/* =============================================
   GeoSus Workshop 2026 — CUHK Theme Stylesheet
   CUHK Colors:
     Purple  #75096D  (Pantone 255C)
     Gold    #DDA300  (Pantone 117C)
     Cream   #F4DFB0  (Pantone 7402C)
     Black   #221815  (Pantone Pro Black)
============================================= */

/* ---------- CSS Variables ---------- */
:root {
  --purple:       #75096D;
  --purple-dark:  #5a0554;
  --purple-light: #9b2493;
  --gold:         #DDA300;
  --gold-dark:    #b88700;
  --gold-light:   #F4DFB0;
  --cream:        #fdf8f0;
  --black:        #221815;
  --gray-dark:    #3a3a3a;
  --gray-mid:     #666666;
  --gray-light:   #f2f2f2;
  --white:        #ffffff;

  --font-serif: 'EB Garamond', Georgia, 'Times New Roman', serif;
  --font-sans:  'Open Sans', 'Helvetica Neue', Arial, sans-serif;

  --shadow-sm:  0 2px 8px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.16);

  --radius:     8px;
  --radius-lg:  16px;
  --transition: 0.3s ease;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  color: var(--black);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--purple); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--gold-dark); }

ul { list-style: none; }

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

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

.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--cream);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-dark);
  margin-bottom: 0.6rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--purple-dark);
  line-height: 1.2;
}

.section-rule {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--purple), var(--gold));
  margin: 1.2rem auto 1.2rem;
  border-radius: 2px;
}

.section-desc {
  max-width: 680px;
  margin: 0 auto;
  color: var(--gray-mid);
  font-size: 1.05rem;
}

.section-note {
  color: var(--gray-mid);
  font-size: 0.9rem;
  font-style: italic;
  margin-top: 0.5rem;
}

.link-gold { color: var(--gold-dark); font-weight: 600; }
.link-gold:hover { color: var(--purple); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--gold);
  color: var(--black);
  border-color: var(--gold);
}
.btn-primary:hover {
  background: var(--gold-dark);
  border-color: var(--gold-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.7);
}
.btn-outline:hover {
  background: var(--white);
  color: var(--purple);
  border-color: var(--white);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1.2rem;
  font-size: 0.85rem;
  background: var(--purple);
  color: var(--white);
  border-color: var(--purple);
}
.btn-sm:hover {
  background: var(--purple-dark);
  border-color: var(--purple-dark);
  color: var(--white);
  transform: translateY(-1px);
}

/* =============================================
   NAVIGATION
============================================= */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(8px);
  border-bottom: none;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.nav-container {
  max-width: 1560px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 0.7rem;
  position: relative;
}

.nav-brand {
  flex-shrink: 0;
}

.nav-brand-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.nav-logo-text {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.cuhk-abbr {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--purple);
  letter-spacing: 0.05em;
}

.nav-divider {
  color: var(--gold);
  font-size: 1.2rem;
}

.nav-conf {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--gray-dark);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 1;
}

.nav-links li a {
  display: block;
  padding: 0.34rem 0.48rem;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--gray-dark);
  text-transform: uppercase;
  border-radius: 4px;
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-links li a:hover {
  color: var(--purple);
  background: rgba(117, 9, 109, 0.06);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle.show-toggle {
  display: flex;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--purple);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-item-hidden {
  display: none !important;
}

.nav-overflow-links {
  display: none;
  position: absolute;
  top: 68px;
  right: 1.5rem;
  background: var(--white);
  min-width: 220px;
  max-width: min(80vw, 320px);
  flex-direction: column;
  border: 1px solid rgba(117,9,109,0.16);
  border-top: 3px solid var(--purple);
  border-radius: 0 0 10px 10px;
  box-shadow: var(--shadow-md);
  z-index: 1001;
  padding: 0.35rem 0;
}

.nav-overflow-links.open {
  display: flex;
}

.nav-overflow-links li a {
  display: block;
  padding: 0.7rem 1rem;
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--gray-dark);
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-overflow-links li a:hover {
  color: var(--purple);
  background: rgba(117, 9, 109, 0.06);
}

/* =============================================
   HERO
============================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background:
    linear-gradient(
      160deg,
      var(--purple-dark) 0%,
      var(--purple) 40%,
      #9b3a94 65%,
      #6a3060 100%
    );
}

/* Decorative geometric overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 50%, rgba(221,163,0,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 10% 80%, rgba(244,223,176,0.08) 0%, transparent 60%);
  pointer-events: none;
}

/* Grid pattern */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(90,5,84,0.5) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 8rem 2rem 5rem;
  max-width: 900px;
}

.hero-supertitle {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.2rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 0.4rem;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero-title--single {
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  font-weight: 700;
  font-style: normal;
  line-height: 1.35;
  margin-bottom: 2rem;
  color: var(--white);
  letter-spacing: 0.01em;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: rgba(255,255,255,0.9);
  font-size: 1rem;
  font-weight: 400;
}

.hero-meta-item i {
  color: var(--gold);
  font-size: 1.1rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-bilingual {
  color: rgba(255,255,255,0.6);
  font-size: 0.88rem;
  line-height: 1.8;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 1.5rem;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  animation: bounce 2s infinite;
}

.hero-scroll-indicator a {
  color: rgba(255,255,255,0.5);
  font-size: 1.4rem;
  display: block;
  transition: color var(--transition);
}
.hero-scroll-indicator a:hover { color: var(--gold); }

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* =============================================
   ANNOUNCEMENT BAR
============================================= */
.announcement-bar {
  background: linear-gradient(90deg, var(--gold-dark), var(--gold));
  color: var(--black);
  margin-top: 68px;
  padding: 0.7rem 0;
  font-size: 0.9rem;
}

.announcement-bar .container {
  display: block;
}

.announcement-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: rgba(255,255,255,0.22);
  border: 1px solid rgba(34,24,21,0.12);
  border-radius: 10px;
  padding: 0.55rem 0.8rem;
}

.announcement-main {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-width: 0;
}

.announcement-main i {
  font-size: 0.95rem;
  color: var(--purple-dark);
  flex-shrink: 0;
}

.announcement-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--purple-dark);
  padding: 0.16rem 0.45rem;
  border: 1px solid rgba(90,5,84,0.25);
  border-radius: 999px;
  background: rgba(255,255,255,0.45);
  flex-shrink: 0;
}

.announcement-text {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.45;
  color: var(--black);
}

.announcement-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.announcement-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--purple-dark);
  border: 1px solid rgba(90,5,84,0.3);
  background: rgba(255,255,255,0.5);
  border-radius: 999px;
  padding: 0.35rem 0.72rem;
  text-decoration: none;
  transition: all var(--transition);
}

.announcement-link--primary {
  background: var(--purple);
  color: var(--white);
  border-color: var(--purple);
}

.announcement-link:hover {
  background: rgba(255,255,255,0.72);
  color: var(--purple);
}

.announcement-link--primary:hover {
  background: var(--purple-dark);
  color: var(--white);
  border-color: var(--purple-dark);
}

/* =============================================
   ABOUT
============================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-text p {
  color: var(--gray-dark);
  margin-bottom: 1.2rem;
  font-size: 1.05rem;
  line-height: 1.8;
}

.about-quote {
  border-left: 4px solid var(--gold);
  background: rgba(221,163,0,0.07);
  padding: 1rem 1.5rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--purple-dark);
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-style: italic;
  line-height: 1.8;
  margin-top: 1.5rem;
}

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

.info-card {
  background: var(--white);
  border: 1px solid rgba(117,9,109,0.12);
  border-radius: var(--radius);
  padding: 1.4rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  text-align: left;
}

.info-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.info-card-icon {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 0.8rem;
  margin-left: 0;
  margin-right: 0;
}

.info-card-icon--logos {
  width: auto;
  height: auto;
  background: none;
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}

.info-card-icon--single {
  gap: 0;
}

.info-card-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  padding: 2px;
  border-radius: 8px;
  border: 1px solid rgba(117,9,109,0.12);
  box-shadow: var(--shadow-sm);
  background: var(--white);
}

.info-card-logo--single {
  width: 52px;
  height: 52px;
}

.info-card h4 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-dark);
  margin-bottom: 0.4rem;
}

.info-card p {
  font-size: 0.88rem;
  color: var(--gray-dark);
  line-height: 1.5;
}

/* =============================================
   TOPICS
============================================= */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.topic-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(117,9,109,0.08);
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}

.topic-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--purple), var(--gold));
}

