/* ════════════════════════════════════
   UOS International Portal — Mobile First
   ════════════════════════════════════ */

/* ─── Variables ─── */
:root {
  --navy:        #002D72;
  --navy-dark:   #001A4E;
  --navy-mid:    #003D9E;
  --navy-light:  #1A5BC4;
  --gold:        #C8952A;
  --gold-light:  #F0B429;
  --gold-pale:   #FDF3DC;
  --white:       #FFFFFF;
  --bg:          #F0F4FF;
  --card:        #FFFFFF;
  --border:      #E5E7EB;
  --text-1:      #1A1A2E;
  --text-2:      #4B5563;
  --text-3:      #9CA3AF;
  --danger:      #EF4444;
  --radius-sm:   10px;
  --radius:      16px;
  --radius-lg:   24px;
  --shadow-sm:   0 1px 4px rgba(0,0,0,.08);
  --shadow:      0 4px 16px rgba(0,45,114,.12);
  --shadow-lg:   0 8px 32px rgba(0,45,114,.18);
  --trans:       0.25s ease;
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Noto Sans KR', 'Noto Sans', 'Apple SD Gothic Neo',
               'Noto Sans SC', 'Noto Sans JP', sans-serif;
  background: var(--bg);
  color: var(--text-1);
  line-height: 1.6;
  overflow: hidden; /* screens handle their own scroll */
}
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input { font: inherit; }
img, svg { display: block; }

/* ════════════════════════════════════
   SCREEN SYSTEM
   ════════════════════════════════════ */
.screen {
  position: fixed;
  inset: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease, transform 0.5s ease;
  transform: translateY(12px);
  z-index: 10;
}
.screen-hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
}
.screen-visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

/* ════════════════════════════════════
   LOADING SCREEN
   ════════════════════════════════════ */
.screen-loading {
  background: linear-gradient(160deg, var(--navy-dark) 0%, var(--navy) 60%, var(--navy-mid) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
}
.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
  padding: 32px;
  animation: fadeInUp 0.8s ease both;
}
.loading-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.logo-img {
  width: 140px;
  height: 140px;
  object-fit: contain;
  border-radius: 50%;
  filter: drop-shadow(0 0 24px rgba(200,149,42,.4));
  animation: pulse 2s ease-in-out infinite;
}
.loading-uni-name {
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.06em;
  text-shadow: 0 2px 12px rgba(0,0,0,.3);
}
.loading-uni-en {
  font-size: 0.85rem;
  font-weight: 300;
  color: rgba(255,255,255,.6);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.loading-bar-container {
  width: 200px;
  height: 3px;
  background: rgba(255,255,255,.15);
  border-radius: 99px;
  overflow: hidden;
}
.loading-bar-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  border-radius: 99px;
  animation: loadingBar 2.2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
@keyframes loadingBar {
  0%   { width: 0; }
  60%  { width: 70%; }
  85%  { width: 88%; }
  100% { width: 100%; }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 24px rgba(200,149,42,.4)); }
  50%       { transform: scale(1.04); filter: drop-shadow(0 0 36px rgba(200,149,42,.6)); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ════════════════════════════════════
   LANGUAGE SELECTION SCREEN
   ════════════════════════════════════ */
.screen-language {
  background: linear-gradient(160deg, var(--navy-dark) 0%, var(--navy) 50%, #0A3A8E 100%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: 32px 24px;
  gap: 0;
}

/* subtle radial glow */
.screen-language::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(200,149,42,.15) 0%, transparent 70%);
  pointer-events: none;
}

.lang-page-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
}
.lang-page-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.logo-img-sm {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border-radius: 50%;
}
.lang-page-uni-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.06em;
}
.lang-page-uni-en {
  font-size: 0.72rem;
  font-weight: 300;
  color: rgba(255,255,255,.5);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.lang-select-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--white);
  margin-top: 16px;
  text-align: center;
}
.lang-select-subtitle {
  font-size: 0.85rem;
  color: rgba(255,255,255,.55);
  text-align: center;
}

.lang-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  width: 100%;
  max-width: 400px;
}
.lang-card {
  background: rgba(255,255,255,.08);
  border: 1.5px solid rgba(255,255,255,.15);
  border-radius: var(--radius);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(8px);
  transition: background var(--trans), border-color var(--trans), transform var(--trans), box-shadow var(--trans);
  position: relative;
  overflow: hidden;
}
.lang-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(200,149,42,.08), transparent);
  opacity: 0;
  transition: opacity var(--trans);
}
.lang-card:hover, .lang-card:focus-visible {
  background: rgba(255,255,255,.14);
  border-color: var(--gold);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(200,149,42,.2);
}
.lang-card:hover::before { opacity: 1; }
.lang-card:active { transform: scale(0.97); }
.lang-flag { font-size: 2.4rem; line-height: 1; }
.lang-name { font-size: 1.1rem; font-weight: 700; color: var(--white); }
.lang-native { font-size: 0.72rem; color: rgba(255,255,255,.55); }
.lang-arrow {
  font-size: 1.2rem;
  color: var(--gold);
  margin-top: 4px;
  transform: translateX(-4px);
  opacity: 0;
  transition: transform var(--trans), opacity var(--trans);
}
.lang-card:hover .lang-arrow { transform: translateX(0); opacity: 1; }

