10, 10, 15, 0.95); backdrop-filter: blur(20px); border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { font-family: var(--font-display); font-size: 1.5rem; font-weight: 800; display: flex; align-items: center; gap: 0.5rem; }
.logo-icon { width: 40px; height: 40px; background: var(--color-gradient-1); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-weight: 800; color: var(--color-bg); }
.nav { display: flex; align-items: center; gap: 2rem; }
.nav-list { display: flex; list-style: none; gap: 2rem; }
.nav-link { font-weight: 500; position: relative; transition: color var(--transition-fast); }
.nav-link::after { content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px; background: var(--color-primary); transition: width var(--transition-fast); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-link:hover, .nav-link.active { color: var(--color-primary); }
.mobile-menu-btn { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 5px; }
.mobile-menu-btn span { width: 25px; height: 2px; background: var(--color-text); transition: all var(--transition-fast); }

/* Hero */
.hero { min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; position: relative; padding-top: 100px; overflow: hidden; }
.hero-content { position: relative; z-index: 1; }
.hero-badge { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.5rem 1rem; background: rgba(0, 212, 170, 0.1); border: 1px solid rgba(0, 212, 170, 0.3); border-radius: 50px; font-size: 0.875rem; color: var(--color-primary); margin-bottom: 2rem; animation: fadeInUp 0.6s ease; }
.hero-badge::before { content: '🎯'; }
.hero-title { font-family: var(--font-display); font-size: clamp(3rem, 10vw, 7rem); font-weight: 800; line-height: 1.1; margin-bottom: 1.5rem; animation: fadeInUp 0.6s ease 0.1s both; }
.hero-title span { background: var(--color-gradient-1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-description { font-size: clamp(1.125rem, 2vw, 1.5rem); color: var(--color-text-secondary); max-width: 700px; margin: 0 auto 2rem; animation: fadeInUp 0.6s ease 0.2s both; }
.hero-meta { display: flex; justify-content: center; gap: 3rem; margin-bottom: 3rem; flex-wrap: wrap; animation: fadeInUp 0.6s ease 0.3s both; }
.hero-meta-item { display: flex; flex-direction: column; align-items: center; }
.hero-meta-value { font-family: var(--font-display); font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.hero-meta-label { font-size: 0.875rem; color: var(--color-text-secondary); }
.hero-buttons { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; animation: fadeInUp 0.6s ease 0.4s both; }
.hero-bg { position: absolute; inset: 0; overflow: hidden; }
.hero-bg .glow-effect { animation: float 8s ease-in-out infinite; }
.hero-bg .glow-effect:nth-child(1) { top: -200px; right: -200px; }
.hero-bg .glow-effect:nth-child(2) { bottom: -200px; left: -200px; animation-delay: -4s; }

/* Marquee */
.marquee { background: var(--color-bg-secondary); padding: 1rem 0; overflow: hidden; border-top: 1px solid rgba(255, 255, 255, 0.05); border-bottom: 1px solid rgba(255, 255, 255, 0.05); }
.marquee-content { display: flex; animation: marquee 30s linear infinite; }
.marquee-item { display: flex; align-items: center; gap: 0.5rem; white-space: nowrap; padding: 0 2rem; font-weight: 500; }
.marquee-item::before { content: '✦'; color: var(--color-primary); }
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* Speaker Cards */
.speakers-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 2rem; margin-top: 3rem; }
.speaker-card { position: relative; aspect-ratio: 1; border-radius: var(--border-radius-lg); overflow: hidden; cursor: pointer; transition: all var(--transition-medium); }
.speaker-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, transparent 60%); z-index: 1; transition: all var(--transition-medium); }
.speaker-card:hover { transform: translateY(-10px); }
.speaker-card:hover::before { background: linear-gradient(to top, var(--color-primary) 0%, transparent 100%); opacity: 0.8; }
.speaker-image { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-medium); }
.speaker-card:hover .speaker-image { transform: scale(1.1); }
.speaker-info { position: absolute; bottom: 0; left: 0; right: 0; padding: 1.5rem; z-index: 2; }
.speaker-name { font-family: var(--font-display); font-size: 1.125rem; font-weight: 600; margin-bottom: 0.25rem; }
.speaker-role { font-size: 0.875rem; color: var(--color-text-secondary); transition: color var(--transition-fast); }
.speaker-card:hover .speaker-role { color: var(--color-text); }

