:root {
    --ted-red: #EB0028;
    --ted-red-hover: #FF1A40;
    --ted-red-glow: rgba(235, 0, 40, 0.35);
    
    --bg-black: #080808;
    --bg-card: #141414;
    --bg-card-alt: #1A1A1A;
    --border-subtle: rgba(255, 255, 255, 0.1);
    
    --text-white: #FFFFFF;
    --text-muted: #A1A1AA;
    --text-dim: #71717A;
    
    --font-main: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'Space Grotesk', monospace;
    --max-width: 1280px;

    /* Seat Size Variable */
    --seat-size: 22px;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    background-color: var(--bg-black);
    color: var(--text-white);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  a { color: inherit; text-decoration: none; }

  .wrap {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
  }

  /* ================= ANIMATIONS ================= */
  .reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), 
                transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
  }
  .reveal.active {
    opacity: 1;
    transform: translateY(0);
  }

  .tilt-card {
    transition: transform 0.15s ease-out, box-shadow 0.3s ease, border-color 0.3s ease;
    transform-style: preserve-3d;
    will-change: transform;
  }

  /* ================= NAVBAR ================= */
  header.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(8, 8, 8, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
  }
  .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
  }
  .brand-logo img {
    height: 36px;
    width: auto;
    display: block;
    object-fit: contain;
  }

  nav.nav-links {
    display: flex;
    gap: 28px;
    align-items: center;
  }
  nav.nav-links a {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-muted);
    transition: color 0.25s ease;
  }
  nav.nav-links a:hover { color: var(--text-white); }

  /* Mobile Toggle */
  .mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
  }
  .mobile-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text-white);
    border-radius: 2px;
  }

  .mobile-drawer {
    position: fixed;
    top: 72px; left: 0; right: 0; bottom: 0;
    background: rgba(8, 8, 8, 0.98);
    backdrop-filter: blur(20px);
    z-index: 999;
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }
  .mobile-drawer.open { transform: translateX(0); }
  .mobile-drawer a {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-white);
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  /* ================= HERO ================= */
  .hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding: 100px 0 60px;
  }

  .hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
    filter: brightness(65%) contrast(105%);
    animation: slowPan 22s infinite alternate ease-in-out;
  }

  @keyframes slowPan {
    0% { transform: scale(1); }
    100% { transform: scale(1.05); }
  }

  .hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    background: linear-gradient(180deg, rgba(8,8,8,0.3) 0%, rgba(8,8,8,0.75) 70%, var(--bg-black) 100%);
  }

  .hero-content {
    position: relative;
    z-index: 3;
    max-width: 880px;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .hero-brand-header img {
    max-height: clamp(48px, 8vw, 70px);
    width: auto;
    margin-bottom: 24px;
  }

  .hero-tagline {
    font-size: clamp(15px, 3vw, 20px);
    color: #E4E4E7;
    font-weight: 400;
    margin-bottom: 28px;
    max-width: 680px;
    padding: 0 10px;
  }

  .hero-countdown {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .time-block {
    background: rgba(18, 18, 18, 0.85);
    border: 1px solid var(--border-subtle);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 12px 18px;
    border-radius: 12px;
    text-align: center;
    min-width: 75px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  }
  .time-block span {
    display: block;
    font-family: var(--font-mono);
    font-size: clamp(22px, 5vw, 36px);
    font-weight: 800;
    color: var(--ted-red);
    line-height: 1;
  }
  .time-block label {
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    margin-top: 4px;
    display: block;
  }

  .hero-cta-group {
    display: flex;
    gap: 14px;
    justify-content: center;
    align-items: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    width: 100%;
    max-width: 480px;
  }
  
  .btn-primary {
    background: var(--ted-red);
    color: var(--text-white);
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 800;
    font-size: 13.5px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    transition: all 0.25s ease;
    border: 2px solid var(--ted-red);
    box-shadow: 0 4px 20px var(--ted-red-glow);
    display: inline-block;
    cursor: pointer;
    text-align: center;
  }
  .btn-primary:hover {
    background: var(--ted-red-hover);
    border-color: var(--ted-red-hover);
    transform: translateY(-2px);
  }

  .btn-secondary {
    background: rgba(0, 0, 0, 0.4);
    color: var(--text-white);
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 13.5px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    transition: all 0.25s ease;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(6px);
    display: inline-block;
    text-align: center;
  }
  .btn-secondary:hover {
    border-color: var(--text-white);
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
  }

  .hero-bottom-meta {
    font-family: var(--font-mono);
    font-size: clamp(11px, 2.5vw, 13px);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-white);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: 20px;
    width: 100%;
  }
  .hero-bottom-meta span { color: var(--ted-red); margin: 0 6px; }

  /* ================= SECTIONS ================= */
  section.page-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-subtle);
  }

  .section-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--ted-red);
    margin-bottom: 10px;
  }
  .section-title {
    font-size: clamp(26px, 5vw, 48px);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 28px;
  }

  /* ABOUT & MANDATORY TEDX COMPLIANCE CARD */
  #about {
    background: linear-gradient(135deg, #120A0C 0%, #09090B 60%, #150B0E 100%);
  }
  .intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: center;
    margin-bottom: 40px;
  }
  .intro-quote {
    font-size: clamp(19px, 3.2vw, 30px);
    font-weight: 800;
    line-height: 1.35;
    border-left: 4px solid var(--ted-red);
    padding-left: 20px;
    color: #F4F4F5;
  }
  .intro-quote span { color: var(--ted-red); }
  .intro-body p {
    font-size: 15px;
    color: var(--text-muted);
    margin-bottom: 16px;
  }

  /* MANDATORY TEDX DESCRIPTION BOX */
  .tedx-compliance-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-left: 4px solid var(--ted-red);
    border-radius: 12px;
    padding: 28px;
    margin-bottom: 40px;
  }
  .tedx-compliance-card h3 {
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--text-white);
  }
  .tedx-compliance-card p {
    font-size: 14.5px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 14px;
  }
  .tedx-compliance-card a.tedx-program-link {
    color: var(--ted-red);
    font-weight: 700;
    text-decoration: underline;
    transition: color 0.2s ease;
  }
  .tedx-compliance-card a.tedx-program-link:hover {
    color: var(--ted-red-hover);
  }

  /* VENUE & LOCATION DESCRIPTION CARD */
  .venue-info-card {
    background: var(--bg-card-alt);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: center;
  }
  .venue-text h4 {
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--text-white);
  }
  .venue-text p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
  }
  .venue-meta-badge {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--ted-red);
    margin-top: 10px;
    font-weight: 700;
  }

  /* ================= \ _ / SEATING LAYOUT ================= */
  .seat-section-wrapper {
    margin-top: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    padding: 24px 16px;
    box-shadow: 0 16px 40px rgba(0,0,0,0.4);
  }

  .seat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 16px;
  }

  .seat-counter-badge {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(235, 0, 40, 0.1);
    border: 1px solid var(--ted-red);
    padding: 6px 14px;
    border-radius: 100px;
  }
  .seat-counter-badge .num {
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 800;
    color: var(--ted-red);
  }

  .seat-controls-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
    background: rgba(255, 255, 255, 0.03);
    padding: 6px 16px;
    border-radius: 100px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
  }
  .seat-controls-bar label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
  }
  .seat-slider {
    accent-color: var(--ted-red);
    cursor: pointer;
    width: 120px;
  }

  /* STAGE AT TOP */
  .stage-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 28px;
  }
  .screen-bar {
    width: 60%;
    max-width: 320px;
    height: 6px;
    background: linear-gradient(90deg, rgba(235,0,40,0.1), var(--ted-red), rgba(235,0,40,0.1));
    border-radius: 100px;
    box-shadow: 0 0 16px var(--ted-red);
  }
  .screen-label {
    text-align: center;
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--text-dim);
    margin-top: 6px;
  }

  /* 3D HORSESHOE LAYOUT (\ _ /) */
  .theater-3d-stage {
    width: 100%;
    overflow-x: auto;
    padding: 20px 5px;
    display: flex;
    justify-content: center;
    perspective: 800px;
    -webkit-overflow-scrolling: touch;
  }

  .theater-layout {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 16px;
    transform-style: preserve-3d;
    min-width: max-content;
  }

