/* ============================================================
   Theorem Learning Tutoring — shared site styles
   Used by: index, programs, diagnostic, about, enroll, contact
   ============================================================ */

/* ---------- design tokens ---------- */
:root {
  --bg: #fffaf0;
  --bg-cream: #fef9e7;
  --bg-pink: #fef2f2;
  --bg-blue: #eff6ff;
  --bg-yellow: #fefce8;
  --bg-mint: #ecfdf5;
  --bg-purple: #f5f3ff;
  --surface: #ffffff;

  --ink: #1f2937;
  --ink-soft: #4b5563;
  --ink-faded: #6b7280;

  --coral: #fb6f4d;
  --coral-deep: #e84a26;
  --coral-shadow: #c43815;

  --blue: #3b82f6;
  --blue-deep: #2563eb;
  --blue-shadow: #1d4ed8;

  --yellow: #fbbf24;
  --yellow-deep: #f59e0b;

  --mint: #34d399;
  --mint-deep: #10b981;

  --purple: #a78bfa;
  --purple-deep: #8b5cf6;

  --pink: #f472b6;

  --border: #f3e8d8;
  --border-soft: #faf0e0;

  --serif: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --sans: 'Inter', -apple-system, system-ui, sans-serif;
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { max-width: 100%; height: auto; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
@media (min-width: 768px) { .wrap { padding: 0 32px; } }
.wrap-narrow { max-width: 800px; margin: 0 auto; padding: 0 20px; }

/* ---------- headings ---------- */
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0;
}
h1 { font-size: 44px; }
h2 { font-size: 36px; }
h3 { font-size: 22px; }
h4 { font-size: 18px; }
@media (min-width: 768px) {
  h1 { font-size: 56px; }
  h2 { font-size: 44px; }
}

.squiggle-wrap { display: inline-block; position: relative; }
.squiggle-wrap svg.squiggle {
  position: absolute; bottom: -10px; left: 0; width: 100%; height: 14px;
  color: var(--coral);
}

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 250, 240, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 70px; gap: 16px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--serif); font-size: 22px; font-weight: 800;
  color: var(--ink);
}
.logo .star { width: 28px; height: 28px; flex-shrink: 0; color: var(--yellow-deep); }
.nav-links { display: none; gap: 28px; align-items: center; }
@media (min-width: 980px) { .nav-links { display: flex; } }
.nav-links a {
  font-size: 15px; font-weight: 600; color: var(--ink-soft);
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--coral); }
.nav-cta {
  background: var(--coral); color: white;
  padding: 11px 20px; border-radius: 999px;
  font-size: 14px; font-weight: 700;
  box-shadow: 0 3px 0 var(--coral-shadow);
  transition: transform 0.08s, box-shadow 0.08s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 0 var(--coral-shadow); }
.nav-cta:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--coral-shadow); }
.nav-toggle { display: inline-flex; background: none; border: 0; padding: 8px; color: var(--ink); }
@media (min-width: 980px) { .nav-toggle { display: none; } }
.nav-toggle svg { width: 24px; height: 24px; }
.nav-mobile {
  display: none; flex-direction: column;
  padding: 12px 20px 20px; border-top: 1px solid var(--border);
  background: white;
}
.nav-mobile a { padding: 12px 0; font-size: 16px; font-weight: 600; color: var(--ink); }
.nav-mobile.open { display: flex; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 26px; border-radius: 999px;
  font-size: 16px; font-weight: 700;
  border: 0; transition: transform 0.08s, box-shadow 0.08s;
  text-align: center;
  cursor: pointer;
}
.btn-coral { background: var(--coral); color: white; box-shadow: 0 4px 0 var(--coral-shadow); }
.btn-coral:hover { transform: translateY(-2px); box-shadow: 0 6px 0 var(--coral-shadow); }
.btn-coral:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--coral-shadow); }
.btn-blue { background: var(--blue); color: white; box-shadow: 0 4px 0 var(--blue-shadow); }
.btn-blue:hover { transform: translateY(-2px); box-shadow: 0 6px 0 var(--blue-shadow); }
.btn-blue:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--blue-shadow); }
.btn-outline {
  background: white; color: var(--ink);
  border: 2px solid var(--ink); box-shadow: 0 4px 0 var(--ink);
}
.btn-outline:hover { transform: translateY(-2px); box-shadow: 0 6px 0 var(--ink); }
.btn-outline:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--ink); }
.btn-ghost {
  background: transparent; color: var(--ink-soft);
  font-weight: 600; box-shadow: none; padding: 10px 18px;
}
.btn-ghost:hover { color: var(--ink); }
.btn svg { width: 18px; height: 18px; }