/* Theme Cards */
.themes-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 3rem; }
.theme-card { background: var(--color-bg-secondary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--border-radius); padding: 2rem; transition: all var(--transition-medium); position: relative; overflow: hidden; }
.theme-card::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--color-gradient-1); transform: scaleY(0); transition: transform var(--transition-medium); }
.theme-card:hover { border-color: var(--color-primary); transform: translateY(-5px); }
.theme-card:hover::before { transform: scaleY(1); }
.theme-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.theme-title { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
.theme-description { font-size: 0.875rem; color: var(--color-text-secondary); }

/* Programme Tabs */
.programme-tabs { display: flex; gap: 1rem; margin-bottom: 3rem; flex-wrap: wrap; }
.programme-tab { padding: 1rem 1.5rem; background: var(--color-bg-secondary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--border-radius); cursor: pointer; transition: all var(--transition-fast); font-weight: 500; }
.programme-tab:hover, .programme-tab.active { background: var(--color-primary); color: var(--color-bg); border-color: var(--color-primary); }
.programme-tab-day { font-family: var(--font-display); font-weight: 700; display: block; }
.programme-tab-theme { font-size: 0.75rem; opacity: 0.8; }
.programme-day { display: none; }
.programme-day.active { display: block; animation: fadeIn 0.4s ease; }

/* Session Cards */
.session-card { background: var(--color-bg-secondary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--border-radius); padding: 1.5rem; margin-bottom: 1rem; display: grid; grid-template-columns: 100px 1fr auto; gap: 1.5rem; align-items: center; transition: all var(--transition-fast); text-decoration: none; color: inherit; cursor: pointer; }
.session-card:hover { border-color: var(--color-primary); transform: translateX(10px); background: rgba(0, 212, 170, 0.05); }
.session-time { font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; color: var(--color-primary); }
.session-title { font-family: var(--font-display); font-size: 1.125rem; font-weight: 600; margin-bottom: 0.5rem; }
.session-speakers { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.session-speaker-tag { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.25rem 0.75rem; background: rgba(99, 102, 241, 0.2); border-radius: 50px; font-size: 0.875rem; transition: all var(--transition-fast); }
.session-speaker-tag:hover { background: var(--color-secondary); color: white; }
.session-speaker-avatar { width: 24px; height: 24px; border-radius: 50%; object-fit: cover; }

/* Stats */
.stats-section { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; padding: 3rem 0; }
.stat-item { text-align: center; }
.stat-value { font-family: var(--font-display); font-size: clamp(2rem, 5vw, 4rem); font-weight: 800; background: var(--color-gradient-1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { color: var(--color-text-secondary); font-size: 1rem; margin-top: 0.5rem; }

/* Info Cards */
.info-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 2rem; margin-top: 3rem; }
.info-card { background: var(--color-bg-secondary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--border-radius-lg); padding: 2.5rem; }
.info-card-icon { font-size: 3rem; margin-bottom: 1.5rem; }
.info-card-title { font-family: var(--font-display); font-size: 1.5rem; font-weight: 600; margin-bottom: 1rem; }
.info-card-content { color: var(--color-text-secondary); line-height: 1.8; }
.info-card-content strong { color: var(--color-text); }

/* FAQ */
.faq-item { background: var(--color-bg-secondary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--border-radius); margin-bottom: 1rem; overflow: hidden; }
.faq-question { padding: 1.5rem; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 600; transition: all var(--transition-fast); }
.faq-question:hover { color: var(--color-primary); }
.faq-icon { font-size: 1.5rem; transition: transform var(--transition-fast); }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height var(--transition-medium); }
.faq-item.active .faq-answer { max-height: 500px; }
.faq-answer-content { padding: 0 1.5rem 1.5rem; color: var(--color-text-secondary); }

/* CTA Section */
.cta-section { background: var(--color-bg-secondary); border-radius: var(--border-radius-lg); padding: 4rem; text-align: center; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: var(--color-gradient-1); opacity: 0.1; }
.cta-title { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; margin-bottom: 1rem; position: relative; }
.cta-description { color: var(--color-text-secondary); font-size: 1.125rem; margin-bottom: 2rem; position: relative; }
.cta-buttons { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; position: relative; }