  .wing-block {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .wing-title {
    font-family: var(--font-mono);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin-bottom: 8px;
  }

  /* Left Wing (\) */
  .block-left {
    transform: rotateY(32deg) rotateX(8deg);
    transform-origin: right top;
  }

  /* Center Block (_) */
  .block-center {
    transform: rotateX(8deg);
  }

  /* Right Wing (/) */
  .block-right {
    transform: rotateY(-32deg) rotateX(8deg);
    transform-origin: left top;
  }

  .seat-grid-left, .seat-grid-right {
    display: grid;
    grid-template-columns: repeat(5, var(--seat-size));
    gap: 5px;
  }

  .seat-grid-center {
    display: grid;
    grid-template-columns: repeat(8, var(--seat-size));
    gap: 5px;
  }

  .seat {
    width: var(--seat-size);
    height: var(--seat-size);
    border-radius: 4px;
    background: #27272A;
    border: 1px solid rgba(255, 255, 255, 0.08);
    cursor: pointer;
    transition: background 0.2s, transform 0.2s, border-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: calc(var(--seat-size) * 0.35);
    font-family: var(--font-mono);
    color: var(--text-dim);
    user-select: none;
  }

  .seat:hover:not(.occupied) {
    background: #3F3F46;
    border-color: #A1A1AA;
    color: #FFF;
    transform: scale(1.15);
    z-index: 5;
  }

  .seat.occupied {
    background: rgba(255, 255, 255, 0.05);
    border-color: transparent;
    color: #3F3F46;
    cursor: not-allowed;
  }

  .seat.selected {
    background: var(--ted-red);
    border-color: #FF1A40;
    color: #FFF;
    box-shadow: 0 0 10px var(--ted-red-glow);
    transform: scale(1.1);
  }

  .seat-legend {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 20px;
    font-size: 12px;
    color: var(--text-muted);
    flex-wrap: wrap;
  }
  .legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 2px;
  }

  /* ================= SPEAKERS =========*/
  .speakers-header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
  }

  .speaker-category-pills {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
  }
  .cat-pill {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
  }
  .cat-pill span { color: var(--ted-red); font-weight: 800; }

  .scroll-controls { display: flex; gap: 8px; }
  .scroll-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    color: var(--text-white);
    width: 38px; height: 38px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; font-size: 16px; transition: all 0.25s ease;
  }
  .scroll-btn:hover {
    background: var(--ted-red);
    border-color: var(--ted-red);
  }

  .speakers-scroll-container {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    padding: 12px 4px 20px 4px;
    -webkit-overflow-scrolling: touch;
  }
  .speakers-scroll-container::-webkit-scrollbar { height: 4px; }
  .speakers-scroll-container::-webkit-scrollbar-track { background: var(--bg-card); }
  .speakers-scroll-container::-webkit-scrollbar-thumb { background: var(--ted-red); border-radius: 10px; }

  .speaker-card {
    flex: 0 0 220px;
    scroll-snap-align: start;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    padding: 20px;
    cursor: pointer;
  }
  .speaker-card:hover {
    border-color: var(--ted-red);
    box-shadow: 0 12px 28px rgba(235, 0, 40, 0.25);
  }

  .speaker-avatar {
    width: 100%;
    aspect-ratio: 1/1;
    background: #1A1A1A;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--ted-red);
    margin-bottom: 14px;
    font-weight: 800;
  }
  .speaker-tag-label {
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ted-red);
  }
  .speaker-name { font-size: 16px; font-weight: 700; margin-top: 4px; }
  .speaker-card-cta {
    margin-top: 12px;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--text-muted);
  }

  /* ================= SCHEDULE ================= */
  .schedule-container { display: flex; flex-direction: column; gap: 24px; }

  .session-block {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    overflow: hidden;
  }

  .session-header {
    background: var(--bg-card-alt);
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
  }
  .session-header h3 { font-size: 17px; font-weight: 800; }
  .session-badge {
    font-family: var(--font-mono);
    font-size: 10.5px;
    background: rgba(235, 0, 40, 0.15);
    border: 1px solid var(--ted-red);
    color: var(--text-white);
    padding: 3px 10px;
    border-radius: 100px;
  }

