/* montserrat-300 - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 300;
  src: url('fonts/montserrat-v31-latin-300.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* montserrat-300italic - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Montserrat';
  font-style: italic;
  font-weight: 300;
  src: url('fonts/montserrat-v31-latin-300italic.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* montserrat-regular - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400;
  src: url('fonts/montserrat-v31-latin-regular.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* montserrat-italic - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Montserrat';
  font-style: italic;
  font-weight: 400;
  src: url('fonts/montserrat-v31-latin-italic.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* montserrat-500 - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 500;
  src: url('fonts/montserrat-v31-latin-500.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* montserrat-500italic - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Montserrat';
  font-style: italic;
  font-weight: 500;
  src: url('fonts/montserrat-v31-latin-500italic.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* montserrat-600 - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 600;
  src: url('fonts/montserrat-v31-latin-600.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* montserrat-600italic - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Montserrat';
  font-style: italic;
  font-weight: 600;
  src: url('fonts/montserrat-v31-latin-600italic.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* montserrat-700 - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  src: url('fonts/montserrat-v31-latin-700.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

/* montserrat-700italic - latin */
@font-face {
  font-display: swap; /* Check https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display for other options. */
  font-family: 'Montserrat';
  font-style: italic;
  font-weight: 700;
  src: url('fonts/montserrat-v31-latin-700italic.woff2') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}


/* ===== RESET & BASE ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-dark: #1a1a2e;
  --color-darker: #0f0f1e;
  --color-accent: #c0392b;
  --color-accent-hover: #e74c3c;
  --color-text: #333;
  --color-text-light: #666;
  --color-white: #fff;
  --color-bg: #f5f5f5;
  --color-bg-alt: #eaeaea;
  --color-border: #ddd;
  --color-gold: #d4a843;
  --color-askit: #ff881f;
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Montserrat', sans-serif;
  --max-width: 1100px;
  --header-height: 70px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover {
  color: var(--color-accent-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== HEADER ===== */
#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: var(--color-white);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  z-index: 1000;
  transition: background 0.3s;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-img {
  height: 44px;
  width: auto;
}

#mainNav ul {
  display: flex;
  list-style: none;
  gap: 8px;
}

#mainNav a {
  display: block;
  padding: 10px 18px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-dark);
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}

#mainNav a:hover {
  background: var(--color-bg);
  color: var(--color-accent);
}

#mainNav .nav-cta {
  background: var(--color-accent);
  color: var(--color-white) !important;
}
#mainNav .nav-cta:hover {
  background: var(--color-accent-hover);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 24px;
  position: relative;
}
.mobile-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--color-dark);
  border-radius: 2px;
  position: absolute;
  left: 0;
  transition: 0.3s;
}
.mobile-toggle span:nth-child(1) { top: 0; }
.mobile-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.mobile-toggle span:nth-child(3) { bottom: 0; }

.mobile-toggle.active span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }


/* ===== HERO ===== */
#hero {
  position: relative;
  min-height: 75vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--color-dark) 0%, #16213e 50%, #1a1a2e 100%);
  color: var(--color-white);
  margin-top: var(--header-height);
  overflow: hidden;
}

#hero .hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: none;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26, 26, 46, 0.6);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 60px 24px;
}

.hero-edition {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 20px;
}

#hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-details {
  font-size: 1.15rem;
  font-weight: 300;
  letter-spacing: 1px;
  margin-bottom: 36px;
  opacity: 0.9;
}


/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  border-radius: 4px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(192,57,43,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-outline:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn-light {
  background: var(--color-white);
  color: var(--color-dark);
  border-color: var(--color-white);
}
.btn-light:hover {
  background: transparent;
  color: var(--color-white);
}


/* ===== INTRO ===== */
#intro {
  padding: 60px 0;
  background: var(--color-white);
}

.intro-text {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text-light);
  text-align: center;
}


/* ===== SCIENTIFIC PROGRAM ===== */
#scientific-program {
  padding: 70px 0 80px;
  background: var(--color-bg);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 50px;
  color: var(--color-dark);
  position: relative;
}
.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  margin: 14px auto 0;
  border-radius: 2px;
}

.program-day {
  margin-bottom: 50px;
}

.day-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.session-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-accent);
  margin: 30px 0 12px;
}

.program-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 8px;
  background: var(--color-white);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.program-table tr {
  border-bottom: 1px solid var(--color-bg);
  transition: background 0.15s;
}
.program-table tr:last-child {
  border-bottom: none;
}
.program-table tr:hover {
  background: #fafafa;
}

.program-table td {
  padding: 12px 18px;
  font-size: 0.92rem;
  vertical-align: top;
}

.program-table .time {
  width: 80px;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-dark);
  white-space: nowrap;
}

.break-row {
  background: var(--color-bg) !important;
}
.break-row td {
  color: var(--color-text-light);
}

.highlight-row {
  background: rgba(192,57,43,0.04) !important;
}
.highlight-row td {
  color: var(--color-dark);
}

.program-table tr:hover td:last-child {
  font-style: italic;
}
.program-table tr:hover td.time {
  color: var(--color-accent);
}