/* Newsletter */
.newsletter-form { display: flex; gap: 1rem; max-width: 500px; margin: 2rem auto 0; }
.newsletter-input { flex: 1; padding: 1rem 1.5rem; background: var(--color-bg-tertiary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 50px; color: var(--color-text); font-size: 1rem; outline: none; transition: border-color var(--transition-fast); }
.newsletter-input:focus { border-color: var(--color-primary); }
.newsletter-input::placeholder { color: var(--color-text-secondary); }

/* Footer */
.footer { background: var(--color-bg-secondary); border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 4rem 0 2rem; margin-top: 4rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-brand { max-width: 300px; }
.footer-brand .logo { margin-bottom: 1rem; }
.footer-brand p { color: var(--color-text-secondary); font-size: 0.875rem; }
.footer-title { font-family: var(--font-display); font-weight: 600; margin-bottom: 1.5rem; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.75rem; }
.footer-links a { color: var(--color-text-secondary); transition: color var(--transition-fast); }
.footer-links a:hover { color: var(--color-primary); }
.footer-social { display: flex; gap: 1rem; }
.footer-social a { width: 40px; height: 40px; background: rgba(255, 255, 255, 0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: all var(--transition-fast); }
.footer-social a:hover { background: var(--color-primary); color: var(--color-bg); }
.footer-bottom { padding-top: 2rem; border-top: 1px solid rgba(255, 255, 255, 0.1); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; font-size: 0.875rem; color: var(--color-text-secondary); }

/* Animations */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes float { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(-30px, -30px); } }
.fade-in { animation: fadeIn 0.6s ease; }
.fade-in-up { animation: fadeInUp 0.6s ease; }

/* Mobile Menu */
.mobile-menu { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--color-bg); z-index: 999; display: flex; flex-direction: column; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all var(--transition-medium); }
.mobile-menu.active { opacity: 1; visibility: visible; }
.mobile-menu-close { position: absolute; top: 1.5rem; right: 1.5rem; background: none; border: none; color: var(--color-text); font-size: 2rem; cursor: pointer; }
.mobile-nav-list { list-style: none; text-align: center; }
.mobile-nav-list li { margin-bottom: 2rem; }
.mobile-nav-list a { font-family: var(--font-display); font-size: 1.5rem; font-weight: 600; }

/* ================================================
   ADMIN STYLES
   ================================================ */

.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar { width: 260px; background: var(--color-bg-secondary); border-right: 1px solid rgba(255, 255, 255, 0.1); padding: 2rem 0; position: fixed; height: 100vh; overflow-y: auto; }
.admin-sidebar .logo { padding: 0 1.5rem; margin-bottom: 2rem; }
.admin-nav { list-style: none; }
.admin-nav li { margin-bottom: 0.25rem; }
.admin-nav a { display: flex; align-items: center; gap: 0.75rem; padding: 0.875rem 1.5rem; color: var(--color-text-secondary); transition: all var(--transition-fast); border-left: 3px solid transparent; }
.admin-nav a:hover, .admin-nav a.active { background: rgba(0, 212, 170, 0.1); color: var(--color-primary); border-left-color: var(--color-primary); }
.admin-nav-icon { font-size: 1.25rem; }
.admin-main { flex: 1; margin-left: 260px; padding: 2rem; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; padding-bottom: 1rem; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.admin-title { font-family: var(--font-display); font-size: 1.75rem; font-weight: 700; }
.admin-card { background: var(--color-bg-secondary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--border-radius); padding: 1.5rem; margin-bottom: 1.5rem; }
.admin-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.admin-card-title { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; }

/* Admin Tables */
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td { padding: 1rem; text-align: left; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.admin-table th { font-weight: 600; color: var(--color-text-secondary); font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; }
.admin-table tr:hover { background: rgba(255, 255, 255, 0.02); }
.admin-table-actions { display: flex; gap: 0.5rem; }

