/* ===== base.css ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body, sans-serif);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }

::selection { background: oklch(from var(--color-primary) l c h / 0.25); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

button { cursor: pointer; background: none; border: none; }
table { border-collapse: collapse; width: 100%; }

a, button, [role='button'], [role='link'], input, textarea, select {
  transition: color var(--transition-interactive), background var(--transition-interactive),
    border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0;
}

/* ===== design tokens ===== */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.75rem, 0.8rem + 6vw, 6.5rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  --radius-sm: 0.375rem; --radius-md: 0.5rem; --radius-lg: 0.75rem; --radius-xl: 1rem; --radius-full: 9999px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1180px;
  --content-full: 100%;

  --font-display: 'Fraunces', 'Georgia', serif;
  --font-body: 'General Sans', 'Inter', sans-serif;
}

/* ===== Dallas Tai Chi palette — ink black, rice paper, cinnabar red, brass ===== */
:root, [data-theme='light'] {
  --color-bg: #f6f2ea;
  --color-surface: #fbf8f2;
  --color-surface-2: #ffffff;
  --color-surface-offset: #efe8da;
  --color-surface-offset-2: #e6dcc7;
  --color-surface-dynamic: #ded2b8;
  --color-divider: #ddd3bc;
  --color-border: #cdc0a2;

  --color-text: #201a12;
  --color-text-muted: #6b5f4c;
  --color-text-faint: #a89a7d;
  --color-text-inverse: #f8f3e8;

  --color-primary: #8a2b23;      /* cinnabar red */
  --color-primary-hover: #6e211b;
  --color-primary-active: #521811;
  --color-primary-highlight: #e9d2ce;

  --color-accent: #9c7c33;       /* aged brass/gold */
  --color-accent-hover: #7e6326;
  --color-accent-highlight: #e8dcb8;

  --color-ink: #16130f;

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 60 / 0.08);
  --shadow-md: 0 6px 18px oklch(0.2 0.02 60 / 0.12);
  --shadow-lg: 0 18px 44px oklch(0.15 0.02 60 / 0.22);
}

[data-theme='dark'] {
  --color-bg: #16130f;
  --color-surface: #1c1811;
  --color-surface-2: #221d15;
  --color-surface-offset: #241f16;
  --color-surface-offset-2: #2b2418;
  --color-surface-dynamic: #342c1d;
  --color-divider: #332c1e;
  --color-border: #453a26;

  --color-text: #ece3d0;
  --color-text-muted: #a99a7d;
  --color-text-faint: #6f6248;
  --color-text-inverse: #201a12;

  --color-primary: #d1665a;
  --color-primary-hover: #e08276;
  --color-primary-active: #b04c41;
  --color-primary-highlight: #3a2420;

  --color-accent: #cba94f;
  --color-accent-hover: #ddc06f;
  --color-accent-highlight: #3a301a;

  --color-ink: #ece3d0;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 6px 18px oklch(0 0 0 / 0.35);
  --shadow-lg: 0 18px 44px oklch(0 0 0 / 0.5);
}

/* ===================== LAYOUT ===================== */
.wrap {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-10));
}

section { padding-block: clamp(var(--space-16), 9vw, var(--space-32)); }

/* ===================== HEADER ===================== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.header--hidden { transform: translateY(-100%); }
.header--scrolled { box-shadow: var(--shadow-sm); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
}

.brand { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--color-text); }
.brand-mark { width: 40px; height: 40px; color: var(--color-primary); flex-shrink: 0; }
.brand-name { font-family: var(--font-display); font-size: var(--text-lg); letter-spacing: 0.01em; }
.brand-name em { font-style: normal; color: var(--color-primary); }

.nav { display: flex; align-items: center; gap: var(--space-8); }
.nav-links { display: flex; gap: var(--space-6); list-style: none; }
.nav-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.nav-links a:hover { color: var(--color-primary); }