.topic-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(117,9,109,0.2);
}

.topic-number {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: rgba(117,9,109,0.08);
  line-height: 1;
  margin-bottom: 0.5rem;
  position: absolute;
  top: 1rem; right: 1.2rem;
}

.topic-icon {
  width: 50px; height: 50px;
  background: linear-gradient(135deg, var(--purple-light), var(--purple));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

.topic-card h3 {
  font-family: var(--font-sans);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--purple-dark);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.topic-card p {
  font-size: 0.83rem;
  color: var(--gray-mid);
  line-height: 1.5;
}

/* =============================================
  SESSIONS
============================================= */
.sessions-grid {
  grid-template-columns: repeat(2, 1fr);
}

.session-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.session-card {
  height: 100%;
}

.session-card-meta {
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.84rem;
  color: var(--gray-dark);
}

.session-card-meta i {
  width: 14px;
  color: var(--purple);
}

.session-card-meta--conveners {
  align-items: flex-start;
  line-height: 1.4;
}

.session-detail-section {
  padding-top: 8rem;
}

.session-detail-block {
  background: var(--white);
  border: 1px solid rgba(117,9,109,0.12);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 2rem;
}

.session-detail-title {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  color: var(--purple-dark);
  margin-bottom: 0.8rem;
}

.session-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-bottom: 1.2rem;
  color: var(--gray-dark);
}

.session-detail-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.92rem;
  font-weight: 600;
}

.session-detail-meta i {
  color: var(--purple);
}

.session-subtitle {
  font-family: var(--font-serif);
  color: var(--purple);
  font-size: 1.2rem;
  margin: 1.3rem 0 0.7rem;
}

.session-section-divider {
  border: 0;
  border-top: 1px solid rgba(117,9,109,0.15);
  margin: 1.4rem 0 0.8rem;
}

.session-convener-list,
.session-report-list,
.session-intro-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.session-convener-list li,
.session-report-list li {
  padding: 0.75rem 0;
}

.session-report-list li {
  border-bottom: 1px dashed rgba(117,9,109,0.2);
}

.session-report-list li:last-child {
  border-bottom: none;
}

.session-convener-name {
  display: block;
  font-weight: 700;
  color: var(--purple-dark);
}

.session-convener-affil {
  display: inline-block;
  margin-top: 0.2rem;
  color: var(--gray-dark);
}

.session-convener-email {
  display: inline-block;
  margin-top: 0.2rem;
  color: var(--purple);
}

.session-intro-text {
  color: var(--gray-dark);
  line-height: 1.8;
  margin-bottom: 0.8rem;
}

.session-intro-list li {
  color: var(--gray-dark);
  line-height: 1.7;
  margin-bottom: 0.55rem;
  padding-left: 1.1rem;
  position: relative;
}

.session-intro-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--gold-dark);
}

.session-agenda-table-wrapper {
  width: 100%;
  overflow-x: auto;
  border: 1px solid rgba(117,9,109,0.16);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  background: var(--white);
}

.session-agenda-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 480px;
}

.session-agenda-table thead tr {
  background: linear-gradient(120deg, rgba(117,9,109,0.08), rgba(252,176,69,0.16));
}

.session-agenda-table th,
.session-agenda-table td {
  text-align: left;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid rgba(117,9,109,0.12);
}

.session-agenda-table th {
  color: var(--purple-dark);
  font-weight: 700;
}

.session-agenda-table td {
  color: var(--gray-dark);
  line-height: 1.6;
}

.session-agenda-table tbody tr:last-child td {
  border-bottom: none;
}

.session-agenda-table tbody tr:hover {
  background: rgba(117,9,109,0.04);
}

.session-agenda-empty {
  color: var(--gray-dark);
  margin: 0;
}

/* =============================================
   SPEAKERS
============================================= */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.speaker-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(117,9,109,0.1);
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  transition: all var(--transition);
}

.speaker-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--purple);
}

.speaker-card--featured {
  border-color: var(--gold);
  background: linear-gradient(135deg, #fffdf5, #fff);
}

.speaker-card--featured::before {
  /* gold top bar */
}

.speaker-avatar {
  flex-shrink: 0;
  width: 52px; height: 52px;
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
}

.speaker-card--featured .speaker-avatar {
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  color: var(--black);
}

.speaker-info h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--purple-dark);
  line-height: 1.3;
  margin-bottom: 0.3rem;
}

.speaker-cn {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--gray-mid);
  margin-left: 0.3rem;
}

