/* Landing page v12 — 3D-forward marketing layout.
   Builds on styles.css tokens (--brand, --brand-2, --panel, --line, etc.) */

/* ---------- Hero ---------- */
.hero3d {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center;
  padding: 56px 0 40px;
}
.hero3d h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); line-height: 1.05; margin: 14px 0 16px; letter-spacing: -0.02em; }
.hero3d .hero-copy p { font-size: 1.06rem; line-height: 1.6; color: var(--muted); max-width: 34em; }
.hero3d .hero-actions { display: flex; gap: 12px; margin: 26px 0 18px; flex-wrap: wrap; }
.trust-row { display: flex; gap: 18px; flex-wrap: wrap; color: var(--muted); font-size: 0.85rem; font-weight: 600; }
.eyebrow { color: var(--brand-2); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.02em; }

.hero-visual { position: relative; }
.demo3d-frame {
  border-radius: 22px; border: 1px solid var(--line); overflow: hidden;
  background: radial-gradient(circle at 50% 35%, rgba(58,123,213,0.18), rgba(8,17,31,0.9));
  box-shadow: 0 30px 80px rgba(0,0,0,0.45);
}
.demo3d-holder {
  position: relative; width: 100%; height: 380px;
  background: radial-gradient(circle at 50% 40%, rgba(124,92,255,0.10), rgba(8,17,31,0.85));
}
.demo3d-holder canvas { display: block; width: 100% !important; height: 100% !important; }
.demo3d-cap { padding: 12px 16px; font-size: 0.85rem; color: var(--muted); border-top: 1px solid var(--line); }

/* ---------- Stat strip ---------- */
.stat-strip {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  padding: 22px; margin: 8px 0 8px; border-radius: 18px;
  border: 1px solid var(--line); background: var(--panel);
}
.stat-strip div { display: flex; flex-direction: column; gap: 3px; text-align: center; }
.stat-strip strong { font-size: 1.25rem; color: var(--brand-2); }
.stat-strip span { font-size: 0.8rem; color: var(--muted); }

/* ---------- Feature blocks ---------- */
.feature-block {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  padding: 64px 0; border-top: 1px solid var(--line);
}
.feature-block.reverse .feature-block-copy { order: 2; }
.feature-block h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); margin: 10px 0 18px; letter-spacing: -0.01em; }
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 30px; line-height: 1.5; color: #d4def0; }
.check-list li::before {
  content: '✓'; position: absolute; left: 0; top: 1px;
  width: 20px; height: 20px; border-radius: 6px; background: rgba(20,217,196,0.16);
  color: #14d9c4; font-weight: 800; font-size: 0.8rem; display: flex; align-items: center; justify-content: center;
}
.check-list.tight li { padding-left: 26px; }
.check-list code { background: rgba(124,92,255,0.18); color: #cbb8ff; padding: 1px 6px; border-radius: 5px; font-size: 0.92em; }

/* Mock visuals */
.mock-board, .mock-live, .mock-notes {
  border-radius: 20px; border: 1px solid var(--line); background: var(--panel);
  padding: 22px; box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}
.mock-graph { position: relative; border-radius: 14px; background: rgba(8,17,31,0.7); padding: 12px; border: 1px solid var(--line); }
.mock-graph svg { width: 100%; height: 150px; }
.mock-eq { position: absolute; top: 14px; right: 16px; color: #14d9c4; font-weight: 700; font-size: 0.95rem; }
.mock-shapes { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.chip { padding: 5px 12px; border-radius: 999px; background: rgba(124,92,255,0.16); color: #cbb8ff; font-size: 0.82rem; font-weight: 600; }

.mock-live { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.mock-reactions { display: flex; gap: 10px; font-size: 1.8rem; }
.mock-pill { padding: 7px 14px; border-radius: 999px; font-weight: 700; font-size: 0.85rem; }
.mock-pill.lost { background: rgba(255,204,102,0.2); color: #ffcc66; }
.mock-pill.q { background: rgba(124,92,255,0.2); color: #cbb8ff; }
.mock-pill.live { background: rgba(20,217,196,0.18); color: #14d9c4; }

.mock-notes h4 { margin: 6px 0 14px; font-size: 1.2rem; }
.mock-quiz-q { font-weight: 600; margin-bottom: 10px; }
.mock-quiz-opts { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.mock-quiz-opts span { padding: 8px 14px; border-radius: 10px; border: 1px solid var(--line); background: rgba(8,17,31,0.6); font-size: 0.9rem; }
.mock-quiz-opts .right { border-color: #14d9c4; color: #14d9c4; background: rgba(20,217,196,0.12); }
.mock-weak { font-size: 0.82rem; color: #ffcc66; background: rgba(255,204,102,0.12); padding: 8px 12px; border-radius: 10px; }

