@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@400;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,400&display=swap');

/* ─── TOKENS ─── */
:root {
  --bg: #FAFAF9;
  --bg-secondary: #F3F3F1;
  --text: #111111;
  --text-secondary: #5C5C5C;
  --text-tertiary: #A0A09A;
  --border: #E5E5E3;
  --border-hover: #C8C8C4;
  --accent: #EF4B1C;
  --accent-hover: #D43C10;

  /* Tag tokens */
  --c-beginner: #2563EB;    --bg-beginner: #EFF6FF;
  --c-intermediate: #B45309; --bg-intermediate: #FFFBEB;
  --c-advanced: #DC2626;    --bg-advanced: #FEF2F2;
  --c-allevels: #525252;    --bg-allevels: #F5F5F4;
  --c-special: #6D28D9;     --bg-special: #F5F3FF;

  /* Registration badge tokens */
  --c-walkin: #16A34A;    --bg-walkin: #F0FDF4;
  --c-contact: #374151;   --bg-contact: #F9FAFB;
  --c-sms: #0369A1;       --bg-sms: #F0F9FF;
  --c-whatsapp: #15803D;  --bg-whatsapp: #DCFCE7;
  --c-wechat: #166534;    --bg-wechat: #DCFCE7;

  --max-w: 880px;
  --nav-h: 58px;
  --radius: 10px;
}

/* ─── RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; }
button { font-family: inherit; cursor: pointer; border: none; }

/* ─── NAV ─── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(250, 250, 249, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.wordmark {
  font-family: 'Kanit', sans-serif;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.04em;
  text-decoration: none;
  color: var(--text);
  user-select: none;
}
.wordmark .dot { color: var(--accent); }
.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-links a {
  font-size: 13.5px;
  font-weight: 400;
  color: var(--text-tertiary);
  text-decoration: none;
  padding: 5px 11px;
  border-radius: 7px;
  transition: color 0.12s, background 0.12s;
}
.nav-links a:hover { color: var(--text); background: var(--bg-secondary); }
.nav-links a.active { color: var(--text); font-weight: 500; }
.nav-links a.dimmed { opacity: 0.35; pointer-events: none; }

/* ─── HERO ─── */
.hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 24px 72px;
  border-bottom: 1px solid var(--border);
}
.hero-eyebrow {
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 22px;
}
.hero h1 {
  font-family: 'Kanit', sans-serif;
  font-weight: 800;
  font-size: clamp(34px, 5.5vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.035em;
  color: var(--text);
  max-width: 620px;
  margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero p {
  font-size: 16.5px;
  color: var(--text-secondary);
  max-width: 460px;
  line-height: 1.65;
  margin-bottom: 36px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--text);
  color: var(--bg);
  font-family: 'DM Sans', sans-serif;
  font-size: 13.5px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
}
.btn-primary:hover { background: #333; transform: translateY(-1px); }
.btn-primary svg { transition: transform 0.15s; }
.btn-primary:hover svg { transform: translateX(3px); }

/* ─── STATS ─── */
.stats-bar {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  gap: 40px;
  border-bottom: 1px solid var(--border);
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-number {
  font-family: 'Kanit', sans-serif;
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
}
.stat-label {
  font-size: 11px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ─── PAGE HEADER ─── */
.page-header {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 44px 24px 36px;
  border-bottom: 1px solid var(--border);
}
.page-header h1 {
  font-family: 'Kanit', sans-serif;
  font-weight: 800;
  font-size: 30px;
  letter-spacing: -0.03em;
  margin-bottom: 5px;
}
.page-header p { font-size: 14.5px; color: var(--text-secondary); }

/* ─── FILTER BAR ─── */
.filter-section {
  position: sticky;
  top: var(--nav-h);
  z-index: 90;
  background: rgba(250, 250, 249, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.filter-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}
.filter-inner::-webkit-scrollbar { display: none; }
.filter-pill {
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border);
  padding: 5px 14px;
  border-radius: 100px;
  transition: color 0.13s, border-color 0.13s, background 0.13s;
  white-space: nowrap;
}
.filter-pill:hover {
  color: var(--text);
  border-color: var(--border-hover);
  background: var(--bg-secondary);
}
.filter-pill.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

/* ─── SESSIONS CONTENT ─── */
.sessions-content {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 36px 24px 80px;
}
.count-label {
  font-size: 12.5px;
  color: var(--text-tertiary);
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

/* ─── DAY GROUP ─── */
.day-group { margin-bottom: 44px; }
.day-heading {
  font-family: 'Kanit', sans-serif;
  font-weight: 700;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

/* ─── SESSION GRID ─── */
.sessions-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
@media (min-width: 680px) {
  .sessions-grid { grid-template-columns: 1fr 1fr; }
}

/* ─── SESSION CARD ─── */
.session-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.session-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}
.card-name {
  font-family: 'Kanit', sans-serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.25;
}
.card-time {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  padding-top: 2px;
  flex-shrink: 0;
}
.card-location {
  font-size: 12.5px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.card-location::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--border-hover);
  flex-shrink: 0;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.tag {
  font-size: 10.5px;
  font-weight: 500;
  padding: 2px 7px;
  border-radius: 100px;
  letter-spacing: 0.015em;
}
.tag-beginner    { color: var(--c-beginner);    background: var(--bg-beginner); }
.tag-intermediate{ color: var(--c-intermediate); background: var(--bg-intermediate); }
.tag-advanced    { color: var(--c-advanced);    background: var(--bg-advanced); }
.tag-allevels    { color: var(--c-allevels);    background: var(--bg-allevels); }
.tag-special     { color: var(--c-special);     background: var(--bg-special); }

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 8px;
  margin-top: auto;
  padding-top: 2px;
}
.reg-badge {
  font-size: 10.5px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 5px;
  letter-spacing: 0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}
.reg-walkin  { color: var(--c-walkin);  background: var(--bg-walkin); }
.reg-contact { color: var(--c-contact); background: var(--bg-contact); }
.reg-sms     { color: var(--c-sms);     background: var(--bg-sms); }
.reg-whatsapp{ color: var(--c-whatsapp);background: var(--bg-whatsapp); }
.reg-wechat  { color: var(--c-wechat);  background: var(--bg-wechat); }

.card-contact {
  font-size: 12px;
  color: var(--text-secondary);
  text-align: right;
  line-height: 1.4;
}
.card-contact a {
  color: var(--text);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.12s;
}
.card-contact a:hover { color: var(--accent); }

.card-notes {
  font-size: 11.5px;
  color: var(--text-tertiary);
  font-style: italic;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  margin-top: 2px;
}

/* ─── FOOTER ─── */
footer {
  max-width: var(--max-w);
  margin: 60px auto 0;
  padding: 32px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-wordmark {
  font-family: 'Kanit', sans-serif;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.03em;
}
.footer-wordmark .dot { color: var(--accent); }
.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 3px;
}
.footer-submit a {
  font-size: 13px;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
  color: var(--text);
  transition: color 0.12s;
}
.footer-submit a:hover { color: var(--accent); }
.footer-legal { font-size: 11px; color: var(--text-tertiary); }

/* ─── RESPONSIVE ─── */
@media (max-width: 480px) {
  .hero { padding: 48px 18px 48px; }
  .stats-bar { padding: 22px 18px; gap: 24px; }
  .sessions-content { padding: 24px 14px 60px; }
  .page-header { padding: 32px 18px 28px; }
  footer { flex-direction: column; align-items: flex-start; gap: 14px; padding: 28px 18px; }
  .footer-right { align-items: flex-start; }
  .nav-links { display: none; }
}