/* ---------- hero patterns ---------- */
.hero { padding: 60px 0 80px; position: relative; overflow: hidden; }
@media (min-width: 768px) { .hero { padding: 100px 0 110px; } }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--bg-yellow); color: var(--yellow-deep);
  padding: 7px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 700;
  margin-bottom: 24px;
  border: 2px solid var(--yellow);
}
.hero-eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--mint-deep);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.7; }
}

/* sticker decoration */
.sticker {
  background: white;
  border-radius: 16px;
  padding: 14px 18px;
  box-shadow: 0 4px 0 rgba(0,0,0,0.08), 0 8px 24px rgba(0,0,0,0.06);
  border: 2px solid var(--border);
  font-weight: 700;
  display: inline-flex; align-items: center; gap: 6px;
}
.sticker.yel { background: var(--bg-yellow); border-color: var(--yellow); }
.sticker.blu { background: var(--bg-blue); border-color: var(--blue); color: var(--blue-deep); }
.sticker.mnt { background: var(--bg-mint); border-color: var(--mint); color: var(--mint-deep); }
.sticker.crl { background: var(--bg-pink); border-color: var(--coral); color: var(--coral-deep); }
.sticker.prp { background: var(--bg-purple); border-color: var(--purple); color: var(--purple-deep); }
.sticker-emoji { font-size: 22px; }

.sticker-cluster {
  position: relative;
  min-height: 380px;
  width: 100%;
}
.sticker-cluster .sticker { position: absolute; transition: transform 0.2s ease; }
.sticker-cluster .sticker:hover { transform: rotate(0deg) scale(1.05) !important; }
.sticker-cluster .s1 { top: 0; left: 10%; transform: rotate(-6deg); font-size: 18px; }
.sticker-cluster .s2 { top: 25%; right: 0; transform: rotate(5deg); }
.sticker-cluster .s3 { top: 50%; left: 0; transform: rotate(-3deg); }
.sticker-cluster .s4 { bottom: 12%; right: 12%; transform: rotate(7deg); }
.sticker-cluster .s5 { bottom: 0; left: 18%; transform: rotate(-9deg); font-size: 14px; }
@media (max-width: 980px) { .sticker-cluster { display: none; } }

/* ---------- sections ---------- */
.section { padding: 80px 0; }
@media (min-width: 768px) { .section { padding: 100px 0; } }
.section-alt { background: var(--bg-cream); }
.section-coral { background: var(--coral); color: white; }
.section-coral h1, .section-coral h2, .section-coral h3 { color: white; }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head.left { text-align: left; margin-left: 0; }
.section-kicker {
  font-size: 13px; font-weight: 800; color: var(--coral);
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-bottom: 14px;
}
.section-coral .section-kicker { color: rgba(255,255,255,0.9); }
.sec-lede {
  font-size: 18px; color: var(--ink-soft); max-width: 580px;
  margin: 14px auto 0;
}
.section-coral .sec-lede { color: rgba(255,255,255,0.95); }
.section-head.left .sec-lede { margin-left: 0; margin-right: 0; }

