/* =========================================================
   SEA & SAND CÁT BÀ RESIDENCES – Main Stylesheet
   ========================================================= */

:root {
  --ocean:      #0077b6;
  --ocean-dark: #023e8a;
  --ocean-light:#00b4d8;
  --sand:       #f4a261;
  --sand-light: #fde8d0;
  --green:      #2d9e6b;
  --green-light:#d1f0e2;
  --amber:      #f59e0b;
  --amber-light:#fef3c7;
  --purple:     #7c3aed;
  --purple-light:#ede9fe;
  --text:       #1e293b;
  --text-muted: #64748b;
  --bg:         #f0f6ff;
  --white:      #ffffff;
  --card-shadow:0 4px 24px rgba(0,119,182,.10);
  --radius:     14px;
  --radius-sm:  8px;
  --transition: .28s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Be Vietnam Pro', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.65;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 999;
  background: rgba(2, 62, 138, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.12);
  transition: background var(--transition);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}
.logo-wrap { display: flex; align-items: center; gap: 12px; }
.logo-icon {
  width: 42px; height: 42px;
  background: linear-gradient(135deg,var(--ocean-light),var(--sand));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: #fff;
}
.logo-title { display: block; font-weight: 700; font-size: 1rem; color: #fff; }
.logo-sub   { display: block; font-size: .7rem; color: rgba(255,255,255,.7); }

.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,.85);
  font-size: .86rem; font-weight: 500;
  transition: background var(--transition), color var(--transition);
  display: flex; align-items: center; gap: 6px;
}
.nav-link:hover { background: rgba(255,255,255,.15); color: #fff; }
.nav-link.active { background: rgba(255,255,255,.2); color: #fff; }
.nav-admin {
  background: var(--sand);
  color: #fff !important;
  margin-left: 6px;
}
.nav-admin:hover { background: #e08a3c; }

.hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.hamburger span { width: 24px; height: 2px; background: #fff; border-radius: 2px; display: block; transition: var(--transition); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  min-height: 100vh;
  background: linear-gradient(160deg, #023e8a 0%, #0077b6 45%, #00b4d8 80%, #90e0ef 100%);
  display: flex; align-items: center;
  position: relative;
  padding-top: 66px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-overlay {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 60% 40%, rgba(0,180,216,.25) 0%, transparent 70%);
}
.hero-content {
  position: relative; z-index: 2;
  text-align: center;
  padding: 60px 20px 120px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  color: #fff; padding: 5px 16px; border-radius: 99px;
  font-size: .8rem; font-weight: 600; letter-spacing: .05em;
  margin-bottom: 20px; backdrop-filter: blur(6px);
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800; color: #fff;
  margin-bottom: 16px; line-height: 1.15;
}
.hero-desc {
  font-size: 1.05rem; color: rgba(255,255,255,.88);
  max-width: 600px; margin: 0 auto 36px;
}
.hero-desc strong { color: #fff; }

.hero-search-wrap {
  display: flex; gap: 8px; max-width: 560px; margin: 0 auto 12px;
}
.hero-search {
  flex: 1; padding: 14px 20px; border-radius: var(--radius);
  border: 2px solid rgba(255,255,255,.3);
  background: rgba(255,255,255,.18);
  backdrop-filter: blur(8px);
  color: #fff; font-size: .95rem;
  font-family: inherit; outline: none;
  transition: border-color var(--transition), background var(--transition);
}
.hero-search::placeholder { color: rgba(255,255,255,.6); }
.hero-search:focus { border-color: #fff; background: rgba(255,255,255,.28); }
.hero-search-btn {
  padding: 14px 24px; border-radius: var(--radius);
  background: var(--sand); color: #fff;
  border: none; cursor: pointer; font-weight: 700; font-size: .9rem;
  font-family: inherit; display: flex; align-items: center; gap: 7px;
  transition: background var(--transition), transform var(--transition);
}
.hero-search-btn:hover { background: #e08a3c; transform: translateY(-1px); }

.search-results {
  max-width: 560px; margin: 0 auto;
  background: #fff; border-radius: var(--radius);
  box-shadow: 0 10px 40px rgba(0,0,0,.18);
  overflow: hidden; text-align: left;
  max-height: 340px; overflow-y: auto;
}
.search-results.hidden { display: none; }
.search-result-item {
  padding: 12px 18px; cursor: pointer; border-bottom: 1px solid #f0f0f0;
  display: flex; align-items: flex-start; gap: 12px;
  transition: background var(--transition);
}
.search-result-item:hover { background: var(--bg); }
.search-result-icon { color: var(--ocean); font-size: 1.1rem; margin-top: 2px; }
.search-result-title { font-weight: 600; color: var(--text); font-size: .9rem; }
.search-result-sub { font-size: .78rem; color: var(--text-muted); }
.search-empty { padding: 20px; text-align: center; color: var(--text-muted); }