/* ---------- 3D science grid ---------- */
.science3d { padding: 64px 0; border-top: 1px solid var(--line); }
.pricing-heading.center { text-align: center; max-width: 720px; margin: 0 auto 36px; }
.section-sub { color: var(--muted); margin-top: 8px; }
.demo3d-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.demo3d-card {
  border-radius: 20px; border: 1px solid var(--line); background: var(--panel);
  overflow: hidden; padding-bottom: 18px;
}
.demo3d-card .demo3d-holder { height: 260px; border-bottom: 1px solid var(--line); }
.demo3d-card h3 { margin: 16px 18px 8px; font-size: 1.15rem; }
.demo3d-card p { margin: 0 18px; color: var(--muted); font-size: 0.9rem; line-height: 1.5; }

/* ---------- Compare ---------- */
.compare { padding: 64px 0; border-top: 1px solid var(--line); }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; max-width: 860px; margin: 0 auto; }
.compare .panel { padding: 26px; border-radius: 20px; }
.compare .panel.featured { border-color: var(--brand-2); box-shadow: 0 20px 50px rgba(124,92,255,0.18); }
.compare h3 { margin: 0 0 16px; }
.x-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 11px; }
.x-list li { position: relative; padding-left: 28px; color: var(--muted); line-height: 1.5; }
.x-list li::before { content: '✕'; position: absolute; left: 0; top: 1px; color: #ff6b7a; font-weight: 800; }

/* ---------- Final CTA ---------- */
.final-cta { text-align: center; padding: 72px 0; border-top: 1px solid var(--line); }
.final-cta h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); margin-bottom: 10px; }
.final-cta p { color: var(--muted); margin-bottom: 24px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero3d { grid-template-columns: 1fr; gap: 28px; }
  .feature-block, .feature-block.reverse { grid-template-columns: 1fr; gap: 26px; }
  .feature-block.reverse .feature-block-copy { order: 0; }
  .demo3d-grid { grid-template-columns: 1fr; }
  .stat-strip { grid-template-columns: 1fr 1fr; }
  .compare-grid { grid-template-columns: 1fr; }
  .demo3d-holder { height: 320px; }
}

/* ---------- Study essentials strip ---------- */
.essentials { padding: 56px 0; border-top: 1px solid var(--line); }
.essentials-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; max-width: 960px; margin: 0 auto; }
.essential-chip {
  display: flex; flex-direction: column; gap: 5px; padding: 20px;
  border-radius: 16px; border: 1px solid var(--line); background: var(--panel); text-align: center;
}
.essential-chip strong { color: var(--brand-2); font-size: 1.05rem; }
.essential-chip span { color: var(--muted); font-size: 0.85rem; }
@media (max-width: 900px) { .essentials-grid { grid-template-columns: 1fr 1fr; } }

/* =====================================================================
   v25 — grade 5–9 refocus: how-it-works, subjects, lessons, testimonials
   ===================================================================== */

/* ---------- How it works ---------- */
.how { padding: 60px 0 8px; }
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; max-width: 960px; margin: 0 auto; }
.how-step {
  position: relative; padding: 26px 22px 22px; border-radius: 18px;
  border: 1px solid var(--line); background: var(--panel);
}
.how-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 10px; margin-bottom: 12px;
  background: linear-gradient(135deg, var(--brand), #4d8cff); color: #fff; font-weight: 900;
}
.how-step h3 { margin: 4px 0 8px; font-size: 1.12rem; }
.how-step p { margin: 0; color: var(--muted); font-size: 0.92rem; line-height: 1.5; }

/* ---------- Subjects ---------- */
.subjects { padding: 64px 0; border-top: 1px solid var(--line); }
.subjects-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.subject-card {
  display: flex; flex-direction: column; gap: 8px; padding: 24px 20px;
  border-radius: 18px; border: 1px solid var(--line); background: var(--panel);
  text-decoration: none; color: var(--text); transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.subject-card:hover { transform: translateY(-3px); border-color: var(--brand-2); box-shadow: 0 20px 44px rgba(0,0,0,0.32); }
.subject-icon {
  width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; font-weight: 800; background: rgba(124,92,255,0.16); color: #cbb8ff;
}
.subject-card.math .subject-icon { background: rgba(20,217,196,0.16); color: #14d9c4; }
.subject-card.science .subject-icon { background: rgba(124,92,255,0.16); color: #cbb8ff; }
.subject-card.geo .subject-icon { background: rgba(90,200,250,0.16); color: #7fd3ff; }
.subject-card.history .subject-icon { background: rgba(255,204,102,0.16); color: #ffcc66; }
.subject-card h3 { margin: 2px 0 0; font-size: 1.18rem; }
.subject-card p { margin: 0; color: var(--muted); font-size: 0.9rem; line-height: 1.5; flex: 1; }
.subject-standard {
  margin-top: 6px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.02em;
  color: var(--brand-2); text-transform: uppercase;
}

