/* ==========================================================================
   TEAS STUDY ZONE — Design System
   Signature motif: the "pulse line" (vitals monitor trace)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;1,9..144,500&family=Inter:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root{
  /* ---- Color tokens ---- */
  --paper:        #FAF7F1;
  --paper-dim:    #F2EDE2;
  --pine:         #14453D;
  --pine-deep:    #0D302A;
  --pine-tint:    #1D5A50;
  --rose:         #E85D75;
  --rose-deep:    #C8425A;
  --gold:         #F2B705;
  --ink:          #1A2421;
  --ink-soft:     #4A5550;
  --line:         #DCD5C3;
  --white:        #FFFFFF;

  /* dark mode swap targets */
  --bg:           var(--paper);
  --bg-alt:       var(--paper-dim);
  --text:         var(--ink);
  --text-soft:    var(--ink-soft);
  --surface:      var(--white);
  --border:       var(--line);

  /* ---- Type ---- */
  --font-display: 'Fraunces', serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  /* ---- Layout ---- */
  --maxw: 1180px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 28px;
  --shadow-soft: 0 8px 30px rgba(20, 69, 61, 0.08);
  --shadow-lift: 0 16px 44px rgba(20, 69, 61, 0.16);
  --ease: cubic-bezier(.22,.9,.32,1);
}

[data-theme="dark"]{
  --bg:        #0D1B18;
  --bg-alt:    #10231F;
  --text:      #F3F1EA;
  --text-soft: #B7C4C0;
  --surface:   #133029;
  --border:    #234840;
  --paper:     #0D1B18;
  --paper-dim: #10231F;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; overflow-x:hidden; }
body{ overflow-x:hidden; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
}

body{
  margin:0;
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  transition:background .3s var(--ease), color .3s var(--ease);
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; cursor:pointer; }
input,textarea,select{ font-family:inherit; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 24px; }
section{ padding:96px 0; }
@media (max-width:768px){ section{ padding:64px 0; } }

h1,h2,h3,h4{ font-family:var(--font-display); color:var(--text); line-height:1.12; margin:0; letter-spacing:-0.01em; }
h1{ font-size:clamp(2.6rem, 5.5vw, 4.6rem); font-weight:600; }
h2{ font-size:clamp(1.9rem, 3.6vw, 2.75rem); font-weight:600; }
h3{ font-size:1.3rem; font-weight:600; }
p{ margin:0; color:var(--text-soft); }

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-mono); font-size:.72rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--rose-deep); font-weight:600; margin-bottom:14px;
}
[data-theme="dark"] .eyebrow{ color:#F3899C; }

.lede{ font-size:1.15rem; max-width:640px; }

/* ---- Buttons ---- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:15px 30px; border-radius:100px; font-weight:600; font-size:.98rem;
  border:1.5px solid transparent; transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease);
  white-space:nowrap;
}
.btn-primary{ background:var(--rose); color:#fff; box-shadow:0 10px 24px rgba(232,93,117,.32); }
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 16px 32px rgba(232,93,117,.4); background:var(--rose-deep); }
.btn-outline{ background:transparent; border-color:var(--pine); color:var(--pine); }
[data-theme="dark"] .btn-outline{ border-color:var(--border); color:var(--text); }
.btn-outline:hover{ background:var(--pine); color:#fff; transform:translateY(-2px); }
[data-theme="dark"] .btn-outline:hover{ background:var(--surface); color:var(--text); }
.btn-dark{ background:var(--pine); color:#fff; }
.btn-dark:hover{ background:var(--pine-deep); transform:translateY(-2px); }
.btn-sm{ padding:10px 20px; font-size:.85rem; }
.btn[disabled]{ opacity:.55; cursor:not-allowed; transform:none !important; }