.hero-cards {
  display: flex; flex-wrap: wrap; gap: 14px;
  justify-content: center; margin-top: 44px;
}
.hero-card {
  background: rgba(255,255,255,.13);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius);
  padding: 16px 28px;
  color: #fff; font-weight: 600; font-size: .9rem;
  display: flex; align-items: center; gap: 10px;
  backdrop-filter: blur(8px);
  transition: background var(--transition), transform var(--transition);
}
.hero-card:hover { background: rgba(255,255,255,.25); transform: translateY(-3px); }
.hero-card i { font-size: 1.2rem; }

.hero-waves {
  position: absolute; bottom: 0; left: 0; right: 0;
}
.hero-waves svg { display: block; width: 100%; height: 80px; }

/* =========================================================
   SECTION COMMONS
   ========================================================= */
.section {
  padding: 80px 0;
}
.section:nth-child(even) { background: #fff; }

.section-header {
  display: flex; align-items: flex-start; gap: 20px;
  margin-bottom: 40px;
}
.section-icon {
  width: 58px; height: 58px; border-radius: 14px;
  background: linear-gradient(135deg, var(--ocean), var(--ocean-light));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: #fff; flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(0,119,182,.3);
}
.section-icon.accent-green  { background: linear-gradient(135deg, var(--green), #34d399); box-shadow: 0 4px 16px rgba(45,158,107,.3); }
.section-icon.accent-amber  { background: linear-gradient(135deg, var(--amber), #fbbf24); box-shadow: 0 4px 16px rgba(245,158,11,.3); }
.section-icon.accent-purple { background: linear-gradient(135deg, var(--purple), #a78bfa); box-shadow: 0 4px 16px rgba(124,58,237,.3); }

.section-label { font-size: .75rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--ocean); margin-bottom: 4px; }
.section-title { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; color: var(--text); margin-bottom: 6px; }
.section-desc  { color: var(--text-muted); max-width: 560px; }

/* =========================================================
   FILTER BAR
   ========================================================= */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px;
}
.filter-btn {
  padding: 7px 18px; border-radius: 99px;
  border: 1.5px solid #dde6f0;
  background: #fff; color: var(--text-muted);
  cursor: pointer; font-size: .84rem; font-weight: 600;
  font-family: inherit; transition: var(--transition);
}
.filter-btn:hover  { border-color: var(--ocean); color: var(--ocean); }
.filter-btn.active { background: var(--ocean); border-color: var(--ocean); color: #fff; }

/* =========================================================
   REGULATIONS GRID
   ========================================================= */
.reg-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 22px;
}
.reg-card {
  background: #fff;
  border: 1px solid #e2ecf7;
  border-radius: var(--radius);
  padding: 24px;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
}
.reg-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--ocean);
  border-radius: var(--radius) 0 0 var(--radius);
}
.reg-card:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,119,182,.16); }
.reg-card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.reg-card-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--bg); display: flex; align-items: center;
  justify-content: center; font-size: 1.2rem; flex-shrink: 0;
}
.reg-badge {
  font-size: .7rem; font-weight: 700; padding: 3px 10px;
  border-radius: 99px; white-space: nowrap;
}
.badge-new    { background: #dcfce7; color: #16a34a; }
.badge-update { background: #fef3c7; color: #d97706; }
.badge-info   { background: #e0f2fe; color: #0369a1; }
.reg-card-title { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.reg-card-desc  { font-size: .84rem; color: var(--text-muted); line-height: 1.6; }
.reg-card-footer { margin-top: 16px; display: flex; justify-content: space-between; align-items: center; }
.reg-card-date  { font-size: .75rem; color: var(--text-muted); }
.reg-read-more  { font-size: .8rem; color: var(--ocean); font-weight: 600; display: flex; align-items: center; gap: 5px; }