/* ---------- generic cards ---------- */
.card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 4px 0 var(--border);
}
.card.yel { background: var(--bg-yellow); border-color: var(--yellow); box-shadow: 0 4px 0 var(--yellow); }
.card.blu { background: var(--bg-blue); border-color: var(--blue); box-shadow: 0 4px 0 var(--blue); }
.card.crl { background: var(--bg-pink); border-color: var(--coral); box-shadow: 0 4px 0 var(--coral); }
.card.prp { background: var(--bg-purple); border-color: var(--purple); box-shadow: 0 4px 0 var(--purple); }
.card.mnt { background: var(--bg-mint); border-color: var(--mint); box-shadow: 0 4px 0 var(--mint); }

/* ---------- trust strip ---------- */
.trust {
  background: var(--bg-cream);
  border-top: 2px solid var(--border);
  border-bottom: 2px solid var(--border);
  padding: 28px 0;
}
.trust-line {
  text-align: center;
  font-size: 14px; color: var(--ink-soft); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-bottom: 18px;
}
.trust-grid {
  display: grid; gap: 18px;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .trust-grid { grid-template-columns: 1fr 1fr 1fr; } }
.trust-item {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  font-weight: 700; font-size: 16px;
}
.trust-item .icon { font-size: 24px; }

/* ---------- forms ---------- */
.form-card {
  background: white;
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 4px 0 var(--border);
}
.form-row { display: flex; flex-direction: column; gap: 18px; margin-bottom: 18px; }
.form-row.two {
  display: grid; gap: 14px;
  grid-template-columns: 1fr;
}
@media (min-width: 600px) { .form-row.two { grid-template-columns: 1fr 1fr; } }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label, .field .label {
  font-size: 14px; font-weight: 700; color: var(--ink);
}
.field .hint { font-size: 12px; color: var(--ink-faded); margin-top: -2px; }
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="number"],
.field select,
.field textarea {
  background: var(--bg-cream);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 11px 14px;
  font: inherit; font-size: 15px;
  color: var(--ink);
  transition: border-color 0.15s, background 0.15s;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none; border-color: var(--blue);
  background: white;
}
.field textarea { min-height: 110px; resize: vertical; }
.field .radio-group, .field .checkbox-group { display: flex; flex-direction: column; gap: 8px; }
.field .radio-option, .field .checkbox-option {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 14px;
  background: var(--bg-cream);
  border: 2px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  font-size: 15px;
}
.field .radio-option:hover, .field .checkbox-option:hover { border-color: var(--blue); }
.field .radio-option input, .field .checkbox-option input { margin-top: 3px; flex-shrink: 0; }
.field .radio-option.checked, .field .checkbox-option.checked {
  background: var(--bg-blue); border-color: var(--blue);
}

.form-success {
  background: var(--bg-mint);
  border: 2px solid var(--mint);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  display: none;
}
.form-success.show { display: block; }
.form-success h3 {
  color: var(--mint-deep); font-size: 22px; margin-bottom: 8px;
}
.form-success p { margin: 0; color: var(--ink-soft); }
.form-success .check {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--mint); color: white; font-size: 32px;
  margin-bottom: 16px;
}