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.nav{
  position:sticky; top:0; z-index:100;
  background:rgba(250,247,241,.82); backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s, box-shadow .3s, background .3s;
}
[data-theme="dark"] .nav{ background:rgba(13,27,24,.82); }
.nav.scrolled{ border-bottom-color:var(--border); box-shadow:0 4px 24px rgba(20,69,61,.06); }
.nav-inner{ display:flex; align-items:center; justify-content:space-between; padding:16px 24px; max-width:var(--maxw); margin:0 auto; }
.logo{ display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-weight:700; font-size:1.28rem; color:var(--pine); }
[data-theme="dark"] .logo{ color:var(--text); }
.logo .pulse-dot{ color:var(--rose); }
.nav-menu{ display:flex; gap:30px; }
.nav-menu a{ font-size:.94rem; font-weight:500; color:var(--text-soft); position:relative; padding:4px 0; transition:color .2s; }
.nav-menu a:hover, .nav-menu a.active{ color:var(--pine); }
[data-theme="dark"] .nav-menu a:hover, [data-theme="dark"] .nav-menu a.active{ color:#fff; }
.nav-menu a.active::after{ content:""; position:absolute; left:0; bottom:-6px; width:100%; height:2px; background:var(--rose); border-radius:2px; }
.nav-right{ display:flex; align-items:center; gap:14px; }
.theme-toggle{
  width:40px; height:40px; border-radius:50%; border:1px solid var(--border); background:var(--surface);
  display:flex; align-items:center; justify-content:center; font-size:1rem; transition:background .2s,transform .2s;
}
.theme-toggle:hover{ transform:scale(1.08); }
.nav-burger{ display:none; width:40px; height:40px; border:1px solid var(--border); border-radius:10px; background:var(--surface); align-items:center; justify-content:center; }
@media (max-width:640px){ .nav-cta-desktop{ display:none; } }
@media (max-width:880px){
  .nav-menu{ position:fixed; top:73px; left:0; right:0; background:var(--bg); flex-direction:column; gap:0; padding:8px 24px 20px; border-bottom:1px solid var(--border); transform:translateY(-8px); opacity:0; pointer-events:none; transition:all .25s var(--ease); }
  .nav-menu.open{ transform:translateY(0); opacity:1; pointer-events:auto; }
  .nav-menu a{ padding:14px 0; border-bottom:1px solid var(--border); }
  .nav-burger{ display:flex; }
}

/* ==========================================================================
   PULSE LINE — signature motif
   ========================================================================== */
.pulse-line-svg path{
  fill:none; stroke:var(--rose); stroke-width:2.5; stroke-linecap:round; stroke-linejoin:round;
}
.pulse-draw path{
  stroke-dasharray:1400; stroke-dashoffset:1400;
  animation:draw-pulse 2.2s var(--ease) forwards;
}
@keyframes draw-pulse{ to{ stroke-dashoffset:0; } }

.divider-pulse{ width:100%; overflow:hidden; opacity:.55; margin:0 0 -1px; }
.divider-pulse svg{ width:100%; height:auto; display:block; }
.divider-pulse path{ stroke:var(--border); stroke-width:1.5; fill:none; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{ position:relative; padding:64px 0 40px; overflow:hidden; }
.hero-inner{ position:relative; z-index:2; max-width:760px; margin:0 auto; text-align:center; }
.hero h1{ margin-bottom:22px; }
.hero h1 em{ font-style:italic; color:var(--rose); }
.hero .lede{ margin:0 auto 34px; font-size:1.2rem; }
.hero-cta{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; margin-bottom:56px; }
.hero-pulse-wrap{ position:relative; max-width:900px; margin:0 auto; height:120px; opacity:.9; }
.hero-blob{
  position:absolute; border-radius:50%; filter:blur(60px); z-index:0; opacity:.35;
}
.hero-blob.b1{ width:420px; height:420px; background:var(--gold); top:-160px; left:-120px; }
.hero-blob.b2{ width:380px; height:380px; background:var(--rose); top:-100px; right:-140px; }
.hero-blob.b3{ width:320px; height:320px; background:var(--pine-tint); bottom:-220px; left:38%; }

/* ==========================================================================
   STATS
   ========================================================================== */
.stats{ background:var(--pine); color:#fff; padding:56px 0; }
.stats-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center; }
.stat-num{ font-family:var(--font-mono); font-size:clamp(1.8rem,3.4vw,2.6rem); font-weight:600; color:var(--gold); }
.stat-label{ color:#CFE1DC; font-size:.9rem; margin-top:6px; letter-spacing:.02em; }
@media (max-width:768px){ .stats-grid{ grid-template-columns:repeat(2,1fr); gap:32px 20px; } }

/* ==========================================================================
   FEATURE CARDS
   ========================================================================== */
.section-head{ max-width:640px; margin:0 auto 56px; text-align:center; }
.grid-4{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
@media (max-width:980px){ .grid-4{ grid-template-columns:repeat(2,1fr); } .grid-3{ grid-template-columns:1fr; } }
@media (max-width:560px){ .grid-4{ grid-template-columns:1fr; } }

.card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-md);
  padding:30px 26px; transition:transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.card:hover{ transform:translateY(-6px); box-shadow:var(--shadow-lift); border-color:transparent; }
.card-icon{ font-size:1.7rem; width:52px; height:52px; border-radius:14px; background:var(--bg-alt); display:flex; align-items:center; justify-content:center; margin-bottom:18px; }
.card h3{ margin-bottom:8px; }
.card p{ font-size:.95rem; }