.lang-footer {
  margin-top: 36px;
  font-size: 0.72rem;
  color: rgba(255,255,255,.3);
  text-align: center;
}

/* ════════════════════════════════════
   HOME SCREEN
   ════════════════════════════════════ */
.screen-home {
  background: var(--bg);
  z-index: 100;
  display: flex;
  flex-direction: column;
}

/* ─── Header ─── */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--white);
  border-bottom: 1px solid transparent;
  transition: border-color var(--trans), box-shadow var(--trans);
}
.header-shadow {
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
}
.header-logo { display: flex; align-items: center; gap: 10px; }
.header-logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
}
.header-portal-label {
  font-size: 0.7rem;
  color: var(--text-3);
  font-weight: 500;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.header-actions { display: flex; align-items: center; gap: 8px; }

/* Language toggle dropdown */
.lang-toggle-wrapper { position: relative; }
.lang-toggle-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--navy);
  transition: background var(--trans), border-color var(--trans);
}
.lang-toggle-btn:hover { background: #e6eaff; border-color: var(--navy-light); }
.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  min-width: 140px;
  overflow: hidden;
  z-index: 100;
}
.lang-dropdown.hidden { display: none; }
.lang-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 12px 16px;
  font-size: 0.88rem;
  color: var(--text-1);
  transition: background var(--trans);
}
.lang-option:hover { background: var(--bg); }

/* Hamburger */
.hamburger-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--trans);
}
.hamburger-btn:hover { background: var(--bg); }
.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform var(--trans), opacity var(--trans);
}

/* ─── Main Content ─── */
.main-content {
  flex: 1;
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
  padding-bottom: 120px;
}

/* ─── Hero ─── */
.hero-section { padding: 0 0 8px; }
.hero-bg {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 60%, var(--navy-mid) 100%);
  padding: 28px 20px 32px;
  position: relative;
  overflow: hidden;
}
.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle, rgba(200,149,42,.18) 0%, transparent 70%);
  pointer-events: none;
}
.hero-greeting {
  font-size: 1.7rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1.2;
}
.hero-subtitle {
  font-size: 0.88rem;
  color: rgba(255,255,255,.65);
  margin-top: 4px;
}
.hero-date {
  font-size: 0.78rem;
  color: var(--gold-light);
  margin-top: 10px;
  font-weight: 500;
}

/* Quick Info Cards */
.quick-info-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 0 16px;
  margin-top: -20px;
  position: relative;
  z-index: 2;
}
.quick-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 16px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform var(--trans), box-shadow var(--trans);
  border: 1.5px solid transparent;
  min-height: 80px;
}
.quick-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.quick-card:active { transform: scale(0.97); }
.quick-card-icon-wrap {
  font-size: 1.6rem;
  line-height: 1;
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.shuttle-icon { background: #EEF2FF; }
.menu-icon   { background: #FFF7ED; }
.quick-card-body { flex: 1; min-width: 0; }
.quick-card-label {
  font-size: 0.68rem;
  color: var(--text-3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.quick-card-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.quick-card-sub { font-size: 0.72rem; color: var(--text-3); margin-top: 2px; }
.quick-card-arrow { font-size: 1.3rem; color: var(--text-3); flex-shrink: 0; }
.shuttle-quick-card { border-color: #C7D2FE; }
.menu-quick-card    { border-color: #FED7AA; }

/* ─── Sections ─── */
.section { padding: 24px 16px 0; }
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-1);
}
.section-view-all {
  font-size: 0.78rem;
  color: var(--navy-light);
  font-weight: 500;
}
.section-view-all:hover { text-decoration: underline; }

/* ─── Notices (horizontal scroll) ─── */
.notices-scroll-wrapper {
  margin: 0 -16px;
  padding: 0 16px;
  overflow: hidden;
}
.notices-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 8px;
  scrollbar-width: none;
}
.notices-scroll::-webkit-scrollbar { display: none; }
.notice-card {
  flex: 0 0 260px;
  scroll-snap-align: start;
  background: var(--white);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  transition: box-shadow var(--trans), transform var(--trans);
}
.notice-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.notice-category {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--navy-light);
  background: #EEF2FF;
  padding: 2px 8px;
  border-radius: 20px;
  width: fit-content;
  letter-spacing: 0.04em;
}
.notice-title {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-1);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.notice-date { font-size: 0.72rem; color: var(--text-3); margin-top: auto; }

