/* ═══════════════════════════════════════════
   AIDEG 2026 — Design System
   Palette : #0B4EA2 | #00A7B5 | #F58220
   Font    : Montserrat
═══════════════════════════════════════════ */

:root {
    --primary:      #0B4EA2;
    --teal:         #00A7B5;
    --orange:       #F58220;
    --dark-bg:      #061830;
    --light-bg:     #f4f7fb;
    --white:        #ffffff;
    --text-dark:    #1a2a3a;
    --text-muted:   #556070;
    --glass:        rgba(255, 255, 255, 0.10);
    --glass-border: rgba(255, 255, 255, 0.20);
}

/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Montserrat', sans-serif;
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-dark);
    background: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4 { font-family: 'Montserrat', sans-serif; font-weight: 700; line-height: 1.2; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* ══════════════════════════════════════════
   NAVIGATION
══════════════════════════════════════════ */
header { position: fixed; top: 0; width: 100%; z-index: 1000; padding: 1rem 0; transition: padding 0.3s ease; }

.glass-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(6, 24, 48, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 0.9rem 2.5rem;
    margin: 0 3rem;
    border-radius: 100px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: 1px;
}

.logo-ai  { color: var(--teal); }
.logo-deg { color: var(--white); }
.logo-year { color: var(--orange); font-size: 0.9rem; margin-left: 0.3rem; opacity: 0.9; }

.nav-links { display: flex; list-style: none; gap: 2rem; align-items: center; }

.nav-links a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 600;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    transition: color 0.3s;
}
.nav-links a:hover { color: var(--teal); }

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.3rem;
}
.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: rgba(255,255,255,0.8);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ── Buttons ── */
.btn-primary {
    background: linear-gradient(135deg, var(--orange), #d4691a);
    color: var(--white) !important;
    padding: 0.7rem 1.6rem;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.82rem;
    letter-spacing: 0.5px;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 4px 18px rgba(245, 130, 32, 0.35);
    transition: transform 0.3s, box-shadow 0.3s;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(245, 130, 32, 0.45); }

/* ══════════════════════════════════════════
   HERO
══════════════════════════════════════════ */
.hero {
    height: 100vh;
    min-height: 700px;
    background: var(--dark-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.hero-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.4;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 15% 40%, rgba(0, 167, 181, 0.25) 0%, transparent 45%),
                radial-gradient(circle at 85% 60%, rgba(11, 78, 162, 0.3) 0%, transparent 45%);
    z-index: 2;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(6, 24, 48, 0.9) 0%, rgba(11, 78, 162, 0.75) 100%);
    z-index: 2;
}

.hero-container {
    position: relative;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    width: 100%;
    flex: 1;
    padding-top: 5rem;
}

.hero-text-content { flex: 1.2; }

.hero-badge {
    display: inline-block;
    background: rgba(0, 167, 181, 0.2);
    border: 1px solid rgba(0, 167, 181, 0.4);
    color: var(--teal);
    padding: 0.5rem 1.2rem;
    border-radius: 30px;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out both;
}

.hero-title {
    font-size: 3.6rem;
    font-weight: 800;
    line-height: 1.08;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
    animation: fadeInUp 0.8s ease-out 0.15s both;
}
.highlight-orange { color: var(--orange); }

.hero-subtitle {
    color: rgba(255,255,255,0.72);
    font-size: 1rem;
    line-height: 1.75;
    max-width: 520px;
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.8s ease-out 0.3s both;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    animation: fadeInUp 0.8s ease-out 0.45s both;
    white-space: nowrap;
}

.btn-learn {
    background: var(--teal);
    color: var(--white);
    padding: 0.85rem 1.8rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.92rem;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 8px 25px rgba(0, 167, 181, 0.4);
    display: inline-block;
}
.btn-learn:hover { transform: translateY(-4px); box-shadow: 0 14px 32px rgba(0, 167, 181, 0.55); background: #00c2d1; }

