/* =============================================================================
   Landing V3 — Three-snap: Hero → Rich Cards → Impact/Support.
   Layered on top of landing.css (inherits all base styles + demo component CSS).
   ============================================================================= */

/* Snap behavior: hero and impact snap, cards section scrolls freely */
html:has(.mls-landing-v3) {
  scroll-snap-type: y mandatory !important;
  scroll-behavior: smooth;
}

.mls-landing-v3 .mls-section-hero {
  scroll-snap-align: start;
}

.mls-landing-v3 .mls-section-richcards {
  scroll-snap-align: start;
}

.mls-landing-v3 .mls-section-impact {
  scroll-snap-align: start;
}

/* ─── Snap 1: Hero (identical to V2) ─── */

.mls-landing-v3 .mls-section-hero {
  min-height: calc(100vh - 60px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.mls-landing-v3 .mls-section-hero .mls-landing-grid {
  flex: 1;
  align-items: center;
  margin-top: -3rem;
}

.mls-landing-v3 .mls-hero-intro {
  max-width: 440px;
}

.mls-hero-badge {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--mls-text-muted);
  letter-spacing: 0.04em;
  margin: 0;
  opacity: 0.8;
}

/* Scroll indicator — clickable */
.mls-landing-v3 .mls-scroll-indicator {
  pointer-events: auto;
  cursor: pointer;
  animation: none !important;
  transform: translateX(-50%);
}

.mls-landing-v3 .mls-scroll-indicator:hover {
  opacity: 1;
}

.mls-landing-v3 .mls-scroll-indicator:hover span {
  color: var(--mls-accent);
}

.mls-landing-v3 .mls-scroll-arrow {
  animation: bounce-arrow 2s infinite;
}

@keyframes bounce-arrow {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

/* ─── Snap 2: Rich card grid section ─── */

.mls-section-richcards {
  min-height: calc(100vh - 60px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 1.5rem 2rem 3.5rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.mls-section-richcards > :first-child {
  margin-top: -1.5rem;
}

.mls-section-richcards .mls-cards-header {
  text-align: center;
  margin-bottom: 1.25rem;
}

.mls-cards-title {
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  font-weight: 700;
  color: var(--mls-text);
  margin: 0;
  letter-spacing: -0.02em;
  border: none !important;
  border-bottom: none !important;
  padding: 0;
}

/* 4×2 rich card grid */
.mls-rich-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
  width: 100%;
  max-width: 1100px;
}

/* ─── Row labels ─── */
.mls-row-label {
  grid-column: 1 / -1;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mls-text);
  margin: 0.6rem 0 -0.15rem;
  padding: 0;
  opacity: 0.45;
}

/* ─── Card color accents (WCAG AA compliant) ─── */
:root {
  --card-explore: #2563EB;
  --card-build: #D4740C;
  --card-deploy: #148F77;
  --card-model: #0284C7;
  --card-practice: #475569;
  --card-adopt: #6366f1;
  --card-teach: #A51C30;
  --card-follow: #475569;
}

[data-bs-theme="dark"] {
  --card-explore: #60a5fa;
  --card-build: #f59e0b;
  --card-deploy: #34d399;
  --card-model: #38bdf8;
  --card-practice: #94a3b8;
  --card-adopt: #a5b4fc;
  --card-teach: #f87171;
  --card-follow: #94a3b8;
}

/* ─── Rich card — vertical: demo thumbnail on top, text below ─── */
.mls-rich-card {
  display: flex;
  flex-direction: column;
  border-radius: 16px;
  background: var(--mls-glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--mls-glass-border);
  box-shadow: var(--mls-card-shadow);
  text-decoration: none;
  color: var(--mls-text);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

/* Top accent bar — disabled, demos fill edge-to-edge */

/* Per-card accent colors via data attribute */
.mls-rich-card[data-accent="explore"] { --card-accent: var(--card-explore); }
.mls-rich-card[data-accent="build"]   { --card-accent: var(--card-build); }
.mls-rich-card[data-accent="deploy"]  { --card-accent: var(--card-deploy); }
.mls-rich-card[data-accent="model"]   { --card-accent: var(--card-model); }
.mls-rich-card[data-accent="practice"]{ --card-accent: var(--card-practice); }
.mls-rich-card[data-accent="adopt"]   { --card-accent: var(--card-adopt); }
.mls-rich-card[data-accent="teach"]   { --card-accent: var(--card-teach); }
.mls-rich-card[data-accent="follow"]  { --card-accent: var(--card-follow); }