  .session-items { padding: 8px 20px; }

  .schedule-row {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    align-items: start;
  }
  .schedule-row:last-child { border-bottom: none; }

  .time-col {
    font-family: var(--font-mono);
    font-size: 12.5px;
    font-weight: 700;
    color: var(--ted-red);
  }

  .info-col .event-title { font-size: 15px; font-weight: 700; margin-bottom: 2px; }
  .info-col .event-desc { font-size: 13.5px; color: var(--text-muted); }
/* SEATING SECTION */
  .seating-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px 24px;
  }
  .seating-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 16px;
  }

  .stage-indicator {
    width: 200px;
    height: 4px;
    background: var(--ted-red);
    border-radius: 4px;
    margin: 0 auto 8px;
  }
  .stage-text {
    text-align: center;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-subtle);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 32px;
  }

  .seating-layout {
    display: flex;
    justify-content: center;
    gap: 24px;
    overflow-x: auto;
    padding-bottom: 12px;
  }

  .seat-section {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .section-title-small {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-subtle);
    margin-bottom: 10px;
  }

  .grid-left, .grid-right {
    display: grid;
    grid-template-columns: repeat(5, var(--seat-size));
    gap: 6px;
  }
  .grid-center {
    display: grid;
    grid-template-columns: repeat(8, var(--seat-size));
    gap: 6px;
  }

  .seat-node {
    width: var(--seat-size);
    height: var(--seat-size);
    border-radius: 4px;
    background: #232326;
    border: 1px solid rgba(255,255,255,0.06);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-family: var(--font-mono);
    color: var(--text-subtle);
    transition: all 0.2s ease;
  }
  .seat-node:hover:not(.taken) {
    background: #3A3A40;
    color: #FFF;
  }
  .seat-node.taken {
    background: rgba(255, 255, 255, 0.04);
    cursor: not-allowed;
    color: transparent;
    border-color: transparent;
  }
  .seat-node.selected {
    background: var(--ted-red);
    color: #FFF;
    border-color: var(--ted-red-hover);
  }

  /* SPEAKERS */
  .speakers-scroll {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 20px;
    scroll-snap-type: x mandatory;
  }
  .speaker-card {
    flex: 0 0 240px;
    scroll-snap-align: start;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    transition: border-color 0.2s ease;
  }
  .speaker-card:hover {
    border-color: var(--ted-red);
  }
  .speaker-avatar-box {
    width: 100%;
    aspect-ratio: 1/1;
    background: var(--bg-card-alt);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--ted-red);
    margin-bottom: 16px;
  }
  .speaker-type {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ted-red);
    font-weight: 700;
  }
  .speaker-name {
    font-size: 16px;
    font-weight: 700;
    margin: 4px 0 8px;
  }
  .speaker-info {
    font-size: 13px;
    color: var(--text-muted);
  }
  .break-block {
    background: linear-gradient(135deg, rgba(235,0,40,0.08) 0%, rgba(20,20,20,0.8) 100%);
    border: 1px dashed rgba(235, 0, 40, 0.4);
    border-radius: 12px;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
  }
  .break-title { font-size: 15.5px; font-weight: 800; }
  .break-time {
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: var(--ted-red);
    font-weight: 700;
  }

  /* ================= CONTACT ================= */
  .contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 28px;
    align-items: start;
  }

  .contact-form-card, .contact-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    padding: 24px;
  }

  .form-heading { font-size: 20px; font-weight: 800; margin-bottom: 20px; }
  .form-group { margin-bottom: 16px; }

  .form-group label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 6px;
  }

  .form-group input, .form-group textarea {
    width: 100%;
    background: #0D0D0D;
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 12px;
    color: #FFF;
    font-family: var(--font-main);
    font-size: 16px;
    transition: border-color 0.25s ease;
  }

  .form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--ted-red);
  }

  /* ORGANIZER HOVER CARDS */
  .organizer-hover-card {
    background: var(--bg-card-alt);
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 12px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .organizer-hover-card:hover { border-color: var(--ted-red); }