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255,255,255,0.5);
    color: var(--white);
    padding: 0.85rem 1.8rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.92rem;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
}
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.1); transform: translateY(-4px); }

.btn-cfp {
    background: linear-gradient(135deg, var(--orange), #d4691a);
    color: var(--white);
    padding: 0.85rem 1.8rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.92rem;
    text-decoration: none;
    transition: all 0.3s;
    display: inline-block;
    box-shadow: 0 8px 25px rgba(245, 130, 32, 0.35);
}
.btn-cfp:hover { transform: translateY(-4px); box-shadow: 0 14px 32px rgba(245, 130, 32, 0.55); background: linear-gradient(135deg, #f5a623, var(--orange)); }

/* Hero Image */
.hero-visual {
    flex-shrink: 0;
    animation: float 6s ease-in-out infinite;
}

.hero-image-wrapper {
    position: relative;
    display: inline-block;
}

.hero-photo {
    width: 480px;
    max-width: 480px;
    height: 320px;
    object-fit: cover;
    border-radius: 20px;
    display: block;
    box-shadow: 0 30px 60px rgba(0,0,0,0.4);
    border: 2px solid rgba(255,255,255,0.1);
}

.hero-image-badge {
    position: absolute;
    bottom: -18px;
    left: 24px;
    background: rgba(6,24,48,0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0,167,181,0.3);
    padding: 0.8rem 1.3rem;
    border-radius: 14px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    color: var(--white);
}
.hero-image-badge .badge-icon { font-size: 1.4rem; }
.hero-image-badge strong { display: block; font-size: 0.95rem; font-weight: 700; color: var(--teal); }
.hero-image-badge span { font-size: 0.8rem; opacity: 0.7; }

/* Countdown Bar */
.countdown-bar {
    position: relative;
    z-index: 10;
    width: 100%;
    background: rgba(11, 78, 162, 0.4);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 1rem 0;
}

.countdown-bar .container {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.countdown-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: rgba(255,255,255,0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
}

.countdown-timer {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.countdown-unit {
    text-align: center;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    padding: 0.3rem 0.7rem;
    min-width: 52px;
}
.countdown-unit span { display: block; font-size: 1.3rem; font-weight: 800; color: var(--teal); line-height: 1; }
.countdown-unit small { font-size: 0.6rem; color: rgba(255,255,255,0.5); text-transform: uppercase; letter-spacing: 1px; }
.countdown-sep { color: var(--teal); font-size: 1.2rem; font-weight: 800; }

.countdown-cta {
    margin-left: auto;
    background: var(--orange);
    color: var(--white);
    padding: 0.5rem 1.3rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.85rem;
    text-decoration: none;
    transition: all 0.3s;
    white-space: nowrap;
}
.countdown-cta:hover { background: #d4691a; transform: translateY(-2px); }

/* ══════════════════════════════════════════
   SECTIONS — Shared
══════════════════════════════════════════ */
.section-padding { padding: 7rem 0; }

.section-header { text-align: center; margin-bottom: 4.5rem; }

.section-tag {
    display: inline-block;
    background: rgba(11, 78, 162, 0.08);
    color: var(--primary);
    border: 1px solid rgba(11, 78, 162, 0.15);
    padding: 0.35rem 1rem;
    border-radius: 30px;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 1rem;
}

.section-title { font-size: 2.4rem; color: var(--text-dark); margin-bottom: 1rem; }
.highlight { color: var(--teal); }

.underline {
    width: 70px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--teal));
    margin: 0 auto;
    border-radius: 2px;
}

.section-desc { color: var(--text-muted); font-size: 1rem; margin-top: 1.2rem; max-width: 600px; margin-left: auto; margin-right: auto; }

/* ══════════════════════════════════════════
   ABOUT
══════════════════════════════════════════ */
.about-section { background: var(--white); }

.about-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.6fr;
    gap: 5rem;
    align-items: start;
}

.about-text p { color: var(--text-muted); margin-bottom: 1.3rem; font-size: 1rem; }