/* Admin Forms */
.admin-form { display: grid; gap: 1.5rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
.form-label { font-weight: 500; font-size: 0.875rem; color: var(--color-text-secondary); }
.form-input, .form-textarea, .form-select { padding: 0.875rem 1rem; background: var(--color-bg-tertiary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--border-radius); color: var(--color-text); font-size: 1rem; font-family: var(--font-body); transition: border-color var(--transition-fast); }
.form-input:focus, .form-textarea:focus, .form-select:focus { outline: none; border-color: var(--color-primary); }
.form-textarea { min-height: 120px; resize: vertical; }
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.form-actions { display: flex; gap: 1rem; margin-top: 1rem; }

/* Admin Stats */
.admin-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; margin-bottom: 2rem; }
.admin-stat-card { background: var(--color-bg-secondary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--border-radius); padding: 1.5rem; text-align: center; }
.admin-stat-value { font-family: var(--font-display); font-size: 2.5rem; font-weight: 700; color: var(--color-primary); }
.admin-stat-label { color: var(--color-text-secondary); font-size: 0.875rem; margin-top: 0.5rem; }

/* Modal */
.modal { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.8); display: flex; align-items: center; justify-content: center; z-index: 1000; opacity: 0; visibility: hidden; transition: all var(--transition-fast); }
.modal.active { opacity: 1; visibility: visible; }
.modal-content { background: var(--color-bg-secondary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--border-radius-lg); padding: 2rem; max-width: 600px; width: 90%; max-height: 90vh; overflow-y: auto; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.modal-title { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--color-text-secondary); font-size: 1.5rem; cursor: pointer; transition: color var(--transition-fast); }
.modal-close:hover { color: var(--color-text); }

/* Login */
.login-container { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-box { background: var(--color-bg-secondary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--border-radius-lg); padding: 3rem; max-width: 400px; width: 90%; text-align: center; }
.login-box .logo { justify-content: center; margin-bottom: 2rem; }
.login-title { font-family: var(--font-display); font-size: 1.5rem; margin-bottom: 0.5rem; }
.login-subtitle { color: var(--color-text-secondary); margin-bottom: 2rem; }
.login-form { display: flex; flex-direction: column; gap: 1rem; }
.login-form .form-input { text-align: center; }
.login-error { color: var(--color-danger); font-size: 0.875rem; margin-top: 0.5rem; }

/* Toast Notifications */
.toast-container { position: fixed; bottom: 2rem; right: 2rem; z-index: 1001; }
.toast { background: var(--color-bg-secondary); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--border-radius); padding: 1rem 1.5rem; margin-top: 0.5rem; display: flex; align-items: center; gap: 0.75rem; animation: slideIn 0.3s ease; }
.toast-success { border-color: var(--color-success); }
.toast-error { border-color: var(--color-danger); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Loading */
.loading { display: flex; align-items: center; justify-content: center; padding: 3rem; }
.spinner { width: 40px; height: 40px; border: 3px solid rgba(255, 255, 255, 0.1); border-top-color: var(--color-primary); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Avatar */
.avatar { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; background: var(--color-bg-tertiary); }
.avatar-small { width: 32px; height: 32px; }

/* Badge */
.badge { display: inline-flex; padding: 0.25rem 0.75rem; border-radius: 50px; font-size: 0.75rem; font-weight: 600; }
.badge-primary { background: rgba(0, 212, 170, 0.2); color: var(--color-primary); }
.badge-secondary { background: rgba(99, 102, 241, 0.2); color: var(--color-secondary); }
.badge-warning { background: rgba(245, 158, 11, 0.2); color: var(--color-accent); }

/* Responsive */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .admin-stats { grid-template-columns: repeat(2, 1fr); }
  .themes-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-list { display: none; }
  .nav .btn { display: none; }
  .mobile-menu-btn { display: flex; }
  .hero-meta { gap: 1rem; }
  .session-card { grid-template-columns: 70px 1fr; gap: 1rem; }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .admin-sidebar { display: none; }
  .admin-main { margin-left: 0; }
  .admin-stats { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .stats-section { grid-template-columns: repeat(2, 1fr); }
  .speakers-grid { grid-template-columns: repeat(2, 1fr); }
  .themes-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { padding: 0 1rem; }
  .section { padding: 3rem 0; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 300px; }
  .newsletter-form { flex-direction: column; }
  .speakers-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
  .speaker-image { width: 70px; height: 70px; }
}