.speaker-affil {
  font-size: 0.8rem;
  color: var(--gray-mid);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.speaker-titles {
  list-style: disc;
  padding-left: 1rem;
}

.speaker-titles li {
  font-size: 0.78rem;
  color: var(--gray-mid);
  line-height: 1.5;
}

/* =============================================
   COMMITTEE
============================================= */
.committee-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.committee-block {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.committee-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--purple-dark);
  margin-bottom: 1.5rem;
  padding-bottom: 0.8rem;
  border-bottom: 2px solid var(--gold-light);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.committee-title i { color: var(--gold-dark); font-size: 1rem; }

.committee-subgroup {
  margin-bottom: 1.5rem;
}

.committee-subgroup h4 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-dark);
  margin-bottom: 0.8rem;
}

.committee-subgroup h4 small {
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
  color: var(--gray-mid);
}

.committee-list li {
  padding: 0.55rem 0;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  display: flex;
  flex-direction: column;
}

.committee-list li:last-child { border-bottom: none; }

.committee-list strong {
  font-size: 0.92rem;
  color: var(--purple-dark);
  font-weight: 600;
}

.committee-list span {
  font-size: 0.8rem;
  color: var(--gray-mid);
  line-height: 1.4;
  margin-top: 0.1rem;
}

/* =============================================
   TIMELINE
============================================= */
.timeline {
  position: relative;
  max-width: 750px;
  margin: 0 auto;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--purple), var(--gold));
}

.timeline-item {
  position: relative;
  padding: 0 0 2.5rem 2.5rem;
}

.timeline-dot {
  position: absolute;
  left: -1rem;
  top: 0.4rem;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--purple);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.timeline-item--highlight .timeline-dot {
  background: var(--gold);
  border-color: var(--gold-dark);
  width: 22px; height: 22px;
  left: -1.15rem;
}

.timeline-item--conference .timeline-dot {
  background: var(--purple);
  border-color: var(--purple-dark);
  width: 22px; height: 22px;
  left: -1.15rem;
}

.timeline-date {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gold-dark);
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.timeline-date-old {
  text-decoration: line-through;
  opacity: 0.6;
  font-weight: 500;
  margin-right: 0.4em;
}

.timeline-item--highlight .timeline-date { color: var(--purple); }
.timeline-item--conference .timeline-date { color: var(--purple-dark); }

.timeline-content {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.2rem 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(117,9,109,0.08);
}

.timeline-item--highlight .timeline-content {
  border-color: var(--gold);
  background: linear-gradient(135deg, #fffdf5, #fff);
}

.timeline-item--conference .timeline-content {
  border-color: var(--purple);
  background: linear-gradient(135deg, rgba(117,9,109,0.04), #fff);
}

.timeline-content h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--purple-dark);
  margin-bottom: 0.3rem;
}

.timeline-content p {
  font-size: 0.88rem;
  color: var(--gray-mid);
}

/* =============================================
   SUBMISSION
============================================= */
.submission-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.submission-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(117,9,109,0.08);
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
}

.submission-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.submission-card--featured {
  border-color: var(--purple);
  position: relative;
}

.submission-card--featured::before {
  content: 'Most Common';
  position: absolute;
  top: -1px;
  right: 1.5rem;
  background: var(--purple);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.7rem;
  border-radius: 0 0 var(--radius) var(--radius);
}

.submission-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.4rem;
  margin-bottom: 1.2rem;
}

.submission-card--featured .submission-icon {
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  color: var(--black);
}

.submission-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--purple-dark);
  margin-bottom: 0.8rem;
}

.submission-card p {
  font-size: 0.9rem;
  color: var(--gray-mid);
  margin-bottom: 0.6rem;
}

.submission-card ul {
  list-style: disc;
  padding-left: 1.2rem;
  margin-bottom: 1.5rem;
  flex: 1;
}

.submission-card ul li {
  font-size: 0.88rem;
  color: var(--gray-dark);
  margin-bottom: 0.3rem;
  line-height: 1.5;
}

.submission-note {
  background: rgba(117,9,109,0.05);
  border: 1px solid rgba(117,9,109,0.15);
  border-radius: var(--radius);
  padding: 1.2rem 1.5rem;
  font-size: 0.9rem;
  color: var(--gray-dark);
  line-height: 1.7;
}