.about-quote {
    border-left: 4px solid var(--teal);
    padding: 1.5rem 1.8rem;
    margin: 2rem 0;
    background: rgba(0, 167, 181, 0.05);
    border-radius: 0 12px 12px 0;
    font-style: italic;
    font-size: 0.97rem;
    color: var(--text-dark);
    line-height: 1.75;
}
.about-quote cite { display: block; margin-top: 0.8rem; font-style: normal; font-size: 0.82rem; color: var(--text-muted); font-weight: 600; }

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.stat-card {
    background: var(--light-bg);
    border: 1px solid #e0e8f4;
    border-radius: 16px;
    padding: 1.5rem 1.2rem;
    text-align: center;
    transition: all 0.3s;
}
.stat-card:hover { transform: translateY(-4px); box-shadow: 0 10px 25px rgba(11,78,162,0.1); border-color: var(--teal); }

.stat-number { display: block; font-size: 2.4rem; font-weight: 800; color: var(--primary); line-height: 1; }
.stat-label { display: block; font-size: 0.78rem; color: var(--text-muted); margin-top: 0.5rem; font-weight: 600; }
.stat-label small { display: block; color: var(--teal); font-weight: 700; }
.stat-highlight { background: linear-gradient(135deg, var(--primary), #073a7a); color: var(--white); grid-column: 1/-1; border: none; }
.stat-highlight .stat-label { color: rgba(255,255,255,0.8); }
.stat-highlight .stat-icon { display: block; font-size: 1.5rem; margin-bottom: 0.5rem; }

/* ══════════════════════════════════════════
   THEMES
══════════════════════════════════════════ */
.themes-section { background: var(--light-bg); }

.themes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.8rem;
}

.theme-card {
    background: var(--white);
    padding: 2.2rem 2rem;
    border-radius: 18px;
    border: 1px solid #e0e8f4;
    box-shadow: 0 4px 16px rgba(11, 78, 162, 0.05);
    position: relative;
    transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.35s, border-color 0.35s;
    overflow: hidden;
}

.theme-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--teal));
    border-radius: 4px 0 0 4px;
    opacity: 0;
    transition: opacity 0.3s;
}

.theme-card:hover { transform: translateY(-10px); box-shadow: 0 20px 40px rgba(11, 78, 162, 0.12); border-color: var(--teal); }
.theme-card:hover::before { opacity: 1; }

.theme-number { font-size: 0.7rem; font-weight: 800; color: var(--teal); text-transform: uppercase; letter-spacing: 2px; margin-bottom: 0.7rem; }
.theme-icon { font-size: 2.5rem; margin-bottom: 0.8rem; }
.theme-card h3 { color: var(--primary); font-size: 1rem; margin-bottom: 0.7rem; font-weight: 700; }
.theme-card p { color: var(--text-muted); font-size: 0.88rem; line-height: 1.65; }

.theme-card-wide { grid-column: 1 / -1; max-width: 600px; }

/* ══════════════════════════════════════════
   IMPORTANT DATES — TIMELINE
══════════════════════════════════════════ */
.dates-section { background: var(--white); }

.timeline { position: relative; max-width: 780px; margin: 0 auto; }

.timeline::before {
    content: '';
    position: absolute;
    left: 18px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--teal), var(--orange));
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
    position: relative;
    align-items: flex-start;
}

.timeline-dot {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--white);
    border: 2px solid #d0dced;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    z-index: 1;
}
.timeline-dot.active { background: var(--teal); border-color: var(--teal); box-shadow: 0 0 0 6px rgba(0,167,181,0.15); }
.timeline-dot.conference { background: var(--orange); border-color: var(--orange); box-shadow: 0 0 0 8px rgba(245,130,32,0.15); width: 46px; height: 46px; }

.timeline-content {
    flex: 1;
    background: var(--light-bg);
    border: 1px solid #e0e8f4;
    border-radius: 14px;
    padding: 1.3rem 1.6rem;
    transition: all 0.3s;
}
.timeline-content:hover { border-color: var(--teal); box-shadow: 0 8px 24px rgba(11,78,162,0.08); transform: translateX(4px); }