/* =========================================================
   SERVICES
   ========================================================= */
.hotline-banner {
  background: linear-gradient(135deg, var(--ocean-dark), var(--ocean));
  border-radius: var(--radius);
  padding: 24px 32px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 20px;
  margin-bottom: 40px;
  box-shadow: 0 8px 30px rgba(2,62,138,.25);
}
.hotline-main { display: flex; align-items: center; gap: 16px; }
.hotline-main > i { font-size: 2rem; color: var(--sand); }
.hotline-label { color: rgba(255,255,255,.8); font-size: .85rem; margin-bottom: 3px; }
.hotline-number { font-size: 1.8rem; font-weight: 800; color: #fff; letter-spacing: .03em; }
.hotline-email {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  color: #fff; padding: 10px 20px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: .9rem;
  transition: background var(--transition);
}
.hotline-email:hover { background: rgba(255,255,255,.2); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.service-card {
  background: #fff;
  border: 1px solid #e2ecf7;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.service-card:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,119,182,.14); }
.service-card-icon {
  width: 52px; height: 52px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: #fff; margin-bottom: 16px;
}
.service-card-title { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.service-card-desc  { font-size: .84rem; color: var(--text-muted); margin-bottom: 16px; }
.service-hotline-item { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.service-hotline-item i { color: var(--ocean); width: 16px; }
.service-hotline-item a { font-weight: 600; color: var(--ocean); }
.service-hotline-item span { font-size: .82rem; color: var(--text-muted); }

/* =========================================================
   FAQ
   ========================================================= */
.faq-section { background: var(--bg); }

.faq-search-bar {
  display: flex; align-items: center; gap: 12px;
  background: #fff; border: 1.5px solid #dde6f0; border-radius: var(--radius);
  padding: 12px 18px; margin-bottom: 20px;
}
.faq-search-bar i { color: var(--text-muted); }
.faq-search-bar input {
  flex: 1; border: none; outline: none;
  font-family: inherit; font-size: .95rem; color: var(--text);
  background: transparent;
}

.faq-categories {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px;
}
.faq-cat-btn {
  padding: 7px 18px; border-radius: 99px;
  border: 1.5px solid #dde6f0;
  background: #fff; color: var(--text-muted);
  cursor: pointer; font-size: .84rem; font-weight: 600;
  font-family: inherit; transition: var(--transition);
}
.faq-cat-btn:hover  { border-color: var(--amber); color: var(--amber); }
.faq-cat-btn.active { background: var(--amber); border-color: var(--amber); color: #fff; }

.faq-list { margin-bottom: 40px; }
.faq-item {
  background: #fff; border-radius: var(--radius);
  border: 1px solid #e2ecf7; margin-bottom: 12px;
  overflow: hidden; box-shadow: var(--card-shadow);
  transition: box-shadow var(--transition);
}
.faq-item:hover { box-shadow: 0 6px 24px rgba(0,119,182,.12); }
.faq-question {
  width: 100%; padding: 18px 22px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: none; border: none; cursor: pointer;
  font-family: inherit; font-size: .95rem; font-weight: 600; color: var(--text);
  text-align: left; transition: background var(--transition);
}
.faq-question:hover { background: #f7fbff; }
.faq-question-text { flex: 1; }
.faq-question-cat {
  font-size: .7rem; font-weight: 700; padding: 3px 10px;
  border-radius: 99px; white-space: nowrap;
  background: var(--amber-light); color: var(--amber);
}
.faq-chevron { transition: transform var(--transition); color: var(--text-muted); }
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height .35s ease, padding var(--transition);
  border-top: 1px solid transparent;
}
.faq-item.open .faq-answer {
  max-height: 600px;
  border-top-color: #e2ecf7;
}
.faq-answer-inner {
  padding: 18px 22px;
  font-size: .9rem; color: var(--text-muted); line-height: 1.8;
}
.faq-answer-inner strong { color: var(--text); }
.faq-answer-inner a { color: var(--ocean); }

.faq-submit-wrap {
  text-align: center; display: flex; flex-direction: column; align-items: center; gap: 14px;
  color: var(--text-muted);
}

/* =========================================================
   CHATBOT – Phân hệ D (Single Card)
   ========================================================= */
.chatbot-section { background: #fff; }

/* ── Card 2 cột ── */
.chatbot-single-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1.5px solid #dde6f0;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,119,182,.10);
}

/* ── Cột trái (gradient xanh) ── */
.chatbot-card-left {
  background: linear-gradient(160deg, #023e8a 0%, #0077b6 55%, #00b4d8 100%);
  padding: 44px 40px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
  overflow: hidden;
  /* Đảm bảo content nằm trên pseudo-elements */
  isolation: isolate;
}
.chatbot-card-left::before {
  content: '';
  position: absolute; top: -60px; right: -60px;
  width: 200px; height: 200px; border-radius: 50%;
  background: rgba(255,255,255,.06);
  z-index: -1;
}
.chatbot-card-left::after {
  content: '';
  position: absolute; bottom: -40px; left: -30px;
  width: 150px; height: 150px; border-radius: 50%;
  background: rgba(255,255,255,.04);
  z-index: -1;
}