/* ---------- quiz (diagnostic page) ---------- */
.quiz-card {
  background: white;
  border: 2px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 4px 0 var(--border);
  margin-bottom: 16px;
}
.quiz-meta {
  display: flex; gap: 8px; align-items: center;
  margin-bottom: 14px;
  font-size: 12px; font-weight: 700;
  color: var(--ink-faded);
}
.quiz-meta .num {
  background: var(--ink); color: white;
  padding: 3px 9px; border-radius: 999px;
  font-size: 12px;
}
.quiz-meta .topic {
  background: var(--bg-yellow); color: var(--yellow-deep);
  padding: 3px 9px; border-radius: 999px;
  text-transform: uppercase; letter-spacing: 0.06em;
}
.quiz-q {
  font-size: 17px; line-height: 1.5; color: var(--ink);
  margin-bottom: 16px;
}
.quiz-opts {
  display: grid; gap: 8px;
  grid-template-columns: 1fr;
}
@media (min-width: 600px) { .quiz-opts { grid-template-columns: 1fr 1fr; } }
.quiz-opt {
  position: relative;
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  background: var(--bg-cream);
  border: 2px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  font-size: 15px; font-weight: 600;
  transition: all 0.15s;
}
.quiz-opt:hover {
  background: var(--bg-blue); border-color: var(--blue);
  transform: translateY(-1px);
}
.quiz-opt.selected {
  background: var(--bg-blue); border-color: var(--blue); color: var(--blue-deep);
}
.quiz-opt .letter {
  width: 30px; height: 30px; border-radius: 50%;
  background: white; border: 2px solid var(--ink);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800;
  flex-shrink: 0;
}
.quiz-opt.selected .letter {
  background: var(--blue); color: white; border-color: var(--blue);
}
/* visually hidden but focusable, so the quiz works by keyboard and screen reader */
.quiz-opt input {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0);
  overflow: hidden;
  white-space: nowrap;
}
.quiz-opt input:focus-visible + .letter {
  outline: 3px solid var(--blue-deep);
  outline-offset: 2px;
}

/* ---------- pricing ---------- */
.price-grid {
  display: grid; gap: 18px;
  grid-template-columns: 1fr;
}
@media (min-width: 760px) { .price-grid { grid-template-columns: 1fr 1fr 1fr; } }
.price {
  background: white;
  border: 2px solid var(--border);
  border-radius: 24px;
  padding: 30px 26px;
  box-shadow: 0 4px 0 var(--border);
  display: flex; flex-direction: column;
  position: relative;
}
.price.featured {
  border-color: var(--coral);
  box-shadow: 0 6px 0 var(--coral);
}
.price .pop-tag {
  position: absolute; top: -14px; left: 26px;
  background: var(--coral); color: white;
  padding: 5px 13px; border-radius: 999px;
  font-size: 12px; font-weight: 800;
  letter-spacing: 0.06em; text-transform: uppercase;
  transform: rotate(-2deg);
  box-shadow: 0 2px 0 var(--coral-shadow);
}
.price .plan-name {
  font-family: var(--sans); font-size: 14px; font-weight: 700; color: var(--ink-faded);
  text-transform: uppercase; letter-spacing: 0.08em;
  margin: 0 0 8px;
}
.price .amt {
  font-family: var(--serif); font-size: 42px; font-weight: 800;
  margin: 0; line-height: 1; letter-spacing: -0.02em;
}
.price .amt span { font-size: 16px; font-weight: 600; color: var(--ink-soft); letter-spacing: 0; }
.price .blurb { font-size: 14px; color: var(--ink-soft); margin: 6px 0 18px; }
.price ul {
  list-style: none; padding: 0; margin: 0 0 24px;
  display: flex; flex-direction: column; gap: 9px;
  font-size: 14px;
}
.price li { display: flex; gap: 8px; align-items: flex-start; color: var(--ink); }
.price li::before { content: '✓'; color: var(--mint-deep); font-weight: 900; }
.price .price-cta {
  margin-top: auto; text-align: center;
  padding: 12px; border-radius: 999px;
  background: var(--bg-cream); color: var(--ink); font-weight: 700; font-size: 14px;
  border: 2px solid var(--border);
  transition: all 0.15s;
}
.price.featured .price-cta {
  background: var(--coral); color: white; border-color: var(--coral);
  box-shadow: 0 3px 0 var(--coral-shadow);
}
.price.featured .price-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 0 var(--coral-shadow); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: white; border: 2px solid var(--border);
  border-radius: 16px; margin-bottom: 12px;
  box-shadow: 0 3px 0 var(--border);
  overflow: hidden;
}
.faq-q {
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer;
  padding: 18px 22px;
  font-size: 17px; font-weight: 700;
  color: var(--ink); gap: 14px;
}
.faq-q svg { width: 22px; height: 22px; transition: transform 0.2s; flex-shrink: 0; color: var(--coral); }
.faq-item.open .faq-q svg { transform: rotate(180deg); }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--ink-soft); font-size: 15px; line-height: 1.6;
  padding: 0 22px;
}
.faq-item.open .faq-a { max-height: 400px; padding: 0 22px 20px; }