.timeline-date { font-size: 0.78rem; font-weight: 800; color: var(--primary); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 0.4rem; }
.timeline-event { font-size: 1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 0.4rem; }
.timeline-content p { font-size: 0.88rem; color: var(--text-muted); }

.timeline-conference .timeline-content {
    background: linear-gradient(135deg, rgba(245,130,32,0.08), rgba(11,78,162,0.08));
    border-color: var(--orange);
}
.timeline-conference .timeline-date { color: var(--orange); }

.dates-warning {
    text-align: center;
    margin-top: 3rem;
    padding: 1.2rem 2rem;
    background: rgba(245, 130, 32, 0.08);
    border: 1px solid rgba(245, 130, 32, 0.2);
    border-radius: 12px;
    color: #8b4513;
    font-size: 0.9rem;
    font-weight: 600;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

/* ══════════════════════════════════════════
   SUBMISSION
══════════════════════════════════════════ */
.submission-section { background: var(--light-bg); }

.submission-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.submission-col { display: flex; flex-direction: column; gap: 1.5rem; }

.sub-card {
    background: var(--white);
    border: 1px solid #e0e8f4;
    border-radius: 18px;
    padding: 2rem;
    flex: 1;
}

.sub-card-icon { font-size: 2rem; margin-bottom: 1rem; }
.sub-card h3 { color: var(--primary); font-size: 1.1rem; margin-bottom: 1rem; }

.sub-list { list-style: none; }
.sub-list li { padding: 0.5rem 0; padding-left: 1.5rem; position: relative; font-size: 0.9rem; color: var(--text-muted); border-bottom: 1px solid #f0f4f8; }
.sub-list li:last-child { border-bottom: none; }
.sub-list li::before { content: '→'; position: absolute; left: 0; color: var(--teal); font-weight: 800; }

.sub-steps { list-style: none; display: flex; flex-direction: column; gap: 1rem; margin-top: 0.8rem; }
.sub-steps li { display: flex; align-items: flex-start; gap: 1rem; font-size: 0.9rem; color: var(--text-muted); }
.step-num { background: var(--primary); color: var(--white); width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 800; flex-shrink: 0; }
.sub-link { color: var(--teal); font-weight: 700; text-decoration: none; word-break: break-all; font-size: 0.85rem; }
.sub-link:hover { color: var(--primary); text-decoration: underline; }

.sub-cta {
    background: linear-gradient(135deg, var(--primary), #073a7a);
    color: var(--white);
    border-radius: 18px;
    padding: 2.5rem 2rem;
    text-align: center;
}
.sub-cta h3 { color: var(--white); margin-bottom: 0.8rem; font-size: 1.2rem; }
.sub-cta p { color: rgba(255,255,255,0.75); font-size: 0.9rem; margin-bottom: 1.5rem; }

.btn-submit {
    display: block;
    background: var(--orange);
    color: var(--white);
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    margin-bottom: 0.8rem;
    transition: all 0.3s;
}
.btn-submit:hover { background: #d4691a; transform: translateY(-3px); box-shadow: 0 10px 24px rgba(245,130,32,0.4); }

.btn-submit-email {
    display: block;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.25);
    color: var(--white);
    padding: 0.8rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    transition: all 0.3s;
}
.btn-submit-email:hover { background: rgba(255,255,255,0.18); }

.btn-submit-pdf {
    display: block;
    background: linear-gradient(135deg, var(--teal), #007a86);
    color: var(--white);
    padding: 0.8rem 2rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.85rem;
    text-decoration: none;
    transition: all 0.3s;
    margin-top: 0.6rem;
    text-align: center;
}
.btn-submit-pdf:hover { background: linear-gradient(135deg, #00c2d1, var(--teal)); transform: translateY(-3px); box-shadow: 0 10px 24px rgba(0,167,181,0.4); }