/* Logo icon */
.chatbot-card-logo {
  width: 58px;
  height: 58px;
  border-radius: 14px;
  background: rgba(255,255,255,.18);
  border: 1.5px solid rgba(255,255,255,.25);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.chatbot-card-logo i {
  font-size: 1.6rem;
  color: #fff;
  line-height: 1;
}

.chatbot-card-left h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin: 0;
}
.chatbot-card-left > p {
  font-size: .88rem;
  color: rgba(255,255,255,.85);
  line-height: 1.7;
  margin: 0;
}
.chatbot-card-left strong { color: #fff; }

.chatbot-card-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 0;
}
.chatbot-card-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .86rem;
  color: rgba(255,255,255,.92);
}
.chatbot-card-features li i {
  color: #5eead4;
  font-size: .85rem;
  flex-shrink: 0;
  width: 14px;
}

.chatbot-card-note {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  background: rgba(0,0,0,.18);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 10px;
  padding: 11px 14px;
  font-size: .77rem;
  color: rgba(255,255,255,.72);
  margin-top: auto;
}
.chatbot-card-note i {
  color: rgba(255,255,255,.55);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ── Cột phải (trắng) ── */
.chatbot-card-right {
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  background: #f6faff;
}

/* Preview chat bubbles */
.chatbot-preview-bubble {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.preview-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--purple), #a78bfa);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: .85rem;
}
.preview-messages {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  min-width: 0;
}
.preview-msg {
  border-radius: 14px;
  padding: 10px 14px;
  font-size: .82rem;
  line-height: 1.55;
  word-break: break-word;
}
.preview-msg.bot {
  background: #fff;
  color: var(--text);
  border: 1px solid #e2ecf7;
  border-bottom-left-radius: 3px;
  box-shadow: 0 2px 8px rgba(0,0,0,.05);
  max-width: 92%;
}
.preview-msg.user {
  background: linear-gradient(135deg, var(--ocean), var(--ocean-light));
  color: #fff;
  border-bottom-right-radius: 3px;
  align-self: flex-end;
  max-width: 82%;
}

/* Nút mở ChatGPT */
.chatbot-open-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 15px 20px;
  background: linear-gradient(135deg, #10a37f, #0d8f6f);
  border: none;
  border-radius: 14px;
  cursor: pointer;
  box-shadow: 0 6px 22px rgba(16,163,127,.32);
  transition: transform .22s ease, box-shadow .22s ease;
  text-align: left;
  text-decoration: none;
}
.chatbot-open-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(16,163,127,.42);
}
.chatbot-open-btn:active { transform: translateY(0); }

.chatbot-open-btn .btn-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(255,255,255,.2);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.chatbot-open-btn .btn-icon i {
  font-size: 1.15rem;
  color: #fff;
  line-height: 1;
}
.chatbot-open-btn .btn-text {
  flex: 1;
  min-width: 0;
}
.chatbot-open-btn .btn-text strong {
  display: block;
  font-size: .96rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.chatbot-open-btn .btn-text small {
  font-size: .75rem;
  color: rgba(255,255,255,.75);
  display: block;
  margin-top: 2px;
}
.chatbot-open-btn .btn-arrow {
  color: rgba(255,255,255,.7);
  font-size: .85rem;
  flex-shrink: 0;
}

/* Quick chips */
.quick-title {
  font-size: .78rem;
  font-weight: 700;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
}
.quick-title i { color: var(--amber); }

.quick-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.quick-chips button {
  padding: 7px 13px;
  border-radius: 99px;
  border: 1.5px solid #dde6f0;
  background: #fff;
  color: var(--text);
  cursor: pointer;
  font-size: .78rem;
  font-weight: 500;
  font-family: inherit;
  transition: background .2s, border-color .2s, color .2s, transform .2s;
  line-height: 1.4;
}
.quick-chips button:hover {
  background: #10a37f;
  border-color: #10a37f;
  color: #fff;
  transform: translateY(-1px);
}

/* ── Responsive ── */
@media (max-width: 800px) {
  .chatbot-single-card {
    grid-template-columns: 1fr;
  }
  .chatbot-card-left  { padding: 30px 24px; }
  .chatbot-card-right { padding: 28px 24px; }
}
@media (max-width: 480px) {
  .chatbot-card-left  { padding: 24px 20px; }
  .chatbot-card-right { padding: 22px 18px; }
  .chatbot-open-btn   { padding: 13px 16px; }
  .quick-chips button { font-size: .74rem; padding: 6px 11px; }
}