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

  .org-back {
    position: absolute;
    inset: 0;
    background: var(--ted-red);
    color: #FFF;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    opacity: 0;
    transform: translateY(100%);
    pointer-events: none;
    font-size: 12.5px;
    font-weight: 600;
    line-height: 1.35;
    transition: opacity 0.35s ease, transform 0.35s ease;
  }

  .organizer-hover-card:hover .org-back {
    opacity: 1;
    transform: translateY(0);
  }

  .role-badge {
    color: var(--ted-red);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
  }

  .map-container {
    margin-top: 20px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-subtle);
  }
  .map-container iframe {
    width: 100%;
    height: 180px;
    border: 0;
    display: block;
  }

  /* MODAL */
  .modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.85);
    backdrop-filter: blur(12px);
    z-index: 2000;
    display: flex; align-items: center; justify-content: center;
    padding: 20px; opacity: 0; pointer-events: none; transition: opacity 0.3s ease;
  }
  .modal-overlay.active { opacity: 1; pointer-events: auto; }
  .modal-card {
    background: var(--bg-card);
    border: 1px solid var(--ted-red);
    border-radius: 14px;
    padding: 24px;
    max-width: 420px; width: 100%; position: relative;
  }
  .modal-close {
    position: absolute; top: 12px; right: 16px;
    background: none; border: none; color: #FFF; font-size: 22px; cursor: pointer;
  }

  /* FOOTER */
  footer {
    padding: 40px 0 24px;
    background: #040404;
    border-top: 1px solid var(--border-subtle);
  }
  .footer-legal {
    font-size: 12px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-subtle);
    padding-top: 20px;
    margin-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
  }
  .footer-legal strong {
    color: var(--text-white);
  }

  /* ================= RESPONSIVE FIXES ================= */
  @media (max-width: 850px) {
    nav.nav-links { display: none; }
    .mobile-toggle { display: flex; }
    .intro-grid, .contact-grid, .venue-info-card { grid-template-columns: 1fr; }
    .schedule-row { grid-template-columns: 1fr; gap: 4px; }
    .session-header { flex-direction: column; align-items: flex-start; }
    .hero-cta-group { flex-direction: column; width: 100%; }
    .btn-primary, .btn-secondary { width: 100%; }
  }

  @media (max-width: 600px) {
    :root { --seat-size: 18px; }
    section.page-section { padding: 60px 0; }
    .seat-section-wrapper { padding: 18px 12px; }
    .seat-header { flex-direction: column; align-items: flex-start; }
    .block-left { transform: rotateY(20deg) scale(0.9); }
    .block-right { transform: rotateY(-20deg) scale(0.9); }
    .block-center { transform: scale(0.9); }
    .theater-layout { gap: 8px; }
  }

  @media (max-width: 400px) {
    .block-left { transform: rotateY(12deg) scale(0.8); }
    .block-right { transform: rotateY(-12deg) scale(0.8); }
    .block-center { transform: scale(0.8); }
  }
/* ================= LANGUAGE BUTTON ================= */
.lang-toggle-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
}
.lang-toggle-btn:hover {
  border-color: var(--ted-red);
  color: #fff;
}

/* ================= ACCORDION SCHEDULE ================= */
.session-header {
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s ease;
}
.session-header:hover {
  background: rgba(255, 255, 255, 0.05);
}
.active-header {
  background: rgba(235, 0, 40, 0.1) !important;
  border-bottom: 1px solid rgba(235, 0, 40, 0.2);
}
.toggle-icon {
  font-size: 20px;
  font-weight: 400;
  color: var(--ted-red);
  margin-left: 10px;
  font-family: monospace;
}
.session-items {
  display: none; /* Hidden by default */
  padding-top: 10px;
}
/* Custom Text Selection Highlight */
::selection {
  background-color: var(--ted-red); /* TEDx Red background */
  color: #ffffff;                  /* White text color */
}

/* For older Firefox support */
::-moz-selection {
  background-color: var(--ted-red);
  color: #ffffff;
}
/* Mobile Responsiveness */
@media (max-width: 768px) {
  /* Adjust navigation bar layout */
  .nav-inner {
    flex-direction: column;
    gap: 12px;
    padding: 12px 16px;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    font-size: 13px;
  }

