/* =========================================================
   Bollakkarai.online — Design System
   ========================================================= */
:root {
  --bg: #f7fafc;
  --surface: #ffffff;
  --surface-2: #f0f4f8;
  --text: #10243e;
  --muted: #5b6b7b;
  --primary: #0d6efd;
  --primary-dark: #0a58ca;
  --primary-soft: #e7f0ff;
  --accent: #10b981;
  --danger: #dc3545;
  --warning: #f59e0b;
  --border: #e3e8ee;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 4px 18px rgba(16, 36, 62, 0.06);
  --shadow-md: 0 10px 30px rgba(16, 36, 62, 0.10);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 18px; }
.container-narrow { max-width: 860px; margin: 0 auto; padding: 0 18px; }

/* =============== Buttons =============== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 18px; border-radius: 10px;
  border: 1px solid transparent; background: var(--primary); color: #fff;
  font-size: 15px; font-weight: 600; cursor: pointer; transition: .15s ease;
  text-decoration: none; line-height: 1.2;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn--primary { background: var(--primary); color: #fff; }
.btn--outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn--ghost   { background: var(--surface-2); color: var(--text); border-color: var(--border); }
.btn--danger  { background: var(--danger); }
.btn--sm { padding: 7px 12px; font-size: 13px; border-radius: 8px; }
.btn--lg { padding: 14px 24px; font-size: 17px; border-radius: 12px; }
.btn--block { width: 100%; }

/* =============== Header =============== */
.site-header {
  background: #fff; border-bottom: 1px solid var(--border);
  /* NOTE: intentionally NOT sticky per spec */
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; gap: 18px;
}
.brand { font-weight: 800; font-size: 20px; color: var(--primary); letter-spacing: -.2px; }
.brand span { color: var(--text); }
.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 22px; flex-wrap: wrap; }
.main-nav a { color: var(--text); font-weight: 500; font-size: 15px; }
.main-nav a:hover { color: var(--primary); }
.nav-toggle { display: none; background: none; border: 0; font-size: 22px; cursor: pointer; }
@media (max-width: 900px) {
  .main-nav { display: none; }
  .main-nav.open { display: block; position: absolute; left: 0; right: 0; top: 100%; background: #fff; border-bottom: 1px solid var(--border); padding: 12px 18px; z-index: 30; }
  .main-nav.open ul { flex-direction: column; gap: 12px; }
  .nav-toggle { display: block; }
}

/* =============== Hero =============== */
.hero {
  padding: 56px 0 32px;
  background: linear-gradient(180deg, #eef6ff 0%, #f7fafc 100%);
}
.hero h1 { font-size: 40px; line-height: 1.15; margin: 0 0 12px; letter-spacing: -.5px; }
.hero p.lead { font-size: 18px; color: var(--muted); margin: 0 0 22px; max-width: 620px; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }
@media (max-width: 600px) {
  .hero h1 { font-size: 30px; }
  .hero p.lead { font-size: 16px; }
}

/* =============== Cards / Sections =============== */
.section { padding: 48px 0; }
.section h2 { font-size: 26px; margin: 0 0 8px; letter-spacing: -.3px; }
.section p.section-sub { color: var(--muted); margin: 0 0 24px; }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow);
}
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.cat-card {
  display: flex; align-items: center; gap: 12px;
  padding: 16px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); transition: .15s;
  color: var(--text); text-decoration: none;
}
.cat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); text-decoration: none; }
.cat-card__icon { width: 42px; height: 42px; border-radius: 10px; background: var(--primary-soft); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 20px; }
.cat-card__label { font-weight: 600; }

/* =============== Chat UI =============== */
.chat-shell {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: flex; flex-direction: column;
  max-height: 640px;
}
.chat-messages {
  flex: 1; overflow-y: auto; padding: 18px;
  background: #f8fbff;
  min-height: 320px;
}
.chat-bubble { display: flex; flex-direction: column; margin-bottom: 14px; max-width: 92%; }
.chat-bubble--user { margin-left: auto; align-items: flex-end; }
.chat-bubble--assistant { margin-right: auto; align-items: flex-start; }
.chat-bubble__inner {
  padding: 12px 15px; border-radius: 16px; font-size: 15px;
  box-shadow: 0 1px 2px rgba(16,36,62,.04);
}
.chat-bubble--user .chat-bubble__inner { background: var(--primary); color: #fff; border-bottom-right-radius: 6px; }
.chat-bubble--assistant .chat-bubble__inner { background: #fff; border: 1px solid var(--border); border-bottom-left-radius: 6px; }
.chat-bubble__meta { font-size: 11px; color: var(--muted); margin: 4px 4px 0; }

