/* ===== TOKENS ===== */
    :root {
      --navy:      #0A1628;
      --navy-mid:  #112240;
      --navy-soft: #1A3354;
      --accent:    #C8922A;
      --accent-dk: #A6741C;
      --white:     #FFFFFF;
      --off-white: #F5F4F0;
      --muted:     #8A93A2;
      --border:    #E2E5EA;
      --text:      #1C2531;
      --text-soft: #4A5568;

      --font-display: 'Playfair Display', Georgia, serif;
      --font-body:    'DM Sans', sans-serif;
      --font-mono:    'DM Mono', monospace;

      --nav-h: 72px;
      --r: 4px;
      --trans: 0.22s ease;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      font-family: var(--font-body);
      color: var(--text);
      background: var(--white);
      line-height: 1.6;
      overflow-x: hidden;
    }
    img { display: block; max-width: 100%; }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }

    /* ===== SHARED ===== */
    .section-label {
      display: inline-block;
      font-family: var(--font-mono);
      font-size: 0.72rem;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--accent);
      border-left: 3px solid var(--accent);
      padding-left: 10px;
      margin-bottom: 18px;
    }
    .section-label.light { color: #E8B86D; border-color: #E8B86D; }

    .btn-primary {
      display: inline-block;
      background: var(--accent);
      color: var(--white);
      font-family: var(--font-body);
      font-weight: 600;
      font-size: 0.88rem;
      letter-spacing: 0.05em;
      padding: 14px 32px;
      border-radius: var(--r);
      transition: background var(--trans), transform var(--trans);
      cursor: pointer;
      border: none;
    }
    .btn-primary:hover { background: var(--accent-dk); transform: translateY(-2px); }

    .btn-outline {
      display: inline-block;
      background: transparent;
      color: var(--white);
      font-family: var(--font-body);
      font-weight: 600;
      font-size: 0.88rem;
      letter-spacing: 0.05em;
      padding: 13px 32px;
      border-radius: var(--r);
      border: 2px solid rgba(255,255,255,0.6);
      transition: border-color var(--trans), color var(--trans), background var(--trans);
    }
    .btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.1); }