.header-actions { display: flex; align-items: center; gap: var(--space-4); }

.theme-toggle {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); }
.theme-toggle svg { width: 18px; height: 18px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary { background: var(--color-primary); color: var(--color-text-inverse); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--color-primary-hover); box-shadow: var(--shadow-md); }
.btn-ghost { color: var(--color-text); border: 1px solid var(--color-border); }
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

.menu-toggle { display: none; width: 40px; height: 40px; place-items: center; border-radius: var(--radius-md); }
.menu-toggle svg { width: 22px; height: 22px; }

/* ===================== HERO ===================== */
.hero {
  position: relative;
  padding-top: clamp(var(--space-16), 10vw, var(--space-32));
  padding-bottom: clamp(var(--space-16), 8vw, var(--space-24));
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(circle at 82% 10%, color-mix(in oklab, var(--color-accent) 22%, transparent), transparent 55%),
              radial-gradient(circle at 8% 90%, color-mix(in oklab, var(--color-primary) 18%, transparent), transparent 55%);
}
.hero-grid {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}
.hero-eyebrow::before { content: ''; width: 22px; height: 1px; background: var(--color-primary); }

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin-bottom: var(--space-6);
}
.hero h1 em { font-style: italic; color: var(--color-primary); }

.hero-lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-bottom: var(--space-8);
}

.hero-ctas { display: flex; gap: var(--space-4); flex-wrap: wrap; margin-bottom: var(--space-10); }

.hero-stats { display: flex; gap: var(--space-10); flex-wrap: wrap; }
.hero-stat-num { font-family: var(--font-display); font-size: var(--text-xl); color: var(--color-primary); }
.hero-stat-label { font-size: var(--text-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.08em; }

.hero-visual {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-divider);
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }
.hero-visual::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, color-mix(in oklab, var(--color-ink) 65%, transparent));
}
.hero-visual-caption {
  position: absolute; bottom: var(--space-5); left: var(--space-5); right: var(--space-5);
  color: #f6f2ea; font-size: var(--text-xs); letter-spacing: 0.05em; z-index: 2;
}

/* ===================== SECTION HEADERS ===================== */
.section-head { max-width: 640px; margin-bottom: clamp(var(--space-10), 5vw, var(--space-16)); }
.section-eyebrow {
  font-size: var(--text-xs); letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-primary); margin-bottom: var(--space-4); display: block;
}
.section-head h2 {
  font-family: var(--font-display); font-size: var(--text-2xl); color: var(--color-ink); font-weight: 500;
}
.section-head p { color: var(--color-text-muted); font-size: var(--text-base); margin-top: var(--space-4); }
.section-head.center { margin-inline: auto; text-align: center; }

/* ===================== MATCHING FORM (explainer) ===================== */
.mf-band { background: var(--color-surface-offset); border-block: 1px solid var(--color-divider); }
.mf-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: start;
}
.mf-copy h3 { font-family: var(--font-display); font-size: var(--text-xl); color: var(--color-ink); margin-bottom: var(--space-4); font-weight: 500; }
.mf-copy p { color: var(--color-text-muted); margin-bottom: var(--space-4); }
.mf-copy p:last-child { margin-bottom: 0; }

.path-steps { display: flex; flex-direction: column; gap: 0; }
.path-step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: var(--space-5);
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--color-divider);
  position: relative;
}
.path-step:last-child { border-bottom: none; }
.path-step.is-current .path-num { background: var(--color-primary); color: var(--color-text-inverse); }
.path-num {
  width: 44px; height: 44px; border-radius: var(--radius-full);
  background: var(--color-surface-2); border: 1px solid var(--color-border);
  display: grid; place-items: center;
  font-family: var(--font-display); font-size: var(--text-base); color: var(--color-text-muted);
}
.path-step h4 { font-size: var(--text-base); font-weight: 600; margin-bottom: var(--space-1); color: var(--color-ink); }
.path-step p { font-size: var(--text-sm); color: var(--color-text-muted); margin: 0; }
.path-step .tag {
  display: inline-block; margin-top: var(--space-2);
  font-size: var(--text-xs); color: var(--color-primary);
  background: var(--color-primary-highlight); padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full); letter-spacing: 0.04em;
}

.stat-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
  padding: var(--space-8);
  background: var(--color-ink);
  border-radius: var(--radius-lg);
}
.stat-item { text-align: center; }
.stat-item .num { font-family: var(--font-display); font-size: var(--text-2xl); color: var(--color-accent); display: block; }
.stat-item .label { font-size: var(--text-xs); color: var(--color-text-inverse); text-transform: uppercase; letter-spacing: 0.08em; opacity: 0.75; }

/* ===================== DISCIPLINES / OFFER GRID ===================== */
.disc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.disc-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: border-color var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive);
}
.disc-card:hover { border-color: var(--color-primary); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.disc-icon {
  width: 48px; height: 48px; margin-bottom: var(--space-5);
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: grid; place-items: center;
}
.disc-icon svg { width: 24px; height: 24px; }
.disc-card h3 { font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-ink); margin-bottom: var(--space-2); font-weight: 500; }
.disc-card p { font-size: var(--text-sm); color: var(--color-text-muted); margin: 0; }
.disc-card .featured-tag {
  display: inline-block; font-size: var(--text-xs); color: var(--color-primary);
  margin-bottom: var(--space-3); letter-spacing: 0.05em; text-transform: uppercase;
}

/* ===================== SCHEDULE / PRICING ===================== */
.schedule-band { background: var(--color-ink); color: var(--color-text-inverse); }
.schedule-band .section-eyebrow { color: var(--color-accent); }
.schedule-band .section-head h2 { color: var(--color-text-inverse); }
.schedule-band .section-head p { color: color-mix(in oklab, var(--color-text-inverse) 65%, transparent); }

.schedule-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); }

.class-list { display: flex; flex-direction: column; gap: var(--space-4); }
.class-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-6);
  padding: var(--space-6);
  background: color-mix(in oklab, var(--color-text-inverse) 6%, transparent);
  border: 1px solid color-mix(in oklab, var(--color-text-inverse) 14%, transparent);
  border-radius: var(--radius-lg);
}
.class-day { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 500; }
.class-time { color: color-mix(in oklab, var(--color-text-inverse) 70%, transparent); font-size: var(--text-sm); }
.class-badge {
  font-size: var(--text-xs); letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--color-accent); border: 1px solid var(--color-accent); padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.price-card {
  background: color-mix(in oklab, var(--color-text-inverse) 6%, transparent);
  border: 1px solid color-mix(in oklab, var(--color-accent) 45%, transparent);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  display: flex; flex-direction: column;
}
.price-amount { font-family: var(--font-display); font-size: var(--text-2xl); color: var(--color-accent); margin-bottom: var(--space-1); }
.price-amount span { font-size: var(--text-base); color: color-mix(in oklab, var(--color-text-inverse) 60%, transparent); font-family: var(--font-body); }
.price-note { font-size: var(--text-sm); color: color-mix(in oklab, var(--color-text-inverse) 65%, transparent); margin-bottom: var(--space-6); }
.price-features { display: flex; flex-direction: column; gap: var(--space-3); margin-bottom: var(--space-8); }
.price-features li { display: flex; gap: var(--space-3); align-items: flex-start; font-size: var(--text-sm); }
.price-features svg { width: 18px; height: 18px; color: var(--color-accent); flex-shrink: 0; margin-top: 2px; }

/* ===================== LOCATION ===================== */
.loc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); align-items: center; }
.loc-details { display: flex; flex-direction: column; gap: var(--space-6); }
.loc-item { display: flex; gap: var(--space-4); align-items: flex-start; }
.loc-item .ic { width: 40px; height: 40px; flex-shrink: 0; border-radius: var(--radius-md); background: var(--color-primary-highlight); color: var(--color-primary); display: grid; place-items: center; }
.loc-item .ic svg { width: 20px; height: 20px; }
.loc-item h4 { font-size: var(--text-base); font-weight: 600; color: var(--color-ink); margin-bottom: var(--space-1); }
.loc-item p { font-size: var(--text-sm); color: var(--color-text-muted); margin: 0; }

.map-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-divider);
  box-shadow: var(--shadow-md);
  aspect-ratio: 4/3;
}
.map-frame iframe { width: 100%; height: 100%; border: 0; }

/* ===================== FAQ ===================== */
.faq-list { display: flex; flex-direction: column; gap: var(--space-3); max-width: 760px; }
.faq-item { border: 1px solid var(--color-divider); border-radius: var(--radius-lg); background: var(--color-surface); overflow: hidden; }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  padding: var(--space-6); text-align: left;
  font-size: var(--text-base); font-weight: 600; color: var(--color-ink);
}
.faq-q svg { width: 20px; height: 20px; color: var(--color-text-muted); flex-shrink: 0; transition: transform var(--transition-interactive); }
.faq-item[open] .faq-q svg { transform: rotate(45deg); color: var(--color-primary); }
.faq-a { padding: 0 var(--space-6) var(--space-6); color: var(--color-text-muted); font-size: var(--text-sm); }

/* ===================== WAITLIST CTA ===================== */
.waitlist {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-active));
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 6vw, var(--space-20));
  color: var(--color-text-inverse);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.waitlist::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 20% 20%, color-mix(in oklab, var(--color-accent) 25%, transparent), transparent 60%);
}
.waitlist-inner { position: relative; z-index: 1; max-width: 640px; margin-inline: auto; }
.waitlist h2 { font-family: var(--font-display); font-size: var(--text-2xl); margin-bottom: var(--space-4); font-weight: 500; }
.waitlist p { color: color-mix(in oklab, var(--color-text-inverse) 85%, transparent); margin-bottom: var(--space-8); }
.waitlist .btn-primary { background: var(--color-text-inverse); color: var(--color-primary); }
.waitlist .btn-primary:hover { background: color-mix(in oklab, var(--color-text-inverse) 90%, var(--color-primary)); }
.waitlist-email { font-size: var(--text-sm); margin-top: var(--space-6); color: color-mix(in oklab, var(--color-text-inverse) 80%, transparent); }
.waitlist-email a { color: var(--color-text-inverse); font-weight: 600; text-decoration: underline; }

/* ===================== FOOTER ===================== */
.footer { border-top: 1px solid var(--color-divider); padding-block: var(--space-16); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--space-12); margin-bottom: var(--space-12); }
.footer-brand { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-4); }
.footer-brand svg { width: 32px; height: 32px; color: var(--color-primary); }
.footer-brand span { font-family: var(--font-display); font-size: var(--text-lg); }
.footer p.desc { font-size: var(--text-sm); color: var(--color-text-muted); max-width: 36ch; }
.footer h5 { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-faint); margin-bottom: var(--space-4); }
.footer-links { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-links a { font-size: var(--text-sm); color: var(--color-text-muted); text-decoration: none; }
.footer-links a:hover { color: var(--color-primary); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: var(--space-8); border-top: 1px solid var(--color-divider); font-size: var(--text-xs); color: var(--color-text-faint); flex-wrap: wrap; gap: var(--space-3); }

/* ===================== RESPONSIVE ===================== */
@media (max-width: 980px) {
  .nav-links, .header-actions .btn-ghost { display: none; }
  .menu-toggle { display: grid; }
  .hero-grid, .mf-grid, .schedule-grid, .loc-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 420px; margin-inline: auto; }
  .disc-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-strip { grid-template-columns: 1fr; gap: var(--space-4); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
}
@media (max-width: 620px) {
  .disc-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: var(--space-6); }
  .hero-ctas { flex-direction: column; align-items: stretch; }
  .class-row { flex-direction: column; align-items: flex-start; gap: var(--space-2); }
}