/* ---------- testimonials ---------- */
.tests-grid {
  display: grid; gap: 18px;
  grid-template-columns: 1fr;
}
@media (min-width: 760px) { .tests-grid { grid-template-columns: 1fr 1fr 1fr; } }
.test-card {
  background: white;
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 4px 0 var(--border);
  position: relative;
}
.test-stick {
  position: absolute; top: -14px; right: 18px;
  background: var(--mint); color: white;
  padding: 4px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 800;
  transform: rotate(4deg);
  box-shadow: 0 2px 0 var(--mint-deep);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.test-card:nth-child(2) .test-stick { background: var(--yellow); box-shadow: 0 2px 0 var(--yellow-deep); transform: rotate(-3deg); }
.test-card:nth-child(3) .test-stick { background: var(--coral); box-shadow: 0 2px 0 var(--coral-deep); }
.test-card blockquote {
  margin: 0 0 16px;
  font-size: 16px; line-height: 1.55;
  color: var(--ink); font-style: italic;
}
.test-card .who { font-size: 13px; color: var(--ink-faded); font-weight: 600; }

/* ---------- footer ---------- */
footer {
  background: var(--ink);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 28px;
}
.foot-grid {
  display: grid; gap: 36px;
  grid-template-columns: 1fr;
  margin-bottom: 40px;
}
@media (min-width: 700px) { .foot-grid { grid-template-columns: 1.5fr 1fr 1fr 1.3fr; } }
.foot-col h4 {
  color: white; font-family: var(--sans);
  font-size: 13px; font-weight: 800; letter-spacing: 0.08em;
  text-transform: uppercase; margin: 0 0 14px;
}
.foot-col a {
  display: block; padding: 5px 0; font-size: 14px;
  color: rgba(255,255,255,0.65); transition: color 0.15s;
}
.foot-col a:hover { color: var(--yellow); }
.foot-logo {
  color: white; font-family: var(--serif); font-size: 22px; font-weight: 800;
  margin-bottom: 10px;
  display: flex; align-items: center; gap: 8px;
}
.foot-logo .star { width: 24px; height: 24px; color: var(--yellow-deep); }
.foot-desc { font-size: 14px; line-height: 1.6; max-width: 280px; margin-bottom: 18px; }
.foot-newsletter {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px; padding: 16px;
}
.foot-newsletter p { margin: 0 0 10px; font-size: 13px; color: rgba(255,255,255,0.85); font-weight: 600; }
.foot-newsletter form { display: flex; gap: 8px; }
.foot-newsletter input {
  flex: 1; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.18);
  color: white; padding: 9px 12px; border-radius: 999px;
  font: inherit; font-size: 13px;
}
.foot-newsletter input::placeholder { color: rgba(255,255,255,0.4); }
.foot-newsletter button {
  background: var(--coral); color: white; border: 0;
  padding: 9px 16px; border-radius: 999px; font-weight: 700; font-size: 13px;
  box-shadow: 0 2px 0 var(--coral-shadow);
  cursor: pointer;
}
.foot-bottom {
  padding-top: 22px; border-top: 1px solid rgba(255,255,255,0.1);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 13px; color: rgba(255,255,255,0.5);
}
.foot-socials { display: flex; gap: 14px; }
.foot-socials a { padding: 0; }

/* ---------- utility ---------- */
.center { text-align: center; }
.mt-2 { margin-top: 16px; }
.mt-4 { margin-top: 32px; }
.mt-6 { margin-top: 48px; }
.mb-2 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 32px; }
.hidden { display: none !important; }