/* ─── FAQ Grid ─── */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.faq-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 14px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background var(--trans), border-color var(--trans),
              transform var(--trans), box-shadow var(--trans), color var(--trans);
}
.faq-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  opacity: 0;
  transition: opacity var(--trans);
}
.faq-icon {
  font-size: 1.5rem;
  position: relative;
  z-index: 1;
  transition: transform var(--trans);
}
.faq-text {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-1);
  position: relative;
  z-index: 1;
  transition: color var(--trans);
  line-height: 1.35;
}
.faq-arrow {
  font-size: 1.1rem;
  color: var(--text-3);
  margin-top: auto;
  position: relative;
  z-index: 1;
  transform: translateX(-6px);
  opacity: 0;
  transition: transform var(--trans), opacity var(--trans), color var(--trans);
}

.faq-card:hover { border-color: transparent; transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.faq-card:hover::before { opacity: 1; }
.faq-card:hover .faq-text { color: var(--white); }
.faq-card:hover .faq-arrow { transform: translateX(0); opacity: 1; color: var(--gold-light); }
.faq-card:hover .faq-icon { transform: scale(1.1); }
.faq-card:active { transform: scale(0.97); }

/* touch active state */
.faq-card.touch-active { border-color: transparent; }
.faq-card.touch-active::before { opacity: 1; }
.faq-card.touch-active .faq-text { color: var(--white); }
.faq-card.touch-active .faq-arrow { transform: translateX(0); opacity: 1; color: var(--gold-light); }

/* ─── Quick Links ─── */
.links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.link-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: background var(--trans), border-color var(--trans), transform var(--trans);
  text-align: center;
}
.link-card:hover { background: var(--bg); border-color: var(--navy-light); transform: translateY(-2px); }
.link-card:active { transform: scale(0.95); }
.link-icon { font-size: 1.4rem; }
.link-text { font-size: 0.68rem; font-weight: 600; color: var(--text-2); line-height: 1.3; }

/* ─── Footer ─── */
.main-footer {
  padding: 32px 16px 16px;
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-3);
}

/* ════════════════════════════════════
   NAV OVERLAY
   ════════════════════════════════════ */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  justify-content: flex-end;
}
.nav-overlay.hidden { pointer-events: none; }
.nav-overlay-bg {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.45);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity 0.35s ease;
}
.nav-overlay.hidden .nav-overlay-bg { opacity: 0; }
.nav-overlay.nav-open .nav-overlay-bg { opacity: 1; }

.nav-panel {
  position: relative;
  width: 85%;
  max-width: 320px;
  height: 100%;
  background: var(--white);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
  overflow-y: auto;
  box-shadow: -4px 0 32px rgba(0,0,0,.15);
}
.nav-overlay.nav-open .nav-panel { transform: translateX(0); }

.nav-panel-header {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy));
  padding: 52px 20px 24px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}
.nav-panel-logo { display: flex; flex-direction: column; gap: 4px; }
.nav-panel-uni { font-size: 1.3rem; font-weight: 700; color: var(--white); }
.nav-panel-portal { font-size: 0.78rem; color: rgba(255,255,255,.6); }
.nav-close-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  color: var(--white);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--trans);
  margin-top: -4px;
}
.nav-close-btn:hover { background: rgba(255,255,255,.25); }

.nav-menu { flex: 1; padding: 8px 0; }
.nav-menu-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-1);
  border-bottom: 1px solid var(--border);
  transition: background var(--trans), color var(--trans);
}
.nav-menu-item:last-child { border-bottom: none; }
.nav-menu-item:hover { background: var(--bg); color: var(--navy); }
.nav-menu-icon { font-size: 1.2rem; width: 24px; text-align: center; }
.nav-menu-text { flex: 1; }
.nav-menu-arrow { font-size: 1.2rem; color: var(--text-3); }

.nav-lang-section {
  padding: 20px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.nav-lang-title { font-size: 0.72rem; color: var(--text-3); font-weight: 600; margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.08em; }
.nav-lang-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.nav-lang-btn {
  padding: 8px 12px;
  border-radius: 20px;
  border: 1.5px solid var(--border);
  background: var(--white);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
  transition: all var(--trans);
}
.nav-lang-btn:hover { border-color: var(--navy); color: var(--navy); background: #EEF2FF; }
.lang-btn-active { border-color: var(--navy) !important; background: var(--navy) !important; color: var(--white) !important; }