.submission-note i {
  color: var(--purple);
  margin-right: 0.4rem;
}

/* =============================================
   REGISTRATION TABLE
============================================= */
.reg-table-wrapper {
  overflow-x: auto;
  margin-bottom: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.reg-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  font-size: 0.95rem;
}

.reg-table thead tr {
  background: linear-gradient(90deg, var(--purple-dark), var(--purple));
  color: var(--white);
}

.reg-table th {
  padding: 1.1rem 1.5rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
}

.reg-table th small {
  display: block;
  font-weight: 400;
  color: rgba(255,255,255,0.7);
  font-size: 0.78rem;
  margin-top: 0.2rem;
  letter-spacing: 0;
}

.reg-table tbody tr {
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: background var(--transition);
}

.reg-table tbody tr:last-child { border-bottom: none; }

.reg-table tbody tr:hover { background: rgba(117,9,109,0.04); }

.reg-table td {
  padding: 1rem 1.5rem;
  color: var(--gray-dark);
}

.reg-table td.fee {
  font-weight: 600;
  color: var(--purple-dark);
  font-family: var(--font-serif);
  font-size: 1rem;
}

.reg-note {
  background: rgba(221,163,0,0.08);
  border: 1px solid rgba(221,163,0,0.3);
  border-radius: var(--radius);
  padding: 1.2rem 1.5rem;
  font-size: 0.9rem;
  color: var(--gray-dark);
  line-height: 1.7;
}

.reg-note i { color: var(--gold-dark); margin-right: 0.4rem; }
.reg-note small { display: block; margin-top: 0.4rem; color: var(--gray-mid); }

/* =============================================
   ORGANIZERS
============================================= */
.organizers-tier {
  margin-bottom: 2.5rem;
}

.organizers-tier h4 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-dark);
  margin-bottom: 1rem;
  padding-left: 0.5rem;
  border-left: 3px solid var(--gold);
}

.organizers-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.org-badge {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.2rem 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(117,9,109,0.1);
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--gray-dark);
  line-height: 1.5;
  transition: all var(--transition);
  min-width: 200px;
}

.org-badge:hover {
  border-color: var(--purple);
  box-shadow: var(--shadow-md);
}

.org-badge-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1rem;
  flex-shrink: 0;
}

.org-badge-icon--logo {
  background: var(--white);
  border: 1px solid rgba(117,9,109,0.12);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

/* =============================================
   CONTACT
============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 3rem;
  align-items: stretch;
}

.contact-item {
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(0,0,0,0.07);
  margin-bottom: 0.5rem;
}

.contact-item:last-child { border-bottom: none; }

.contact-icon {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1rem;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-dark);
  margin-bottom: 0.4rem;
}

.contact-item a {
  color: var(--purple);
  font-weight: 600;
  font-size: 0.95rem;
}

.contact-item p {
  font-size: 0.9rem;
  color: var(--gray-dark);
  line-height: 1.6;
}

.map-placeholder {
  background: linear-gradient(135deg, rgba(117,9,109,0.06), rgba(221,163,0,0.06));
  border: 2px dashed rgba(117,9,109,0.2);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  color: var(--gray-mid);
}

.map-placeholder i {
  font-size: 3rem;
  color: var(--purple);
  margin-bottom: 1rem;
  display: block;
}

.map-placeholder p {
  font-size: 0.9rem;
  margin-bottom: 0.3rem;
  line-height: 1.5;
}

/* =============================================
   FOOTER
============================================= */
.footer {
  background: var(--black);
  color: rgba(255,255,255,0.8);
}

.footer-top {
  padding: 4rem 0 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-top-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
}

.footer-logo-text {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.6rem;
}

.footer-tagline {
  font-size: 0.83rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
}

.footer-tagline-cn {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
  margin-top: 0.3rem;
}

.footer-links-group h5 {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.footer-links-group ul li {
  margin-bottom: 0.5rem;
}

.footer-links-group ul li a {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  transition: color var(--transition);
}

.footer-links-group ul li a:hover { color: var(--gold); }

.footer-date-badge {
  margin-top: 1.2rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}

.footer-date-badge i { color: var(--gold); margin-right: 0.4rem; }

.footer-bottom {
  padding: 1.5rem 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
  line-height: 1.6;
}