/* ── Legacy styles giữ lại để không lỗi CSS ── */
.chatbot-why-notice {
  display: flex; gap: 14px; align-items: flex-start;
  background: #fffbeb; border: 1.5px solid #fcd34d;
  border-radius: var(--radius); padding: 16px 20px;
  margin-bottom: 32px; position: relative;
}
.why-icon { font-size: 1.3rem; color: #d97706; flex-shrink: 0; margin-top: 2px; }
.why-body { font-size: .86rem; color: #78350f; line-height: 1.7; }
.why-body strong { color: #92400e; }
.why-body em { font-style: normal; font-weight: 600; }
.why-body code { background: #fef3c7; padding: 1px 6px; border-radius: 4px; font-family: monospace; font-size: .82rem; }
.why-dismiss {
  position: absolute; top: 10px; right: 12px;
  background: none; border: none; cursor: pointer;
  color: #d97706; font-size: 1rem; padding: 4px;
}

/* ── 3 Option Cards ── */
.chatbot-options-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.cb-option-card {
  background: #fff;
  border: 1.5px solid #e2ecf7;
  border-radius: var(--radius);
  padding: 26px 22px;
  box-shadow: var(--card-shadow);
  display: flex; flex-direction: column; gap: 12px;
  position: relative; overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.cb-option-card:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(0,0,0,.10); }
.option-primary { border-top: 4px solid #10a37f; }
.option-secondary { border-top: 4px solid var(--purple); }
.option-tertiary { border-top: 4px solid var(--amber); }

.cb-option-badge {
  display: inline-flex; align-items: center;
  font-size: .7rem; font-weight: 700; padding: 3px 10px;
  border-radius: 99px; width: fit-content;
}
.cb-option-badge.best    { background: #d1fae5; color: #065f46; }
.cb-option-badge.power   { background: var(--purple-light); color: var(--purple); }
.cb-option-badge.free    { background: var(--amber-light); color: #92400e; }

.cb-option-icon {
  width: 54px; height: 54px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.cb-option-card h3 { font-size: 1rem; font-weight: 700; color: var(--text); }
.cb-option-card p  { font-size: .84rem; color: var(--text-muted); line-height: 1.65; }

.cb-option-pros { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.cb-option-pros li { font-size: .82rem; color: var(--text-muted); display: flex; align-items: center; gap: 7px; }
.cb-option-pros li i { color: #10a37f; width: 14px; flex-shrink: 0; }

/* Config inputs */
.cb-option-config { display: flex; gap: 8px; }
.cb-config-input {
  flex: 1; border: 1.5px solid #dde6f0; border-radius: var(--radius-sm);
  padding: 9px 12px; font-family: inherit; font-size: .82rem;
  outline: none; transition: border-color var(--transition);
  min-width: 0;
}
.cb-config-input:focus { border-color: #10a37f; }
.btn-save-small {
  padding: 9px 14px; border-radius: var(--radius-sm);
  background: #10a37f; color: #fff; border: none; cursor: pointer;
  font-size: .8rem; font-weight: 700; font-family: inherit; white-space: nowrap;
  display: flex; align-items: center; gap: 5px;
  transition: opacity var(--transition);
}
.btn-save-small:hover { opacity: .85; }
.btn-save-small.full { width: 100%; justify-content: center; margin-top: 8px; }
.btn-edit-small {
  background: none; border: 1.5px solid #dde6f0; border-radius: 6px;
  padding: 4px 8px; cursor: pointer; color: var(--text-muted); font-size: .8rem;
  transition: var(--transition);
}
.btn-edit-small:hover { border-color: var(--ocean); color: var(--ocean); }

.cb-saved-url {
  display: flex; align-items: center; gap: 8px;
  background: #f0fdf4; border: 1px solid #bbf7d0;
  border-radius: var(--radius-sm); padding: 8px 12px;
  font-size: .8rem; color: #065f46;
}
.cb-saved-url i { color: #10a37f; }

.api-key-row {
  display: flex; gap: 8px; align-items: center;
}
.api-key-row .cb-config-input { flex: 1; }
.btn-toggle-key {
  width: 36px; height: 36px; border: 1.5px solid #dde6f0; border-radius: var(--radius-sm);
  background: #fff; cursor: pointer; color: var(--text-muted);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: var(--transition);
}
.btn-toggle-key:hover { border-color: var(--purple); color: var(--purple); }
.api-key-note { font-size: .75rem; color: var(--text-muted); margin-top: 6px; display: flex; gap: 5px; align-items: flex-start; }
.api-key-note i { color: var(--green); margin-top: 2px; flex-shrink: 0; }
.api-key-note code { font-family: monospace; }