/* ===== VENUE ===== */
#venue {
  padding: 70px 0;
  background: var(--color-white);
}

.venue-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.venue-info h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 16px;
}

.venue-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-dark);
}

.venue-address {
  font-size: 1rem;
  margin-bottom: 10px;
}

.venue-note {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
}


/* ===== FACULTY ===== */
#faculty {
  padding: 70px 0 80px;
  background: var(--color-bg);
}

.faculty-subtitle {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-dark);
  margin: 40px 0 24px;
  text-align: center;
}

.faculty-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-bottom: 50px;
}

.faculty-card {
  text-align: center;
  background: var(--color-white);
  border-radius: 10px;
  padding: 28px 18px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: transform 0.25s, box-shadow 0.25s;
}
.faculty-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.1);
}

.faculty-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 16px;
  border: 3px solid var(--color-bg-alt);
}
.faculty-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.faculty-card h4 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.faculty-location {
  font-size: 0.82rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 8px;
}

.faculty-role {
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* Committee */
.committee-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.committee-member {
  background: var(--color-white);
  padding: 20px;
  border-radius: 8px;
  border-left: 3px solid var(--color-accent);
  box-shadow: 0 1px 6px rgba(0,0,0,0.04);
}

.committee-member strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--color-dark);
  margin-bottom: 6px;
}

.committee-member span {
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.5;
}


/* ===== ASKIT BANNER ===== */
#askit-banner {
  padding: 40px 0;
  background: var(--color-askit);
  color: var(--color-white);
}

.askit-inner {
  display: flex;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}

.askit-logo {
  height: 40px;
  width: auto;
}

.askit-inner p {
  flex: 1;
  font-size: 1rem;
  min-width: 200px;
}


/* ===== FOOTER ===== */
#footer {
  background: #1c1c2e;
  color: rgba(255,255,255,0.75);
  padding: 50px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 40px;
}

.footer-col h5 {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-gold);
  margin-bottom: 16px;
}

.footer-col p {
  font-size: 0.85rem;
  line-height: 1.7;
}

.footer-col a {
  color: rgba(255,255,255,0.85);
}
.footer-col a:hover {
  color: var(--color-white);
}

.footer-logo {
  max-width: 160px;
  margin-bottom: 12px;
  opacity: 0.9;
}
.footer-logo-sm {
  max-width: 120px;
  margin-bottom: 12px;
  opacity: 0.9;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 18px 24px;
  text-align: center;
  font-size: 0.78rem;
}
.footer-bottom a {
  color: rgba(255,255,255,0.65);
}
.footer-bottom a:hover {
  color: var(--color-white);
}


/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
  box-shadow: 0 4px 14px rgba(0,0,0,0.2);
  z-index: 999;
}
.back-to-top:hover {
  color: var(--color-white);
  transform: translateY(-3px);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}


/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  padding: 20px;
}
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-white);
  border-radius: 12px;
  max-width: 520px;
  width: 100%;
  padding: 36px;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--color-text-light);
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s;
}
.modal-close:hover {
  color: var(--color-accent);
}

.modal h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.modal-subtitle {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 14px;
}

.modal p {
  font-size: 0.9rem;
  margin-bottom: 20px;
}

#privacyModalOverlay {
  z-index: 10000;
}

/* Form */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 6px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-text);
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #fafafa;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(192,57,43,0.1);
  background: var(--color-white);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.form-checkbox input[type="checkbox"] {
  margin-top: 3px;
  accent-color: var(--color-accent);
}
.form-checkbox label {
  font-weight: 400;
  font-size: 0.82rem;
  color: var(--color-text-light);
}

.form-feedback {
  margin-bottom: 14px;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  display: none;
}
.form-feedback.success {
  display: block;
  background: #e8f5e9;
  color: #2e7d32;
  border: 1px solid #a5d6a7;
}
.form-feedback.error {
  display: block;
  background: #fce4ec;
  color: #c62828;
  border: 1px solid #ef9a9a;
}

.btn-submit {
  width: 100%;
  padding: 14px;
}

.modal-wide {
  max-width: 800px;
}

.privacy-iframe {
  width: 100%;
  height: 60vh;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  margin-top: 16px;
  display: block;
}


/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .faculty-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .committee-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .venue-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }

  #mainNav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: var(--color-white);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
  }
  #mainNav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  #mainNav ul {
    flex-direction: column;
    padding: 12px 0;
  }
  #mainNav a {
    padding: 14px 24px;
    border-radius: 0;
  }

  #hero {
    min-height: 60vh;
  }

  .faculty-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .committee-grid {
    grid-template-columns: 1fr;
  }

  .askit-inner {
    flex-direction: column;
    text-align: center;
  }
}

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

  #hero h1 {
    font-size: 1.6rem;
  }

  .program-table td {
    padding: 10px 12px;
    font-size: 0.84rem;
  }

  .modal {
    padding: 24px;
  }
}


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

.hero-content {
  animation: fadeInUp 0.8s ease-out;
}

.program-day,
.faculty-card,
.committee-member {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.program-day.visible,
.faculty-card.visible,
.committee-member.visible {
  opacity: 1;
  transform: translateY(0);
}