/* =============================================
   BACK TO TOP
============================================= */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  min-height: 44px;
  padding: 0.65rem 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--purple);
  color: var(--white);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 999;
  white-space: nowrap;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--purple-dark);
  transform: translateY(-3px);
}

.back-to-top i {
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .back-to-top {
    right: 1rem;
    bottom: 1rem;
    padding: 0.6rem 0.8rem;
    font-size: 0.8rem;
  }
}

/* =============================================
   RESPONSIVE
============================================= */
@media (max-width: 1024px) {
  .about-grid        { grid-template-columns: 1fr; gap: 2rem; }
  .topics-grid       { grid-template-columns: repeat(2, 1fr); }
  .speakers-grid     { grid-template-columns: repeat(2, 1fr); }
  .committee-grid    { grid-template-columns: 1fr; }
  .submission-grid   { grid-template-columns: 1fr; }
  .footer-top-inner  { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 1280px) and (min-width: 769px) {
  .nav-container {
    padding: 0 1rem;
    gap: 0.6rem;
  }
  .nav-logo-block { gap: 0.35rem; }
  .nav-logo-geosus { height: 32px; }
  .nav-logo-cuhk { height: 34px; }
  .nav-logo-divider { height: 24px; }
  .nav-links li a {
    padding: 0.35rem 0.45rem;
    font-size: 0.74rem;
  }
}

@media (max-width: 1100px) and (min-width: 769px) {
  .nav-logo-geosus { height: 28px; }
  .nav-logo-cuhk { height: 30px; }
  .nav-links li a {
    padding: 0.3rem 0.38rem;
    font-size: 0.7rem;
    letter-spacing: 0.01em;
  }
}

@media (max-width: 768px) {
  .nav-container { padding: 0 1rem; }
  .nav-toggle { display: flex; }
  .nav-brand {
    min-width: 0;
    max-width: calc(100% - 56px);
  }
  .nav-brand-link,
  .nav-logo-block {
    max-width: 100%;
  }
  .nav-logo-block {
    overflow: hidden;
    gap: 0.35rem;
  }
  .nav-logo-img { height: 30px; }
  .nav-logo-cuhk {
    max-width: 170px;
    width: auto;
  }
  .nav-toggle {
    flex: 0 0 auto;
    margin-left: auto;
    position: relative;
    z-index: 1002;
  }

  .hero-title { font-size: clamp(2.4rem, 10vw, 3.5rem); }

  .topics-grid     { grid-template-columns: 1fr; }
  .speakers-grid   { grid-template-columns: 1fr; }
  .about-cards     { grid-template-columns: 1fr; }
  .contact-grid    { grid-template-columns: 1fr; }

  .footer-top-inner { grid-template-columns: 1fr; }

  .section { padding: 3.5rem 0; }
  .container { padding: 0 1.2rem; }

  .announcement-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }

  .announcement-main {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .announcement-actions {
    width: 100%;
  }

  .announcement-link {
    flex: 1;
    min-width: 132px;
    text-align: center;
  }

  .nav-overflow-links {
    display: none !important;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    border-bottom: 3px solid var(--purple);
    box-shadow: var(--shadow-md);
    padding: 1rem 0;
    gap: 0;
    z-index: 1001;
  }

  .nav-links.open { display: flex; }

  .nav-links li a {
    padding: 0.7rem 2rem;
    border-radius: 0;
    font-size: 0.9rem;
  }

  .nav-links .nav-item-hidden {
    display: list-item !important;
  }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: center; }
  .hero-meta { flex-direction: column; align-items: center; gap: 0.6rem; }
  .timeline { padding-left: 1.2rem; }
  .submission-card--featured::before { display: none; }
}

/* =============================================
   NAV LOGO
============================================= */
.nav-logo-block {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-logo-img {
  height: 34px;
  width: auto;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}

/* geosus logo tends to be square/compact */
.nav-logo-geosus {
  height: 32px;
  border-radius: 4px;
}

/* CUHK logo is typically wider */
.nav-logo-cuhk {
  height: 34px;
}

.nav-logo-divider {
  display: block;
  width: 1px;
  height: 28px;
  background: rgba(117,9,109,0.25);
  flex-shrink: 0;
}

/* hero logos block removed — logos now live in the navbar */

/* =============================================
   SPEAKER PHOTO AVATAR
============================================= */
.speaker-avatar--photo {
  background: none;
  overflow: hidden;
  border: 2px solid rgba(117,9,109,0.2);
}