    /* =============================================
       NAVBAR
    ============================================= */
    .navbar {
      position: fixed;
      top: 0; left: 0; right: 0;
      height: var(--nav-h);
      background: transparent;
      z-index: 1000;
      transition: background var(--trans), box-shadow var(--trans);
    }
    .navbar.scrolled {
      background: var(--navy);
      box-shadow: 0 2px 20px rgba(0,0,0,0.3);
    }
    .nav-inner {
      max-width: 1400px;
      margin: 0 auto;
      padding: 0 40px;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
    }
    .logo { flex-shrink: 0; }
    .logo-main {
      font-family: var(--font-display);
      font-weight: 900;
      font-size: 1.6rem;
      color: var(--white);
      letter-spacing: -0.02em;
    }
    .logo-year {
      font-family: var(--font-display);
      font-weight: 700;
      font-size: 1.6rem;
      color: var(--accent);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 4px;
      flex-wrap: nowrap;
    }
    .nav-link {
      display: flex;
      align-items: center;
      gap: 5px;
      font-family: var(--font-body);
      font-size: 0.82rem;
      font-weight: 500;
      color: rgba(255,255,255,0.85);
      padding: 6px 10px;
      border-radius: var(--r);
      white-space: nowrap;
      transition: color var(--trans), background var(--trans);
    }
    .nav-link i { font-size: 0.65rem; transition: transform var(--trans); }
    .nav-link:hover { color: var(--white); background: rgba(255,255,255,0.08); }
    .dropdown { position: relative; }
    .dropdown:hover > .nav-link { color: var(--accent); }
    .dropdown:hover > .nav-link i { transform: rotate(180deg); }
    .dropdown-content {
      position: absolute;
      top: calc(100% + 8px);
      left: 0;
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--r);
      box-shadow: 0 12px 40px rgba(0,0,0,0.14);
      min-width: 200px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(8px);
      transition: opacity var(--trans), transform var(--trans), visibility var(--trans);
      z-index: 200;
    }
    .dropdown:hover > .dropdown-content {
      opacity: 1; visibility: visible; transform: translateY(0);
    }
    .dropdown-content a {
      display: block;
      padding: 10px 18px;
      font-size: 0.83rem;
      font-weight: 400;
      color: var(--text-soft);
      border-bottom: 1px solid var(--border);
      transition: background var(--trans), color var(--trans), padding var(--trans);
    }
    .dropdown-content a:last-child { border-bottom: none; }
    .dropdown-content a:hover { background: var(--off-white); color: var(--accent); padding-left: 24px; }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .hamburger span {
      display: block; width: 24px; height: 2px;
      background: var(--white); border-radius: 2px;
      transition: transform var(--trans), opacity var(--trans);
    }
    .hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .hamburger.open span:nth-child(2) { opacity: 0; }
    .hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    /* =============================================
       PAGE HERO (inner page style)
    ============================================= */
    .page-hero {
      position: relative;
      height: 360px;
      display: flex;
      align-items: flex-end;
      overflow: hidden;
    }
    .page-hero-bg {
      position: absolute;
      inset: 0;
      background: url('https://images.unsplash.com/photo-1497366216548-37526070297c?q=80&w=2000') center/cover no-repeat;
    }
    .page-hero-overlay {
      position: absolute;
      inset: 0;
      background: var(--navy);
      opacity: 0.88;
    }
    .page-hero-inner {
      position: relative;
      z-index: 2;
      max-width: 1400px;
      width: 100%;
      margin: 0 auto;
      padding: 0 60px 56px;
    }
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-family: var(--font-mono);
      font-size: 0.72rem;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.45);
      margin-bottom: 16px;
    }
    .breadcrumb a { color: rgba(255,255,255,0.45); transition: color var(--trans); }
    .breadcrumb a:hover { color: var(--accent); }
    .breadcrumb i { color: var(--accent); font-size: 0.68rem; }
    .breadcrumb span { color: rgba(255,255,255,0.25); }
    .page-hero-title {
      font-family: var(--font-display);
      font-size: clamp(2.4rem, 5vw, 4rem);
      font-weight: 900;
      color: var(--white);
      line-height: 1;
      letter-spacing: -0.02em;
    }
    .page-hero-title span { color: var(--accent); }
    .page-hero-sub {
      font-family: var(--font-mono);
      font-size: 0.78rem;
      letter-spacing: 0.14em;
      color: rgba(255,255,255,0.5);
      margin-top: 12px;
    }

    /* =============================================
       DOWNLOAD BAR
    ============================================= */
    .download-bar {
      background: var(--accent);
      padding: 18px 60px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      flex-wrap: wrap;
    }
    .download-bar p {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.85);
    }
    .download-bar a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--white);
      color: var(--accent);
      font-family: var(--font-body);
      font-weight: 700;
      font-size: 0.82rem;
      letter-spacing: 0.06em;
      padding: 10px 24px;
      border-radius: var(--r);
      transition: background var(--trans), color var(--trans);
    }
    .download-bar a:hover { background: var(--navy); color: var(--white); }

    /* =============================================
       MAIN LAYOUT
    ============================================= */
    .main-wrapper {
      max-width: 1400px;
      margin: 0 auto;
      padding: 72px 60px 100px;
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 60px;
      align-items: start;
    }