/* Action buttons */
.cb-option-action {
  margin-top: auto; padding: 12px 16px; border-radius: var(--radius);
  background: linear-gradient(135deg, #10a37f, #1daa7c);
  color: #fff; border: none; cursor: pointer;
  font-family: inherit; font-size: .88rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  transition: opacity var(--transition), transform var(--transition);
  box-shadow: 0 4px 14px rgba(16,163,127,.3);
}
.cb-option-action:hover { opacity: .88; transform: translateY(-1px); }
.cb-option-action.btn-amber {
  background: linear-gradient(135deg, var(--amber), #fbbf24);
  box-shadow: 0 4px 14px rgba(245,158,11,.3);
}

/* ── Chat Full Panel ── */
.chat-full-panel {
  background: var(--bg);
  border: 1.5px solid #dde6f0;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 32px;
  box-shadow: var(--card-shadow);
}
.chat-panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; background: #fff; border-bottom: 1px solid #dde6f0;
}
.chat-panel-title { display: flex; align-items: center; gap: 12px; }
.chat-avatar-sm {
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), #a78bfa);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: .85rem; flex-shrink: 0;
}
.chat-panel-title strong { font-size: .95rem; color: var(--text); display: block; }
.chat-mode-badge {
  font-size: .7rem; font-weight: 700; padding: 2px 9px;
  border-radius: 99px; display: inline-block; margin-top: 2px;
}
.chat-panel-actions { display: flex; gap: 8px; }
.chat-panel-actions button {
  padding: 7px 12px; border-radius: var(--radius-sm);
  border: 1.5px solid #dde6f0; background: #fff;
  cursor: pointer; font-size: .8rem; font-weight: 600;
  color: var(--text-muted); display: flex; align-items: center; gap: 6px;
  font-family: inherit; transition: var(--transition);
}
.chat-panel-actions button:hover { border-color: var(--ocean); color: var(--ocean); }

.chat-messages-wrap {
  height: 420px; overflow-y: auto; padding: 20px;
  display: flex; flex-direction: column; gap: 14px;
  scroll-behavior: smooth;
}
.chat-msg-row { display: flex; gap: 10px; align-items: flex-end; }
.chat-msg-row.user-row { flex-direction: row-reverse; }
.chat-bubble {
  max-width: 78%; padding: 12px 16px; border-radius: 16px;
  font-size: .88rem; line-height: 1.7;
}
.bot-bubble {
  background: #fff; color: var(--text);
  border: 1px solid #e2ecf7; border-bottom-left-radius: 4px;
  box-shadow: 0 2px 10px rgba(0,0,0,.06);
}
.user-bubble {
  background: linear-gradient(135deg, var(--ocean), var(--ocean-light));
  color: #fff; border-bottom-right-radius: 4px; margin-left: auto;
}

.chat-quick-suggestions {
  display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 20px;
  border-top: 1px solid #eef2f8;
}
.chat-quick-suggestions button {
  padding: 7px 14px; border-radius: 99px;
  border: 1.5px solid var(--purple-light);
  background: #fff; color: var(--purple); cursor: pointer;
  font-size: .8rem; font-weight: 600; font-family: inherit;
  transition: var(--transition);
}
.chat-quick-suggestions button:hover { background: var(--purple); color: #fff; border-color: var(--purple); }

.chat-input-row {
  display: flex; gap: 8px; padding: 14px 20px;
  border-top: 1px solid #dde6f0; background: #fff;
}
.chat-input-row input {
  flex: 1; border: 1.5px solid #dde6f0; border-radius: var(--radius);
  padding: 11px 16px; font-family: inherit; font-size: .9rem;
  outline: none; transition: border-color var(--transition);
}
.chat-input-row input:focus { border-color: var(--purple); }
.chat-send-btn {
  width: 44px; height: 44px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--purple), #a78bfa);
  border: none; cursor: pointer; color: #fff; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: opacity var(--transition), transform var(--transition);
}
.chat-send-btn:hover { opacity: .85; transform: translateY(-1px); }

/* ── Info Row ── */
.chatbot-info-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.chatbot-kb-stats {
  background: var(--bg); border: 1px solid #dde6f0; border-radius: var(--radius); padding: 20px;
}
.kb-stats-mini {
  display: flex; gap: 16px; flex-wrap: wrap;
}
.kb-stat-mini {
  display: flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid #e2ecf7; border-radius: var(--radius-sm);
  padding: 10px 14px; font-size: .84rem; font-weight: 600; color: var(--text);
}
.kb-stat-mini i { color: var(--ocean); }