.speaker-avatar--photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.speaker-photo {
  object-fit: cover;
}

/* Per-speaker tuning examples: keep adding custom rules here as needed. */
.speaker-photo--bojie-fu {
  object-position: center 0%;
  transform: scale(1.2);
}

.speaker-photo--meipo-kwan {
  object-position: center 15%;
  transform: scale(1);
}

.speaker-photo--fahu-chen {
  object-position: center 15%;
  transform: scale(1);
}

.speaker-photo--jie-fan {
  object-position: center 15%;
  transform: scale(1);
}

.speaker-photo--yiqi-luo {
  object-position: center 15%;
  transform: scale(1);
}

.speaker-photo--michael-meadows {
  object-position: center 10%;
  transform: scale(1);
}

.speaker-photo--jian-peng {
  object-position: center 14%;
  transform: scale(1);
}

.speaker-photo--justin-sheffield {
  object-position: center 0%;
  transform: scale(1);
}

.speaker-photo--ying-sun {
  object-position: center 15%;
  transform: scale(1);
}

.speaker-photo--frank-witlox {
  object-position: center 0%;
  transform: scale(1);
}

.speaker-photo--anthony-yeh {
  object-position: center 10%;
  transform: scale(1.2);
}

.speaker-photo--pengjun-zhao {
  object-position: center 2.5%;
  transform: scale(1);
}

/* =============================================
   ORGANIZER LOGO BADGE
============================================= */
.org-badge--logo {
  align-items: center;
}

.org-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 2px;
  border-radius: 6px;
  flex-shrink: 0;
}

/* =============================================
   CONTACT MAP
============================================= */
.contact-map-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(117,9,109,0.12);
  height: 100%;
}

.contact-map-label {
  background: linear-gradient(90deg, var(--purple-dark), var(--purple));
  color: var(--white);
  padding: 0.8rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  font-weight: 600;
  flex-shrink: 0;
}

.contact-map-label i { color: var(--gold); }

.map-embed-container {
  line-height: 0;
  flex: 1;
  min-height: 280px;
}

.map-embed-container iframe {
  width: 100%;
  height: 100%;
  display: block;
}

.map-open-link {
  display: block;
  text-align: center;
  padding: 0.65rem 1rem;
  background: var(--cream);
  color: var(--purple);
  font-size: 0.82rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition);
  border-top: 1px solid rgba(117,9,109,0.1);
}

.map-open-link:hover {
  background: var(--purple);
  color: var(--white);
}

/* =============================================
   HOTEL SECTION
============================================= */
.hotel-grid {
  max-width: 780px;
  margin: 0 auto 2rem;
}

.hotel-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(117,9,109,0.1);
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.hotel-card:hover {
  box-shadow: var(--shadow-lg);
}

.hotel-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem 0;
}

.hotel-stars {
  color: var(--gold);
  font-size: 0.9rem;
  display: flex;
  gap: 2px;
}

.hotel-badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--purple), var(--purple-light));
  color: var(--white);
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
}

.hotel-card-body {
  padding: 1.2rem 1.5rem 1.5rem;
}

.hotel-icon-wrap {
  width: 54px; height: 54px;
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.hotel-name {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--purple-dark);
  margin-bottom: 0.2rem;
}

.hotel-name-link {
  color: inherit;
  text-decoration: none;
}

.hotel-name-link:hover {
  color: var(--purple);
  text-decoration: underline;
}

.hotel-name-cn {
  font-size: 0.9rem;
  color: var(--gray-mid);
  margin-bottom: 1.2rem;
}

.hotel-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem 1.5rem;
  margin-bottom: 1.5rem;
}

.hotel-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--gray-dark);
  line-height: 1.5;
}

.hotel-detail-item i {
  color: var(--gold-dark);
  margin-top: 0.15rem;
  flex-shrink: 0;
  width: 14px;
}

.hotel-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.hotel-map-btn {
  background: var(--purple);
  border-color: var(--purple);
  color: var(--white);
}

.hotel-web-btn {
  background: transparent;
  border: 2px solid var(--purple);
  color: var(--purple);
}

.hotel-web-btn:hover {
  background: var(--purple);
  color: var(--white);
  transform: translateY(-1px);
}

.hotel-map-preview {
  line-height: 0;
  border-top: 1px solid rgba(117,9,109,0.1);
}