    /* =============================================
       SIDEBAR
    ============================================= */
    .sidebar {
      position: sticky;
      top: calc(var(--nav-h) + 24px);
    }
    .sidebar-header {
      background: var(--navy);
      padding: 28px 24px;
      margin-bottom: 2px;
    }
    .sidebar-header h3 {
      font-family: var(--font-display);
      font-size: 1.5rem;
      font-weight: 900;
      color: var(--white);
    }
    .sidebar-header p {
      font-family: var(--font-mono);
      font-size: 0.68rem;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--accent);
      margin-top: 4px;
    }
    .accordion {
      border: 1px solid var(--border);
      margin-bottom: 2px;
    }
    .accordion-header {
      padding: 16px 18px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      background: var(--white);
      font-family: var(--font-body);
      font-size: 0.87rem;
      font-weight: 600;
      color: var(--text);
      transition: background var(--trans), color var(--trans);
    }
    .accordion-header i {
      font-size: 0.65rem;
      color: var(--muted);
      transition: transform var(--trans), color var(--trans);
    }
    .accordion-header:hover { background: var(--off-white); }
    .accordion.active .accordion-header {
      border-left: 3px solid var(--accent);
      color: var(--accent);
    }
    .accordion.active .accordion-header i {
      transform: rotate(45deg);
      color: var(--accent);
    }
    .accordion-content {
      display: none;
      background: var(--off-white);
      border-top: 1px solid var(--border);
    }
    .accordion.active .accordion-content { display: block; }
    .accordion-content a {
      display: block;
      padding: 10px 18px 10px 28px;
      color: var(--text-soft);
      border-bottom: 1px solid var(--border);
      font-size: 0.82rem;
      transition: background var(--trans), color var(--trans), padding var(--trans);
    }
    .accordion-content a:last-child { border-bottom: none; }
    .accordion-content a:hover { background: var(--navy); color: var(--white); padding-left: 36px; }
    .accordion-content a.active-link {
      color: var(--accent);
      font-weight: 600;
      padding-left: 32px;
      border-left: 3px solid var(--accent);
    }

    /* =============================================
       CONTENT AREA
    ============================================= */
    .content-area {}

    /* Section block */
    .cfp-section {
      margin-bottom: 64px;
    }
    .cfp-section-title {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 28px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--border);
    }
    .diamond {
      width: 20px; height: 20px;
      background: var(--accent);
      transform: rotate(45deg);
      flex-shrink: 0;
    }
    .cfp-section-title h2 {
      font-family: var(--font-display);
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--text);
      letter-spacing: -0.01em;
    }
    .cfp-section p {
      font-size: 0.93rem;
      color: var(--text-soft);
      line-height: 1.9;
    }

    /* Track cards */
    .tracks-list {
      display: flex;
      flex-direction: column;
      gap: 2px;
      margin-top: 8px;
    }
    .track-card {
      border: 1px solid var(--border);
      overflow: hidden;
      transition: border-color var(--trans);
    }
    .track-card:hover { border-color: var(--accent); }
    .track-card-header {
      display: flex;
      align-items: center;
      gap: 18px;
      padding: 24px 28px;
      cursor: pointer;
      background: var(--white);
      transition: background var(--trans);
    }
    .track-card-header:hover { background: var(--off-white); }
    .track-card.open .track-card-header { background: var(--navy); }
    .track-num {
      font-family: var(--font-display);
      font-size: 2rem;
      font-weight: 900;
      color: var(--border);
      line-height: 1;
      flex-shrink: 0;
      min-width: 44px;
      transition: color var(--trans);
    }
    .track-card.open .track-num { color: var(--accent); }
    .track-card-meta { flex: 1; }
    .track-card-meta h3 {
      font-family: var(--font-display);
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 4px;
      transition: color var(--trans);
    }
    .track-card.open .track-card-meta h3 { color: var(--white); }
    .track-chairs {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      letter-spacing: 0.06em;
      color: var(--muted);
      transition: color var(--trans);
    }
    .track-card.open .track-chairs { color: rgba(255,255,255,0.5); }
    .track-toggle {
      font-size: 0.75rem;
      color: var(--muted);
      transition: transform var(--trans), color var(--trans);
    }
    .track-card.open .track-toggle { transform: rotate(180deg); color: var(--accent); }
    .track-card-body {
      display: none;
      padding: 0 28px 28px;
      background: var(--off-white);
      border-top: 1px solid var(--border);
    }
    .track-card.open .track-card-body { display: block; }
    .track-section-label {
      font-family: var(--font-mono);
      font-size: 0.68rem;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--accent);
      margin: 22px 0 12px;
      display: block;
    }
    .chair-list {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .chair-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.87rem;
      color: var(--text-soft);
    }
    .chair-item i { color: var(--accent); font-size: 0.7rem; margin-top: 4px; flex-shrink: 0; }
    .topics-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
    }
    .topic-pill {
      display: flex;
      align-items: center;
      gap: 8px;
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--r);
      padding: 9px 14px;
      font-size: 0.82rem;
      color: var(--text-soft);
    }
    .topic-pill i { color: var(--accent); font-size: 0.68rem; flex-shrink: 0; }