  /* Single-column grid for team cards */
  .team-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* Adjust headings for smaller screens */
  .section-title {
    font-size: 28px;
  }

  /* Optimize seating view on mobile */
  :root {
    --seat-size: 18px; /* Slightly smaller seats on phones */
  }
}
/* ==========================================================================
   TEDx Web App - Complete Mobile Responsive System
   ========================================================================== */
/* Complete Mobile Layout Fix */
@media (max-width: 768px) {
  
  /* 1. FIX HEADER & OVERLAPS */
  .nav {
    position: fixed !important;
    top: 0;
    left: 0;
    width: 100%;
    height: 64px !important;
    z-index: 1000;
    background: rgba(10, 10, 12, 0.95) !important;
    backdrop-filter: blur(16px) -webkit-backdrop-filter: blur(16px) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
  }

  .nav-inner {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    height: 100% !important;
    padding: 0 20px !important;
  }

  .brand-logo img {
    height: 28px !important;
    width: auto !important;
  }

  /* Completely hide desktop nav links on phone screens */
  .nav-links {
    display: none !important;
  }

  /* Hamburger Menu Button */
  .mobile-toggle {
    display: flex !important;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1002;
    padding: 0;
  }

  .mobile-toggle span {
    width: 100%;
    height: 2px;
    background-color: #ffffff;
    border-radius: 2px;
    transition: all 0.3s ease;
  }

  /* Mobile Drawer Menu Overlay */
  .mobile-drawer {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    height: calc(100vh - 64px);
    background: rgba(12, 12, 16, 0.98);
    backdrop-filter: blur(20px);
    padding: 30px 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    z-index: 999;
    overflow-y: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
  }

  .mobile-drawer .m-link {
    font-size: 16px;
    font-weight: 600;
    color: #e4e4e7;
    text-decoration: none;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  /* 2. FIX HERO SECTION SPACING */
  .hero {
    padding-top: 100px !important;
    min-height: auto !important;
  }

  .hero-tagline {
    font-size: 14px !important;
    line-height: 1.5 !important;
    padding: 0 10px !important;
  }

  .hero-countdown {
    gap: 10px !important;
    margin: 20px 0 !important;
  }

  .time-block {
    min-width: 60px !important;
    padding: 8px !important;
  }

  .time-block span {
    font-size: 22px !important;
  }

  /* 3. AESTHETIC SCHEDULE SECTION FOR MOBILE */
  .schedule-container {
    display: flex;
    flex-direction: column;
    gap: 12px !important;
  }

  .session-block {
    background: rgba(255, 255, 255, 0.02) !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    border-radius: 12px !important;
    overflow: hidden;
  }

  .session-header {
    display: flex !important;
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 10px !important;
    padding: 18px 16px !important;
    position: relative !important;
  }

  .session-header h3 {
    font-size: 15px !important;
    font-weight: 700 !important;
    line-height: 1.4 !important;
    padding-right: 30px !important; /* Prevents text from hitting the '+' toggle */
    margin: 0 !important;
    color: #f4f4f5 !important;
  }

  .session-badge {
    font-size: 11px !important;
    font-weight: 600 !important;
    padding: 4px 10px !important;
    border-radius: 20px !important;
    background: rgba(235, 0, 40, 0.12) !important;
    color: var(--ted-red, #eb0028) !important;
    border: 1px solid rgba(235, 0, 40, 0.25) !important;
    align-self: flex-start !important;
  }

  .toggle-icon {
    position: absolute !important;
    top: 18px !important;
    right: 16px !important;
    font-size: 20px !important;
    color: rgba(255, 255, 255, 0.5) !important;
  }

  .schedule-row {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 4px !important;
    padding: 12px 16px !important;
    background: rgba(255, 255, 255, 0.01) !important;
    border-top: 1px solid rgba(255, 255, 255, 0.04) !important;
  }

  .time-col {
    font-size: 11px !important;
    font-weight: 700 !important;
    color: var(--ted-red, #eb0028) !important;
  }

  .event-title {
    font-size: 13.5px !important;
    color: #d4d4d8 !important;
  }
}