.hotel-note {
  text-align: center;
  font-size: 0.88rem;
  color: var(--gray-mid);
  background: rgba(221,163,0,0.07);
  border: 1px solid rgba(221,163,0,0.25);
  border-radius: var(--radius);
  padding: 1rem 1.5rem;
  max-width: 780px;
  margin: 0 auto;
}

.hotel-note i {
  color: var(--gold-dark);
  margin-right: 0.4rem;
}

.hotel-note-highlight {
  margin-top: 1rem;
  text-align: left;
  background: #fff8e8;
  border: 1px solid #e6c978;
  border-left: 4px solid #d6a600;
  box-shadow: 0 6px 18px rgba(117, 9, 109, 0.08);
}

.hotel-note-highlight a {
  display: inline-block;
  margin-top: 0.35rem;
  font-weight: 700;
  color: var(--purple);
  word-break: break-all;
}

.hotel-note-highlight a:hover {
  color: #5e0758;
}

@media (max-width: 768px) {
  .hotel-details { grid-template-columns: 1fr; }
}

/* =============================================
   SUBMISSION MODALS
============================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(30, 8, 28, 0.65);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: var(--white);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal-box {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 1.5rem 1.2rem;
  border-bottom: 2px solid var(--gold-light);
  position: sticky;
  top: 0;
  background: var(--white);
  z-index: 1;
}

.modal-header-icon {
  width: 46px; height: 46px;
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.modal-header-icon--gold {
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  color: var(--black);
}

.modal-header h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--purple-dark);
  font-weight: 700;
  line-height: 1.2;
}

.modal-header p {
  font-size: 0.78rem;
  color: var(--gray-mid);
  margin-top: 0.1rem;
}

.modal-close {
  margin-left: auto;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--gray-mid);
  cursor: pointer;
  line-height: 1;
  padding: 0 0.2rem;
  transition: color var(--transition);
  flex-shrink: 0;
}

.modal-close:hover { color: var(--purple); }

.modal-form {
  padding: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1.1rem;
}

.form-group label {
  display: block;
  font-size: 0.83rem;
  font-weight: 700;
  color: var(--purple-dark);
  margin-bottom: 0.4rem;
  letter-spacing: 0.02em;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group select {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1.5px solid rgba(117,9,109,0.2);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--black);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(117,9,109,0.1);
}

.required {
  color: #c0392b;
  margin-left: 2px;
}

.file-upload-area {
  position: relative;
  border: 2px dashed rgba(117,9,109,0.3);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  background: rgba(117,9,109,0.02);
}

.file-upload-area:hover,
.file-upload-area.drag-over {
  border-color: var(--purple);
  background: rgba(117,9,109,0.05);
}

.file-upload-area i {
  font-size: 2rem;
  color: var(--purple);
  display: block;
  margin-bottom: 0.6rem;
}

.file-upload-area p {
  font-size: 0.88rem;
  color: var(--gray-mid);
  margin-bottom: 0.4rem;
}

.file-upload-area p strong { color: var(--purple); }

.file-name {
  display: block;
  font-size: 0.8rem;
  color: var(--gold-dark);
  font-weight: 600;
  margin-top: 0.3rem;
  word-break: break-all;
}

.file-upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.modal-footer {
  display: flex;
  gap: 0.8rem;
  justify-content: flex-end;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(0,0,0,0.07);
  margin-top: 0.5rem;
}

.btn-outline-dark {
  background: transparent;
  border: 2px solid rgba(0,0,0,0.15);
  color: var(--gray-dark);
  padding: 0.55rem 1.3rem;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition);
}

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

.modal-submit-btn {
  padding: 0.6rem 1.8rem;
  font-size: 0.92rem;
}

.modal-submit-btn i { margin-right: 0.4rem; }

.modal-submit-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none !important;
}

.modal-success {
  padding: 3rem 2rem;
  text-align: center;
}

.success-icon {
  font-size: 3.5rem;
  color: #27ae60;
  margin-bottom: 1rem;
  display: block;
}

.modal-success h4 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--purple-dark);
  margin-bottom: 0.8rem;
}

.modal-success p {
  color: var(--gray-mid);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .modal-box { max-height: 95vh; }
  .modal-footer { flex-direction: column-reverse; }
  .modal-footer .btn { width: 100%; text-align: center; }
}