/* ==========================================================================
   PRICING
   ========================================================================== */
.pricing-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; align-items:stretch; }
@media (max-width:980px){ .pricing-grid{ grid-template-columns:1fr; max-width:440px; margin:0 auto; } }
.price-card{
  background:var(--surface); border:1.5px solid var(--border); border-radius:var(--radius-lg);
  padding:38px 30px; display:flex; flex-direction:column; position:relative; transition:transform .3s var(--ease), box-shadow .3s var(--ease);
}
.price-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow-lift); }
.price-card.popular{ border-color:var(--rose); box-shadow:var(--shadow-lift); transform:scale(1.03); }
@media (max-width:980px){ .price-card.popular{ transform:none; } }
.price-badge{
  position:absolute; top:-14px; left:50%; transform:translateX(-50%);
  background:var(--rose); color:#fff; font-size:.75rem; font-weight:700; letter-spacing:.04em;
  padding:6px 18px; border-radius:100px; text-transform:uppercase;
}
.price-name{ font-family:var(--font-mono); font-size:.8rem; letter-spacing:.1em; text-transform:uppercase; color:var(--text-soft); margin-bottom:10px; }
.price-amount{ font-family:var(--font-display); font-size:2.8rem; font-weight:600; margin-bottom:6px; }
.price-amount span{ font-size:1rem; font-family:var(--font-body); color:var(--text-soft); font-weight:500; }
.price-sub{ font-size:.85rem; color:var(--text-soft); margin-bottom:26px; }
.price-list{ display:flex; flex-direction:column; gap:12px; margin-bottom:30px; flex:1; }
.price-list li{ display:flex; gap:10px; font-size:.92rem; align-items:flex-start; }
.price-list li::before{ content:"✓"; color:var(--rose); font-weight:700; flex-shrink:0; }
.price-fine{ text-align:center; color:var(--text-soft); font-size:.88rem; margin-top:40px; }

/* ==========================================================================
   REVIEWS / CAROUSEL
   ========================================================================== */
.review-track{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
@media (max-width:980px){ .review-track{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:640px){ .review-track{ grid-template-columns:1fr; } }
.review-card{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-md); padding:26px; }
.review-stars{ color:var(--gold); letter-spacing:2px; margin-bottom:12px; }
.review-quote{ font-size:.96rem; color:var(--text); margin-bottom:18px; }
.review-who{ display:flex; align-items:center; gap:12px; }
.review-avatar{ width:40px; height:40px; border-radius:50%; background:var(--bg-alt); display:flex; align-items:center; justify-content:center; font-family:var(--font-display); font-weight:600; color:var(--pine); }
.review-name{ font-weight:600; font-size:.9rem; }
.review-role{ font-size:.8rem; color:var(--text-soft); }

/* ==========================================================================
   COMMUNITY BAND
   ========================================================================== */
.community{ background:var(--bg-alt); }
.community-box{ text-align:center; max-width:640px; margin:0 auto; }

/* ==========================================================================
   FAQ ACCORDION
   ========================================================================== */
.faq-list{ max-width:760px; margin:0 auto; display:flex; flex-direction:column; gap:14px; }
.faq-item{ border:1px solid var(--border); border-radius:var(--radius-sm); background:var(--surface); overflow:hidden; }
.faq-q{ width:100%; text-align:left; background:none; border:none; padding:20px 24px; display:flex; justify-content:space-between; align-items:center; font-weight:600; font-size:1rem; color:var(--text); }
.faq-icon{ transition:transform .3s var(--ease); color:var(--rose); font-size:1.2rem; flex-shrink:0; margin-left:16px; }
.faq-item.open .faq-icon{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .35s var(--ease); }
.faq-a-inner{ padding:0 24px 20px; color:var(--text-soft); font-size:.94rem; }

/* ==========================================================================
   FINAL CTA
   ========================================================================== */
.cta-final{ background:var(--pine); color:#fff; text-align:center; border-radius:var(--radius-lg); margin:0 24px; padding:80px 40px; position:relative; overflow:hidden; }
.cta-final h2{ color:#fff; margin-bottom:16px; }
.cta-final p{ color:#CFE1DC; max-width:520px; margin:0 auto 32px; }
.cta-final-wrap{ max-width:calc(var(--maxw) - 48px); margin:0 auto; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{ background:var(--pine-deep); color:#CFE1DC; padding:64px 0 28px; margin-top:80px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr repeat(3,1fr); gap:40px; margin-bottom:40px; }
@media (max-width:768px){ .footer-grid{ grid-template-columns:repeat(2,1fr); } }
.footer-brand{ font-family:var(--font-display); font-size:1.3rem; color:#fff; font-weight:700; margin-bottom:12px; }
.footer-col h4{ font-family:var(--font-body); color:#fff; font-size:.85rem; letter-spacing:.06em; text-transform:uppercase; margin-bottom:16px; }
.footer-col ul{ display:flex; flex-direction:column; gap:10px; }
.footer-col a{ font-size:.92rem; color:#B9D2CC; transition:color .2s; }
.footer-col a:hover{ color:#fff; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.12); padding-top:24px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:.82rem; color:#89A8A1; }