/* Hover — lift + shadow, no border change */
.mls-rich-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--mls-card-shadow-hover);
}

.mls-rich-card:hover .mls-cur-name {
  color: var(--card-accent, var(--mls-accent));
}

/* Active press feedback */
.mls-rich-card:active {
  transform: translateY(-1px);
  transition-duration: 0.05s;
}

/* Focus visible for keyboard nav */
.mls-rich-card:focus-visible {
  outline: 2px solid var(--card-accent, var(--mls-accent));
  outline-offset: 2px;
  transform: translateY(-4px);
}

/* ─── Card info (below demo via order) ─── */
.mls-rich-card-info {
  display: flex;
  flex-direction: column;
  padding: 0.75rem 1rem 0.85rem;
  flex-shrink: 0;
  order: 2;
}

.mls-rich-card-info .mls-cur-verb {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--card-accent, var(--mls-accent));
  margin: 0 0 0.2rem;
}

.mls-rich-card-info .mls-cur-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--mls-text);
  margin: 0 0 0.25rem;
  transition: color 0.2s ease;
}

.mls-rich-card-info .mls-cur-desc {
  font-size: 0.75rem;
  color: var(--mls-text-muted);
  margin: 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ─── Card demo (top visual via order) ─── */
.mls-rich-card-demo {
  width: 100%;
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0;
  border-bottom: 1px solid var(--mls-glass-border);
  order: 1;
}

.mls-rich-card-demo > svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Hardware kits image */
.mls-rich-card-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 0;
  background: #d5f0eb;
  padding: 10px;
}

/* ─── Accessibility: visually hidden ─── */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ─── Snap 2: Scroll indicator ─── */

.mls-scroll-2 {
  position: relative;
  margin-top: 3rem;
  text-align: center;
  width: 100%;
  color: var(--mls-text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  pointer-events: auto;
  cursor: pointer;
  animation: none !important;
}

.mls-scroll-2 .mls-scroll-arrow {
  font-size: 1.5rem;
  margin-top: 0.25rem;
  color: var(--mls-accent);
  animation: bounce-arrow 2s infinite;
}

.mls-scroll-2:hover span {
  color: var(--mls-accent);
}

/* ─── Snap 3: Impact & Mission (identical to V2) ─── */

.mls-section-impact {
  min-height: calc(100vh - 60px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2rem 2rem 1.5rem;
  max-width: 950px;
  margin: 0 auto;
  gap: 1.5rem;
  text-align: center;
}

.mls-impact-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  max-width: 650px;
  background: var(--mls-glass-bg);
  border: 1px solid var(--mls-glass-border);
  box-shadow: var(--mls-card-shadow);
  padding: 1.5rem 2.5rem;
  border-radius: 16px;
}

.mls-impact-eyebrow {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--mls-accent);
  margin: 0;
}

.mls-impact-headline {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  color: var(--mls-text);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 0.25rem;
  border: none !important;
  border-bottom: none !important;
  padding: 0;
}

.mls-impact-mission {
  font-size: 0.92rem;
  color: var(--mls-text-muted);
  margin: 0;
  line-height: 1.6;
}

.mls-impact-mission strong {
  color: var(--mls-accent);
  font-weight: 700;
}

.mls-reader-map {
  width: 100%;
  max-width: 820px;
}

.mls-looker-wrap {
  position: relative;
  width: 100%;
  padding-bottom: 48%;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--mls-glass-border);
  box-shadow: var(--mls-card-shadow);
  background: var(--mls-glass-bg);
}

.mls-looker-wrap iframe {
  position: absolute;
  top: -25%;
  left: -25%;
  width: 150%;
  height: 150%;
  border: 0;
  pointer-events: none;
}