.nav-panel-footer {
  padding: 20px;
  border-top: 1px solid var(--border);
}
.nav-contact-info { font-size: 0.78rem; color: var(--text-2); line-height: 2; margin-bottom: 16px; }
.nav-login-section { display: flex; gap: 8px; }
.btn-login, .btn-signup {
  flex: 1;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  transition: all var(--trans);
}
.btn-login { border: 1.5px solid var(--navy); color: var(--navy); background: transparent; }
.btn-login:hover { background: var(--navy); color: var(--white); }
.btn-signup { background: var(--navy); color: var(--white); }
.btn-signup:hover { background: var(--navy-dark); }

/* ════════════════════════════════════
   CHATBOT
   ════════════════════════════════════ */
.chatbot-container {
  position: fixed;
  bottom: 24px;
  right: 20px;
  z-index: 400;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.chat-fab {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--white);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,45,114,.35);
  transition: transform var(--trans), box-shadow var(--trans), opacity var(--trans);
  animation: fabIn 0.5s 2.5s both;
  border: 3px solid var(--gold);
  padding: 0;
}
.chat-fab:hover { transform: scale(1.1); box-shadow: 0 8px 28px rgba(0,45,114,.45); }
.chat-fab:active { transform: scale(0.95); }
.chat-fab.fab-hidden { opacity: 0; pointer-events: none; transform: scale(0.8); }
.chat-fab-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

@keyframes fabIn {
  from { opacity: 0; transform: scale(0.5) translateY(20px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* Chat Window */
.chat-window {
  width: calc(100vw - 32px);
  max-width: 340px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 40px rgba(0,0,0,.18);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 480px;
  animation: slideUp 0.3s ease;
}
.chat-window.hidden { display: none; }
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.chat-header {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy));
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.chat-header-left { display: flex; align-items: center; gap: 10px; }
.chat-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: rgba(255,255,255,.15);
}
.chat-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.chat-name { font-size: 0.9rem; font-weight: 700; color: var(--white); }
.chat-status { font-size: 0.68rem; color: #6EE7B7; }
.chat-close-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  color: var(--white);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--trans);
}
.chat-close-btn:hover { background: rgba(255,255,255,.25); }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #F8FAFF;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.chat-msg { display: flex; }
.chat-msg-bot { justify-content: flex-start; }
.chat-msg-user { justify-content: flex-end; }
.chat-bubble {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 0.84rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}
.chat-bubble-bot {
  background: var(--white);
  color: var(--text-1);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
  box-shadow: var(--shadow-sm);
}
.chat-bubble-user {
  background: var(--navy);
  color: var(--white);
  border-bottom-right-radius: 4px;
}

.chat-input-area {
  display: flex;
  gap: 8px;
  padding: 12px 12px;
  border-top: 1px solid var(--border);
  background: var(--white);
}
.chat-input {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 10px 14px;
  font-size: 0.84rem;
  color: var(--text-1);
  outline: none;
  transition: border-color var(--trans), background var(--trans);
}
.chat-input:focus { border-color: var(--navy-light); background: var(--white); }
.chat-send-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--trans), transform var(--trans);
}
.chat-send-btn:hover { background: var(--navy-dark); transform: scale(1.05); }
.chat-send-btn:active { transform: scale(0.95); }

/* ════════════════════════════════════
   RESPONSIVE — Tablet / Desktop
   ════════════════════════════════════ */
@media (min-width: 481px) {
  .main-content {
    padding-left: 16px;
    padding-right: 16px;
  }
  .hero-bg { border-radius: 0 0 var(--radius-lg) var(--radius-lg); }
  .quick-info-cards { margin-top: -24px; }
  .links-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 768px) {
  body { overflow: hidden; }
  .screen-home { overflow-y: auto; }
  .main-content { max-width: 560px; padding: 0 0 120px; }
  .hero-bg { padding: 36px 28px 40px; }
  .faq-grid { grid-template-columns: repeat(3, 1fr); }
  .chat-window { max-width: 360px; height: 520px; }
  .nav-panel { max-width: 360px; }
}

/* ─── Safe area (notch, home indicator) ─── */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .chatbot-container { bottom: calc(24px + env(safe-area-inset-bottom)); }
  .chat-input-area { padding-bottom: calc(12px + env(safe-area-inset-bottom)); }
  .nav-panel-footer { padding-bottom: calc(20px + env(safe-area-inset-bottom)); }
}

/* ─── Focus visible ─── */
:focus-visible { outline: 2px solid var(--navy-light); outline-offset: 2px; }