/* ---------- Lessons ---------- */
.lessons { padding: 64px 0; border-top: 1px solid var(--line); }
.lesson-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.lesson-card {
  display: flex; flex-direction: column; gap: 8px; padding: 22px 20px;
  border-radius: 18px; border: 1px solid var(--line); background: var(--panel);
  text-decoration: none; color: var(--text); transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.lesson-card:hover { transform: translateY(-3px); border-color: var(--brand-2); box-shadow: 0 20px 44px rgba(0,0,0,0.32); }
.lesson-tag {
  align-self: flex-start; padding: 3px 10px; border-radius: 999px; font-size: 0.72rem; font-weight: 800;
  text-transform: uppercase; letter-spacing: 0.03em;
}
.lesson-tag.science { background: rgba(124,92,255,0.18); color: #cbb8ff; }
.lesson-tag.math { background: rgba(20,217,196,0.16); color: #14d9c4; }
.lesson-card h3 { margin: 2px 0 0; font-size: 1.08rem; }
.lesson-card p { margin: 0; color: var(--muted); font-size: 0.88rem; line-height: 1.5; flex: 1; }
.lesson-standard { margin-top: 4px; font-size: 0.72rem; font-weight: 700; color: var(--accent); }

/* ---------- Teachers / testimonials ---------- */
.teachers { padding: 64px 0; border-top: 1px solid var(--line); }
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.testimonial {
  margin: 0; padding: 24px 22px; border-radius: 18px;
  border: 1px solid var(--line); background: var(--panel); display: flex; flex-direction: column; gap: 14px;
}
.testimonial blockquote { margin: 0; font-size: 0.98rem; line-height: 1.55; color: #e7eefb; }
.testimonial figcaption { display: flex; flex-direction: column; gap: 2px; }
.t-name { font-weight: 800; }
.t-role { color: var(--muted); font-size: 0.85rem; }
.t-badge {
  margin-top: 4px; align-self: flex-start; font-size: 0.72rem; font-weight: 800;
  color: #14d9c4; background: rgba(20,217,196,0.12); padding: 3px 9px; border-radius: 999px;
}
.t-disclosure { font-size: 0.72rem; color: var(--muted); opacity: 0.85; margin-top: auto; }

/* ---------- Founding 30 ---------- */
.founding30 {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 30px; align-items: center;
  margin-top: 34px; padding: 34px; border-radius: 22px;
  border: 1px solid var(--brand-2);
  background: linear-gradient(135deg, rgba(124,92,255,0.12), rgba(20,217,196,0.08));
}
.founding30-copy h3 { margin: 0 0 10px; font-size: 1.4rem; }
.founding30-copy p { margin: 0 0 18px; color: var(--muted); line-height: 1.6; }
.founding30-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.founding30-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.founding30-list li { position: relative; padding-left: 26px; color: #d4def0; line-height: 1.45; }
.founding30-list li::before {
  content: '★'; position: absolute; left: 0; top: 0; color: var(--accent); font-weight: 900;
}

@media (max-width: 900px) {
  .how-grid { grid-template-columns: 1fr; }
  .subjects-grid { grid-template-columns: 1fr 1fr; }
  .lesson-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .founding30 { grid-template-columns: 1fr; }
}

/* ===================================================================
   v26 — thin Founding-30 top strip + compact hero with graph widget
   =================================================================== */
.founding-strip {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin: 10px 0 0; padding: 8px 16px; border-radius: 12px;
  border: 1px solid rgba(255,204,102,0.4);
  background: linear-gradient(135deg, rgba(255,204,102,0.14), rgba(124,92,255,0.1));
  text-decoration: none; color: var(--text);
  font-size: 0.82rem; transition: border-color .15s ease, transform .1s ease;
}
.founding-strip:hover { border-color: var(--accent); transform: translateY(-1px); }
.fs-badge {
  padding: 3px 10px; border-radius: 999px; background: var(--accent); color: #1b1403;
  font-weight: 800; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.04em; white-space: nowrap;
}
.fs-text { color: #d8e1f0; flex: 1; min-width: 200px; }
.fs-text strong { color: #fff; }
.fs-cta { color: var(--accent); font-weight: 800; white-space: nowrap; }

/* Compact hero: smaller headline, tighter vertical rhythm, so the fold
   surfaces the interactive graph sooner. */
.hero3d.compact { padding: 30px 0 34px; gap: 40px; }
.hero3d.compact h1 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); line-height: 1.08; margin: 10px 0 14px; }
.hero3d.compact .hero-copy p { font-size: 1rem; max-width: 32em; }

/* Hero graph widget holder — a touch shorter than the 3D frame. */
.hero-graph { min-height: 300px; padding: 14px 14px 8px; }
@media (max-width: 900px) { .hero-graph { min-height: 280px; } }