/* ══════════════════════════════════════════
   VENUE
══════════════════════════════════════════ */
.venue-section { background: var(--white); }

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

.venue-card {
    display: flex;
    gap: 1.2rem;
    align-items: flex-start;
    background: var(--light-bg);
    border: 1px solid #e0e8f4;
    border-radius: 16px;
    padding: 1.8rem;
    margin-bottom: 1.5rem;
}
.venue-icon { font-size: 2.5rem; flex-shrink: 0; }
.venue-card h3 { color: var(--primary); font-size: 1.2rem; margin-bottom: 0.4rem; }
.venue-card p { color: var(--text-muted); font-size: 0.9rem; }

.venue-details { display: flex; flex-direction: column; gap: 0.8rem; }
.venue-detail-item { display: flex; gap: 0.8rem; align-items: flex-start; font-size: 0.9rem; color: var(--text-muted); }
.venue-detail-item span:first-child { flex-shrink: 0; }
.venue-link { color: var(--teal); text-decoration: none; font-weight: 700; }
.venue-link:hover { color: var(--primary); }

.venue-highlights h3 { color: var(--primary); font-size: 1.3rem; margin-bottom: 1.5rem; }

.check-list { list-style: none; }
.check-list li { margin-bottom: 0.9rem; position: relative; padding-left: 2rem; color: var(--text-dark); font-size: 0.95rem; font-weight: 500; }
.check-list li::before { content: '✓'; position: absolute; left: 0; color: var(--teal); font-weight: 800; font-size: 1rem; }

/* ══════════════════════════════════════════
   PLENARY SPEAKERS
══════════════════════════════════════════ */
.speakers-section { background: var(--white); }

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.8rem;
}

.speaker-card {
    display: flex;
    align-items: center;
    gap: 1.3rem;
    background: var(--light-bg);
    border: 1px solid #e0e8f4;
    border-radius: 18px;
    padding: 1.6rem;
    transition: all 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.speaker-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    height: 3px; width: 100%;
    background: linear-gradient(90deg, var(--primary), var(--teal));
    opacity: 0;
    transition: opacity 0.3s;
}

.speaker-card:hover { transform: translateY(-8px); box-shadow: 0 18px 40px rgba(11,78,162,0.12); border-color: var(--teal); background: var(--white); }
.speaker-card:hover::before { opacity: 1; }
.speaker-tba { opacity: 0.6; }

.speaker-avatar {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #073a7a);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.78rem;
    color: var(--white);
    letter-spacing: 0.5px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(11,78,162,0.3);
}
.avatar-teal  { background: linear-gradient(135deg, var(--teal), #007a86); }
.avatar-orange{ background: linear-gradient(135deg, var(--orange), #c26010); }
.avatar-green { background: linear-gradient(135deg, #1a8f5a, #0d6b42); }
.avatar-purple { background: linear-gradient(135deg, #7c3aed, #5b21b6); }
.avatar-muted { background: linear-gradient(135deg, #8a9ab0, #6b7a8d); box-shadow: none; }

.speaker-info h3 { font-size: 0.97rem; color: var(--text-dark); margin-bottom: 0.25rem; font-weight: 700; }
.speaker-title { font-size: 0.8rem; color: var(--teal); font-weight: 600; margin-bottom: 0.2rem; }
.speaker-affil { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; }
.speaker-extra { font-size: 0.72rem; color: var(--orange); font-weight: 600; margin-top: 0.25rem; font-style: italic; }

/* ══════════════════════════════════════════
   COMMITTEES
══════════════════════════════════════════ */
.committees-section { background: var(--light-bg); }

.committees-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
}

.committee-block {
    background: var(--white);
    border: 1px solid #e0e8f4;
    border-radius: 22px;
    padding: 2.5rem;
}

.committee-label {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1.8rem;
    padding-bottom: 1.2rem;
    border-bottom: 2px solid var(--light-bg);
}
.committee-icon { font-size: 1.5rem; }
.committee-label h3 { font-size: 1.2rem; color: var(--primary); font-weight: 800; }