.mls-looker-wrap:hover iframe {
  pointer-events: auto;
}

.mls-map-caption {
  font-size: 0.75rem;
  color: var(--mls-text);
  text-align: center;
  margin: 0.5rem 0 0;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.mls-impact-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  background: var(--mls-glass-bg);
  border: 1px solid var(--mls-glass-border);
  box-shadow: var(--mls-card-shadow);
  padding: 1.25rem 2.5rem;
  border-radius: 16px;
}

.mls-impact-stats-line {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--mls-text-muted);
  margin: 0;
  letter-spacing: 0.02em;
}

.mls-goal-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
}

.mls-impact-goal {
  font-size: 0.95rem;
  color: var(--mls-text);
  margin: 0;
  font-weight: 600;
}

.mls-impact-goal strong {
  color: var(--mls-accent);
}

.mls-impact-goal-sub {
  font-size: 0.82rem;
  color: var(--mls-text-muted);
  margin: 0;
  max-width: 500px;
  line-height: 1.5;
}

.mls-star-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.mls-impact-sponsors {
  font-size: 0.75rem;
  color: var(--mls-text-muted);
  margin: 0;
  opacity: 0.7;
}

.mls-impact-sponsors a {
  color: var(--mls-accent);
  font-weight: 600;
  text-decoration: none;
}

.mls-impact-sponsors a:hover {
  opacity: 0.8;
}

/* Button styles */
.mls-footer-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.3rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  border: 1px solid var(--mls-card-border);
}

.mls-footer-btn svg {
  flex-shrink: 0;
}

.mls-btn-star {
  background: rgba(0, 0, 0, 0.06);
  color: var(--mls-text);
  border-color: rgba(0, 0, 0, 0.15);
  padding: 0.7rem 1.8rem;
  font-size: 1rem;
}

.mls-btn-star:hover {
  background: rgba(0, 0, 0, 0.1);
  border-color: rgba(0, 0, 0, 0.25);
  color: var(--mls-text);
}

[data-bs-theme="dark"] .mls-btn-star {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
}

[data-bs-theme="dark"] .mls-btn-star:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
}

/* ═══ Responsive: Tablet (≤900px) ═══ */

@media (max-width: 900px) {
  .mls-rich-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem;
  }

  .mls-rich-card-demo {
    height: 120px;
  }

  .mls-section-richcards {
    padding: 2rem 1.5rem 4rem;
  }

  .mls-impact-headline {
    font-size: 1.8rem;
  }
}

/* ═══ Responsive: Phone (≤768px) ═══ */

@media (max-width: 768px) {
  /* Cards become single column, info on top, demo below */
  .mls-rich-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .mls-rich-card {
    flex-direction: column;
    min-height: auto;
  }

  .mls-rich-card-info {
    width: 100%;
    padding: 1.25rem 1.25rem 0.5rem;
  }

  .mls-rich-card-demo {
    width: 100%;
    padding: 0.5rem 1rem 1rem;
    justify-content: center;
  }

  .mls-rich-card-demo {
    height: 110px;
  }

  /* Disable snap on all sections for phone — free scroll */
  .mls-landing-v3 .mls-section-hero,
  .mls-section-richcards,
  .mls-section-impact {
    min-height: auto;
    scroll-snap-align: none;
  }

  .mls-cards-title {
    font-size: 1.2rem;
  }

  .mls-hero-badge {
    font-size: 0.7rem;
  }

  .mls-impact-headline {
    font-size: 1.4rem;
  }

  .mls-impact-goal {
    font-size: 0.8rem;
  }

  .mls-impact-stats-line {
    font-size: 0.78rem;
  }

  .mls-footer-btn {
    padding: 0.45rem 0.9rem;
    font-size: 0.8rem;
  }

  .mls-section-impact {
    padding: 1.5rem 1rem 1rem;
    gap: 0.6rem;
  }

  .mls-scroll-2 {
    display: none;
  }
}

/* ═══ Responsive: Small phone (≤480px) ═══ */

@media (max-width: 480px) {
  .mls-rich-card-demo {
    height: 100px;
  }

  .mls-rich-card-info .mls-cur-desc {
    font-size: 0.75rem;
  }

  .mls-rich-card-info .mls-cur-name {
    font-size: 0.95rem;
  }
}