/* ==========================================================================
   BACK TO TOP
   ========================================================================== */
.back-top{
  position:fixed; bottom:28px; right:28px; width:48px; height:48px; border-radius:50%;
  background:var(--pine); color:#fff; border:none; display:flex; align-items:center; justify-content:center;
  font-size:1.2rem; box-shadow:var(--shadow-lift); opacity:0; pointer-events:none; transform:translateY(10px);
  transition:all .3s var(--ease); z-index:90;
}
.back-top.show{ opacity:1; pointer-events:auto; transform:translateY(0); }
.back-top:hover{ background:var(--rose); }

/* ==========================================================================
   SCROLL REVEAL
   ========================================================================== */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in{ opacity:1; transform:none; }
.reveal-stagger.in .stagger-child{ opacity:1; transform:none; }
.stagger-child{ opacity:0; transform:translateY(20px); transition:opacity .6s var(--ease), transform .6s var(--ease); }

/* ==========================================================================
   PAGE HERO (inner pages)
   ========================================================================== */
.page-hero{ text-align:center; padding:72px 0 48px; }
.page-hero .lede{ margin:0 auto; }

/* ==========================================================================
   GENERIC UTILITIES
   ========================================================================== */
.text-center{ text-align:center; }
.mt-lg{ margin-top:56px; }
.badge{ display:inline-block; padding:4px 12px; border-radius:100px; font-size:.72rem; font-weight:700; letter-spacing:.04em; text-transform:uppercase; background:var(--bg-alt); color:var(--pine); }
[data-theme="dark"] .badge{ color:var(--gold); }

/* ---- Forms ---- */
.field{ display:flex; flex-direction:column; gap:8px; margin-bottom:20px; }
.field label{ font-size:.85rem; font-weight:600; color:var(--text); }
.field input, .field textarea, .field select{
  padding:13px 16px; border:1.5px solid var(--border); border-radius:var(--radius-sm);
  background:var(--surface); color:var(--text); font-size:.95rem; transition:border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus, .field select:focus{
  outline:none; border-color:var(--rose); box-shadow:0 0 0 4px rgba(232,93,117,.14);
}
.field.error input, .field.error textarea{ border-color:#D64545; }
.field-error{ font-size:.8rem; color:#D64545; display:none; }
.field.error .field-error{ display:block; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
@media (max-width:640px){ .field-row{ grid-template-columns:1fr; } }

:focus-visible{ outline:2.5px solid var(--rose); outline-offset:2px; }

/* ---- Responsive split layouts (checkout, contact) ---- */
.split-layout{ display:grid; grid-template-columns:1.6fr 1fr; gap:36px; align-items:start; }
@media (max-width:900px){ .split-layout{ grid-template-columns:1fr; gap:24px; } }

/* ---- Responsive sidebar layout (policies page) ---- */
.sidebar-layout{ display:grid; grid-template-columns:220px 1fr; gap:48px; align-items:start; }
@media (max-width:820px){
  .sidebar-layout{ grid-template-columns:1fr; gap:20px; }
  .sidebar-layout nav{ position:static !important; flex-direction:row !important; flex-wrap:wrap; gap:8px !important; }
}

/* ---- Demo quiz combined results stat grid ---- */
.demo-results-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
@media (max-width:420px){ .demo-results-grid{ grid-template-columns:1fr; gap:14px; } }

/* Toast */
.toast{
  position:fixed; bottom:28px; left:50%; transform:translateX(-50%) translateY(20px);
  background:var(--pine); color:#fff; padding:14px 26px; border-radius:100px; font-size:.92rem; font-weight:500;
  box-shadow:var(--shadow-lift); opacity:0; pointer-events:none; transition:all .3s var(--ease); z-index:200;
  white-space:nowrap; max-width:min(90vw, 420px); text-align:center;
}
@media (max-width:480px){
  .toast{ white-space:normal; border-radius:20px; }
}
.toast.show{ opacity:1; transform:translateX(-50%) translateY(0); }
.toast.error{ background:#B93A3A; }