/* Coordinators */
.coordinators-block { border-left: 5px solid var(--orange); }
.coord-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.coord-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, rgba(11,78,162,0.04), rgba(0,167,181,0.04));
    border: 1px solid rgba(11,78,162,0.1);
    border-radius: 14px;
    padding: 1.2rem 1.4rem;
}
.coord-initials {
    width: 46px; height: 46px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--orange), #c26010);
    color: var(--white);
    font-weight: 800;
    font-size: 0.82rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    letter-spacing: 0.5px;
}
.coord-card strong { display: block; font-size: 0.9rem; color: var(--text-dark); font-weight: 700; margin-bottom: 0.2rem; }
.coord-card span { font-size: 0.78rem; color: var(--text-muted); }

/* Committee Lists */
.committee-list { list-style: none; display: grid; gap: 0; }
.committee-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.65rem 0;
    border-bottom: 1px solid #f0f4f8;
    gap: 1rem;
}
.committee-list li:last-child { border-bottom: none; }
.mem-name { font-size: 0.88rem; font-weight: 600; color: var(--text-dark); }
.mem-aff { font-size: 0.78rem; color: var(--text-muted); text-align: right; flex-shrink: 0; }

/* Scientific committee — two columns */
.committee-scientific { border-left: 5px solid var(--teal); }
.sci-list { grid-template-columns: 1fr 1fr; }
.sci-list li { padding: 0.55rem 0.6rem; border-radius: 6px; }
.sci-list li:nth-child(odd) { background: rgba(11,78,162,0.02); }

.int-badge {
    margin-top: 1.8rem;
    padding: 1rem 1.4rem;
    background: linear-gradient(135deg, rgba(0,167,181,0.08), rgba(11,78,162,0.08));
    border: 1px solid rgba(0,167,181,0.2);
    border-radius: 12px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary);
    text-align: center;
}

@media (max-width: 768px) {
    .speakers-grid { grid-template-columns: 1fr; }
    .coord-cards { grid-template-columns: 1fr; }
    .sci-list { grid-template-columns: 1fr; }
    .committee-list li { flex-direction: column; align-items: flex-start; gap: 0.2rem; }
    .mem-aff { text-align: left; }
}

/* ══════════════════════════════════════════
══════════════════════════════════════════ */
.partners-section {
    padding: 4rem 0;
    text-align: center;
    border-top: 1px solid #e8eef5;
}

.partners-section h3 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 3px; color: #aab; margin-bottom: 2rem; font-weight: 600; }

.logos-placeholder { display: flex; justify-content: center; align-items: center; gap: 2rem; flex-wrap: wrap; }

.logo-item { font-weight: 700; font-size: 1rem; color: var(--primary); opacity: 0.45; transition: opacity 0.3s; letter-spacing: 0.5px; }
.logo-item:hover { opacity: 1; }
.logo-sep { color: #ccd; font-size: 1.2rem; opacity: 0.4; }

/* ══════════════════════════════════════════
   FOOTER
══════════════════════════════════════════ */
footer { background: var(--dark-bg); color: var(--white); padding: 5rem 0 2rem; }

.footer-content { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 3rem; margin-bottom: 4rem; }

.footer-logo-text { font-size: 1.8rem; font-weight: 800; letter-spacing: 1px; margin-bottom: 0.8rem; display: block; }
.footer-logo-text .ai { color: var(--teal); }
.footer-logo-text .yr { color: var(--orange); }

.footer-info p { opacity: 0.6; font-size: 0.88rem; line-height: 1.6; }

.footer-links-col h4, .footer-contact h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 2px; color: rgba(255,255,255,0.5); margin-bottom: 1.2rem; }
.footer-links-col ul { list-style: none; }
.footer-links-col ul li { margin-bottom: 0.6rem; }
.footer-links-col ul li a { color: rgba(255,255,255,0.65); text-decoration: none; font-size: 0.88rem; transition: color 0.3s; }
.footer-links-col ul li a:hover { color: var(--teal); }