    /* Dates table */
    .dates-table {
      width: 100%;
      border-collapse: collapse;
    }
    .dates-table tr {
      border-bottom: 1px solid var(--border);
      transition: background var(--trans);
    }
    .dates-table tr:hover { background: var(--off-white); }
    .dates-table td {
      padding: 18px 20px;
      font-size: 0.9rem;
    }
    .dates-table td:first-child {
      color: var(--text-soft);
      font-weight: 500;
      width: 55%;
      border-right: 1px solid var(--border);
    }
    .dates-table td:last-child {
      font-family: var(--font-display);
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text);
      padding-left: 28px;
    }
    .dates-table .date-icon {
      color: var(--accent);
      margin-right: 10px;
    }
    .date-badge {
      display: inline-block;
      background: var(--accent);
      color: var(--white);
      font-family: var(--font-mono);
      font-size: 0.65rem;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      padding: 3px 10px;
      border-radius: 100px;
      margin-left: 10px;
      vertical-align: middle;
    }

    /* Info cards row */
    .info-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2px;
      background: var(--border);
      border: 1px solid var(--border);
    }
    .info-card {
      background: var(--white);
      padding: 32px 28px;
      transition: background var(--trans);
    }
    .info-card:hover { background: var(--navy); }
    .info-card:hover h4,
    .info-card:hover p,
    .info-card:hover .info-icon { color: var(--white); }
    .info-card:hover .info-icon { color: var(--accent); }
    .info-icon {
      font-size: 1.6rem;
      color: var(--accent);
      margin-bottom: 14px;
      transition: color var(--trans);
    }
    .info-card h4 {
      font-family: var(--font-display);
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 10px;
      transition: color var(--trans);
    }
    .info-card p {
      font-size: 0.85rem;
      color: var(--text-soft);
      line-height: 1.7;
      transition: color var(--trans);
    }

    /* Awards banner */
    .awards-banner {
      background: var(--navy);
      border-left: 4px solid var(--accent);
      padding: 28px 32px;
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .awards-banner i { font-size: 2rem; color: var(--accent); flex-shrink: 0; }
    .awards-banner h4 {
      font-family: var(--font-display);
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--white);
      margin-bottom: 4px;
    }
    .awards-banner p {
      font-size: 0.85rem;
      color: rgba(255,255,255,0.6);
    }

    /* =============================================
       FOOTER
    ============================================= */
    .footer { background: var(--navy); color: var(--white); }
    .footer-inner {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1fr;
      gap: 48px;
      max-width: 1300px;
      margin: 0 auto;
      padding: 72px 60px 48px;
    }
    .footer-logo {
      font-family: var(--font-display);
      font-weight: 900;
      font-size: 2rem;
      margin-bottom: 16px;
    }
    .footer-logo span { color: var(--accent); }
    .footer-brand p {
      font-size: 0.85rem;
      color: rgba(255,255,255,0.5);
      line-height: 1.7;
      margin-bottom: 6px;
    }
    .footer-email {
      display: inline-block;
      font-size: 0.85rem;
      color: var(--accent);
      margin-top: 8px;
      transition: opacity var(--trans);
    }
    .footer-email:hover { opacity: 0.75; }
    .footer-links-group h4 {
      font-family: var(--font-mono);
      font-size: 0.7rem;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.35);
      margin-bottom: 20px;
    }
    .footer-links-group a {
      display: block;
      font-size: 0.87rem;
      color: rgba(255,255,255,0.6);
      margin-bottom: 10px;
      transition: color var(--trans), padding-left var(--trans);
    }
    .footer-links-group a:hover { color: var(--white); padding-left: 4px; }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding: 20px 60px;
      max-width: 1300px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }
    .footer-bottom span { font-size: 0.78rem; color: rgba(255,255,255,0.3); }
    .footer-socials { display: flex; gap: 14px; }
    .footer-socials a {
      width: 34px; height: 34px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,0.2);
      display: flex; align-items: center; justify-content: center;
      font-size: 0.78rem;
      color: rgba(255,255,255,0.55);
      transition: background var(--trans), color var(--trans), border-color var(--trans);
    }
    .footer-socials a:hover { background: var(--accent); border-color: var(--accent); color: var(--white); }