.chatbot-tips {
  background: var(--bg); border: 1px solid #dde6f0; border-radius: var(--radius); padding: 20px;
}
.chatbot-tips h4 { font-size: .9rem; font-weight: 700; color: var(--text); margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.chatbot-tips h4 i { color: var(--amber); }
.chatbot-tips ul { padding-left: 18px; }
.chatbot-tips li { font-size: .82rem; color: var(--text-muted); margin-bottom: 8px; line-height: 1.6; }
.chatbot-tips em { font-style: normal; color: var(--ocean); font-weight: 600; }

/* responsive chatbot */
@media (max-width: 900px) {
  .chatbot-options-grid { grid-template-columns: 1fr; }
  .chatbot-info-row { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .chatbot-options-grid { grid-template-columns: 1fr; }
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: var(--radius);
  background: linear-gradient(135deg, var(--ocean), var(--ocean-light));
  color: #fff; border: none; cursor: pointer;
  font-family: inherit; font-size: .9rem; font-weight: 700;
  transition: opacity var(--transition), transform var(--transition);
  box-shadow: 0 4px 16px rgba(0,119,182,.3);
}
.btn-primary:hover { opacity: .88; transform: translateY(-2px); }
.btn-primary.full-width { width: 100%; justify-content: center; }

/* =========================================================
   MODAL
   ========================================================= */
.modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(2,30,60,.6); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
  animation: fadeIn .2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: #fff; border-radius: var(--radius);
  padding: 36px; max-width: 540px; width: 100%;
  max-height: 90vh; overflow-y: auto;
  position: relative; box-shadow: 0 24px 60px rgba(0,0,0,.2);
  animation: slideUp .25s ease;
}
.modal-large { max-width: 720px; }
@keyframes slideUp { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--bg); border: none; cursor: pointer;
  font-size: 1rem; color: var(--text-muted); display: flex; align-items: center; justify-content: center;
  transition: background var(--transition);
}
.modal-close:hover { background: #fde8d0; color: var(--sand); }

.modal h3 {
  font-size: 1.2rem; font-weight: 700; margin-bottom: 24px;
  display: flex; align-items: center; gap: 10px;
  color: var(--text); padding-bottom: 16px; border-bottom: 1px solid #e2ecf7;
}
.modal h3 i { color: var(--ocean); }

.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: .84rem; font-weight: 600;
  color: var(--text); margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
  width: 100%; border: 1.5px solid #dde6f0; border-radius: var(--radius-sm);
  padding: 11px 14px; font-family: inherit; font-size: .9rem;
  outline: none; transition: border-color var(--transition);
  color: var(--text); resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--ocean); }

/* Regulation detail modal */
.reg-detail-badge { display: inline-flex; align-items: center; gap: 7px; margin-bottom: 12px; }
.reg-detail-title { font-size: 1.4rem; font-weight: 800; margin-bottom: 8px; color: var(--text); }
.reg-detail-meta { display: flex; gap: 16px; font-size: .8rem; color: var(--text-muted); margin-bottom: 24px; flex-wrap: wrap; }
.reg-detail-meta span { display: flex; align-items: center; gap: 5px; }
.reg-detail-body { font-size: .9rem; line-height: 1.9; color: #334155; }
.reg-detail-body h4 { font-weight: 700; margin: 18px 0 8px; color: var(--text); }
.reg-detail-body ul { padding-left: 20px; }
.reg-detail-body li { margin-bottom: 6px; }
.reg-detail-body p  { margin-bottom: 10px; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background: var(--ocean-dark);
  color: rgba(255,255,255,.8);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand { }
.footer-logo {
  font-size: 1.2rem; font-weight: 800; color: #fff;
  display: flex; align-items: center; gap: 10px; margin-bottom: 14px;
}
.footer-logo i { color: var(--ocean-light); }
.footer-brand p { font-size: .86rem; line-height: 1.75; }

.footer-col h5 { font-size: .9rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col a, .footer-col p {
  display: block; font-size: .85rem; color: rgba(255,255,255,.7);
  margin-bottom: 10px; transition: color var(--transition);
}
.footer-col a:hover { color: #fff; }
.footer-col p i { margin-right: 8px; color: var(--ocean-light); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 18px 0; text-align: center;
  font-size: .8rem; color: rgba(255,255,255,.5);
}

/* =========================================================
   BACK TO TOP
   ========================================================= */
.back-to-top {
  position: fixed; bottom: 28px; right: 28px; z-index: 900;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--ocean); color: #fff; border: none; cursor: pointer;
  font-size: 1rem; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 18px rgba(0,119,182,.35);
  transition: opacity var(--transition), transform var(--transition);
  opacity: 0; pointer-events: none;
}
.back-to-top.visible { opacity: 1; pointer-events: all; }
.back-to-top:hover { transform: translateY(-3px); }