.footer-contact .email-link { color: var(--teal); text-decoration: none; font-size: 0.95rem; font-weight: 700; transition: color 0.3s; display: block; margin-bottom: 0.5rem; }
.footer-contact .email-link:hover { color: var(--orange); }

.footer-bottom { text-align: center; padding-top: 2rem; border-top: 1px solid rgba(255, 255, 255, 0.08); font-size: 0.82rem; opacity: 0.45; }

/* ══════════════════════════════════════════
   ANIMATIONS
══════════════════════════════════════════ */
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-18px); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

/* ══════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════ */
@media (max-width: 1024px) {
    .about-grid { grid-template-columns: 1fr; gap: 3rem; }
    .about-stats { grid-template-columns: repeat(4, 1fr); }
    .venue-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .submission-grid { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr 1fr; }
    .footer-info { grid-column: 1/-1; }
}

@media (max-width: 992px) {
    .hero-container { flex-direction: column; gap: 2.5rem; padding-top: 9.5rem; }
    .hero-text-content { text-align: center; }
    .hero-subtitle { margin: 0 auto 2.5rem; }
    .hero-actions { justify-content: center; flex-wrap: wrap; white-space: normal; }
    .hero-photo { width: 380px; height: 240px; }
    .hero-title { font-size: 3rem; letter-spacing: -1.5px; }
    .themes-grid { grid-template-columns: repeat(2, 1fr); }
    .theme-card-wide { grid-column: 1; }
}

@media (max-width: 768px) {
    .glass-nav { margin: 0 1rem; padding: 0.8rem 1.5rem; justify-content: flex-end; }
    .logo { display: none; }
    
    .nav-links {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        position: fixed;
        top: 0;
        right: 0;
        width: 100vw;
        height: 100vh;
        background: radial-gradient(circle at 50% 50%, rgba(6, 24, 48, 0.98), rgba(4, 15, 30, 0.99));
        backdrop-filter: blur(25px);
        -webkit-backdrop-filter: blur(25px);
        z-index: 999;
        gap: 2.5rem;
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.77, 0.2, 0.05, 1.0);
        margin: 0;
        padding: 2rem;
    }
    
    .nav-links.active {
        transform: translateX(0);
    }
    
    .nav-links li {
        width: 100%;
        text-align: center;
    }
    
    .nav-links a {
        font-size: 1.4rem;
        letter-spacing: 1.5px;
        color: rgba(255, 255, 255, 0.9);
        transition: transform 0.3s, color 0.3s;
        display: inline-block;
        width: auto;
    }
    
    .nav-links a:hover {
        color: var(--teal);
        transform: scale(1.08);
    }
    
    .mobile-menu-btn {
        display: flex;
        z-index: 1000;
        position: relative;
    }
    
    .mobile-menu-btn span {
        transition: transform 0.3s ease, opacity 0.3s ease, background-color 0.3s ease;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
        background: var(--white);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
        background: var(--white);
    }

    .hero-container { padding-top: 9.5rem; }
    .hero-title { font-size: 2.4rem; letter-spacing: -1px; }
    .hero-photo { width: 320px; height: 200px; }
    .themes-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr 1fr; }
    .footer-content { grid-template-columns: 1fr; }
    .countdown-bar .container { gap: 1rem; }
    .hero-badge { font-size: 0.72rem; }
    .section-title { font-size: 2rem; }
    .timeline::before { left: 16px; }
    .timeline-dot { width: 32px; height: 32px; }
    .timeline-dot.conference { width: 38px; height: 38px; }
    .hero-actions { flex-direction: column; align-items: stretch; white-space: normal; gap: 0.8rem; }
    .btn-learn, .btn-outline, .btn-cfp { text-align: center; width: 100%; padding: 0.9rem 1.5rem; font-size: 0.9rem; }
}