    /* =============================================
       RESPONSIVE
    ============================================= */
    @media (max-width: 1100px) {
      .main-wrapper { grid-template-columns: 240px 1fr; gap: 40px; padding: 60px 40px 80px; }
      .topics-grid { grid-template-columns: 1fr; }
      .info-cards { grid-template-columns: 1fr 1fr; }
      .footer-inner { grid-template-columns: 1fr 1fr; padding: 60px 40px 40px; }
    }
    @media (max-width: 768px) {
      .navbar { height: 60px; background: var(--navy); }
      .nav-inner { padding: 0 20px; }
      .hamburger { display: flex; }
      .nav-menu {
        position: fixed; top: 60px; left: 0; right: 0; bottom: 0;
        background: var(--navy); flex-direction: column; align-items: stretch;
        gap: 0; overflow-y: auto; padding: 16px 0 40px;
        transform: translateX(-100%); transition: transform var(--trans); z-index: 999;
      }
      .nav-menu.open { transform: translateX(0); }
      .dropdown { border-bottom: 1px solid rgba(255,255,255,0.07); }
      .nav-link { padding: 14px 24px; font-size: 0.92rem; border-radius: 0; justify-content: space-between; }
      .dropdown-content {
        position: static; opacity: 1; visibility: visible; transform: none;
        box-shadow: none; border: none; background: rgba(255,255,255,0.05);
        border-radius: 0; display: none;
      }
      .dropdown.active > .dropdown-content { display: block; }
      .dropdown-content a { padding: 10px 24px 10px 40px; color: rgba(255,255,255,0.6); font-size: 0.85rem; }
      .page-hero { height: 280px; }
      .page-hero-inner { padding: 0 24px 40px; }
      .download-bar { padding: 16px 24px; }
      .main-wrapper { grid-template-columns: 1fr; padding: 40px 24px 60px; }
      .sidebar { position: static; }
      .info-cards { grid-template-columns: 1fr; }
      .topics-grid { grid-template-columns: 1fr; }
      .footer-inner { grid-template-columns: 1fr; gap: 32px; padding: 48px 24px 32px; }
      .footer-bottom { flex-direction: column; align-items: flex-start; padding: 20px 24px; }
    }


/* 
    alert css */


    /* Alert Background */
.alert-box{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

/* Alert Content */
.alert-content{
    background: #ffffff;
    width: 350px;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    animation: popup 0.3s ease;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.alert-content h2{
    color: #2563eb;
    margin-bottom: 15px;
    font-size: 28px;
}

.alert-content p{
    color: #444;
    font-size: 16px;
    margin-bottom: 25px;
}

.alert-content button{
    background: #2563eb;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: 0.3s;
}

.alert-content button:hover{
    background: #1d4ed8;
}

/* Popup Animation */
@keyframes popup{
    from{
        transform: scale(0.7);
        opacity: 0;
    }
    to{
        transform: scale(1);
        opacity: 1;
    }
}

/* Mobile Responsive */
@media(max-width:480px){
    .alert-content{
        width: 90%;
        padding: 25px;
    }

    .alert-content h2{
        font-size: 24px;
    }

    .alert-content p{
        font-size: 15px;
    }

    .alert-content button{
        width: 100%;
    }
}