/* =========================================================
   TOAST NOTIFICATION
   ========================================================= */
.toast {
  position: fixed; bottom: 80px; right: 28px; z-index: 3000;
  background: var(--ocean-dark); color: #fff;
  padding: 14px 22px; border-radius: var(--radius-sm);
  font-size: .88rem; font-weight: 500;
  box-shadow: 0 8px 28px rgba(0,0,0,.2);
  display: flex; align-items: center; gap: 10px;
  animation: toastIn .3s ease;
}
.toast.success { background: var(--green); }
.toast.error   { background: #ef4444; }
@keyframes toastIn { from { transform: translateX(80px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px) {
  .chatbot-layout { grid-template-columns: 1fr; }
  .chatbot-sidebar { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .main-nav { display: none; flex-direction: column; position: fixed; inset: 66px 0 0 0; background: var(--ocean-dark); padding: 20px; gap: 6px; z-index: 998; }
  .main-nav.open { display: flex; }
  .nav-link { font-size: 1rem; padding: 12px 18px; }
  .hamburger { display: flex; }
  .hero-search-wrap { flex-direction: column; }
  .hero-card { padding: 12px 18px; font-size: .82rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .hotline-banner { flex-direction: column; align-items: flex-start; }
  .section-header { flex-direction: column; }
}

/* Typing dots */
.typing-dot {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--text-muted); margin: 0 2px;
  animation: bounce .9s infinite;
}
.typing-dot:nth-child(2) { animation-delay: .15s; }
.typing-dot:nth-child(3) { animation-delay: .3s; }
@keyframes bounce { 0%,80%,100% { transform: translateY(0); } 40% { transform: translateY(-6px); } }

/* FLOATING CHATBOT */
.floating-chat-btn { position: fixed; bottom: 30px; right: 30px; width: 64px; height: 64px; background: var(--ocean); color: white; border-radius: 50%; border: none; box-shadow: 0 6px 20px rgba(0,0,0,0.2); font-size: 26px; cursor: pointer; z-index: 2000; display: flex; align-items: center; justify-content: center; transition: 0.3s; animation: chat-bounce 3s infinite; }
.floating-chat-btn:hover { background: var(--ocean-dark); transform: scale(1.1); }
.chatbot-panel { position: fixed; bottom: 105px; right: 30px; width: 380px; max-width: calc(100vw - 60px); height: 520px; max-height: calc(100vh - 150px); background: white; border-radius: 20px; box-shadow: 0 15px 40px rgba(0,0,0,0.2); display: flex; flex-direction: column; overflow: hidden; z-index: 2000; border: 1px solid #e2e8f0; animation: slideUp 0.3s ease-out; }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.chatbot-header { background: linear-gradient(135deg, var(--ocean-dark), var(--ocean)); color: white; padding: 16px 20px; font-weight: 700; display: flex; justify-content: space-between; align-items: center; }
.chatbot-close { background: rgba(255,255,255,0.2); border: none; color: white; width: 30px; height: 30px; border-radius: 50%; cursor: pointer; }
.chatbot-body { flex: 1; padding: 20px; overflow-y: auto; background: #fdfdfd; display: flex; flex-direction: column; gap: 15px; }
.chat-message { max-width: 85%; padding: 12px 16px; border-radius: 15px; font-size: 14px; line-height: 1.6; }
.bot-message { background: #f1f5fb; align-self: flex-start; color: var(--text); border-bottom-left-radius: 2px; }
.user-message { background: var(--ocean); color: white; align-self: flex-end; border-bottom-right-radius: 2px; }
.chatbot-footer { display: flex; padding: 15px; border-top: 1px solid #eee; background: white; }
.chatbot-footer input { flex: 1; padding: 12px 18px; border: 1px solid #e2e8f0; border-radius: 25px; outline: none; }
.chatbot-footer button { background: var(--ocean); color: white; border: none; width: 45px; height: 45px; border-radius: 50%; margin-left: 10px; cursor: pointer; }
.chat-typing { font-size: 12px; color: #94a3b8; font-style: italic; }
@keyframes chat-bounce { 0%, 20%, 50%, 80%, 100% { transform: translateY(0); } 40% { transform: translateY(-10px); } 60% { transform: translateY(-5px); } }

/* FAQ attachment inside expanded answer */
.faq-answer-file {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed #dbe7f3;
}
.faq-answer-file a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  text-decoration: none;
}