.chat-bubble--typing .chat-bubble__inner { display: inline-flex; gap: 4px; padding: 14px 16px; }
.dot { width: 7px; height: 7px; background: #98a6b5; border-radius: 50%; display: inline-block; animation: blink 1.2s infinite; }
.dot:nth-child(2) { animation-delay: .2s; }
.dot:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%,80%,100% { opacity:.2 } 40% { opacity: 1 } }

.chat-suggestions { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text); padding: 7px 12px; border-radius: 999px;
  font-size: 13px; cursor: pointer; transition: .15s;
}
.chip:hover { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }

.chat-form {
  display: flex; gap: 10px; padding: 12px;
  border-top: 1px solid var(--border); background: #fff;
}
.chat-form input[type="text"] {
  flex: 1; padding: 13px 14px; border-radius: 10px;
  border: 1px solid var(--border); font-size: 15px; font-family: inherit;
  background: #fbfcfe;
}
.chat-form input[type="text"]:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }
.chat-form .btn { padding: 12px 18px; }

.chat-toolbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 16px; background: #fff; border-bottom: 1px solid var(--border);
  gap: 10px;
}
.chat-toolbar__title { font-weight: 700; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.chat-toolbar__dot { width: 9px; height: 9px; background: var(--accent); border-radius: 50%; display: inline-block; }
.chat-toolbar__actions { display: flex; gap: 8px; }
.chat-toolbar__actions button {
  background: none; border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 10px; cursor: pointer; font-size: 13px; color: var(--text);
}
.chat-toolbar__actions button:hover { background: var(--surface-2); }

/* =============== Result cards =============== */
.result-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; margin-top: 12px; }
.result-card {
  background: #fff; border: 1px solid var(--border);
  border-radius: 12px; padding: 12px; font-size: 14px;
}
.result-card__header { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.result-card__title { font-weight: 700; font-size: 14px; }
.result-card__type { font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); background: var(--surface-2); border-radius: 6px; padding: 3px 6px; }
.result-card__specialty { color: var(--primary); font-weight: 600; font-size: 12.5px; margin-top: 4px; }
.result-card__address { color: var(--muted); font-size: 12.5px; margin-top: 6px; }
.result-card__badges { margin-top: 8px; }
.badge { display: inline-block; padding: 3px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.badge--distance { background: var(--primary-soft); color: var(--primary); }
.result-card__actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }

/* =============== Footer =============== */
.site-footer {
  background: #0f1d33; color: #cbd5e1; margin-top: 48px; padding: 40px 0 20px;
}
.site-footer a { color: #cbd5e1; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px; }
.footer-grid h4 { color: #fff; margin: 0 0 12px; font-size: 14px; text-transform: uppercase; letter-spacing: .6px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 6px; }
.footer-bottom { border-top: 1px solid #1e2f4a; margin-top: 24px; padding-top: 14px; font-size: 13px; color: #94a3b8; display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }

/* =============== Notice =============== */
.notice {
  background: #fff7ed; border: 1px solid #fed7aa; color: #9a3412;
  padding: 14px 16px; border-radius: 12px; font-size: 14px;
}
.notice--info { background: var(--primary-soft); border-color: #bfdbfe; color: #1e3a8a; }

/* =============== Forms =============== */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 11px 12px; border-radius: 10px;
  border: 1px solid var(--border); font-size: 15px; font-family: inherit;
  background: #fff;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: 2px solid var(--primary-soft); border-color: var(--primary);
}
.form-error { color: var(--danger); font-size: 13px; margin-top: 4px; }

/* =============== Utility =============== */
.text-muted { color: var(--muted); }
.mt-0 { margin-top: 0; } .mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; } .mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; }
.text-center { text-align: center; }
.hidden { display: none !important; }

/* Accessibility */
:focus-visible { outline: 3px solid rgba(13,110,253,.4); outline-offset: 2px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }