:root {
  color-scheme: dark;
  --bg: #060b16;
  --bg-card: rgba(10, 20, 39, 0.78);
  --bg-card-soft: rgba(25, 38, 64, 0.45);
  --text: #e8f0ff;
  --muted: #9ab1d4;
  --brand: #5ea8ff;
  --brand-strong: #2f83ff;
  --line: rgba(133, 166, 216, 0.22);
  --ok: #6df0bb;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(circle at top, #0c1a33 0%, var(--bg) 50%);
  color: var(--text);
  min-height: 100vh;
  position: relative;
}

.bg-glow {
  position: fixed;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.2;
  pointer-events: none;
  z-index: 0;
}

.bg-glow-a {
  background: #2084ff;
  top: -220px;
  right: -140px;
}

.bg-glow-b {
  background: #52d2ff;
  bottom: -280px;
  left: -100px;
}

.hero,
.layout {
  position: relative;
  z-index: 1;
}

.hero {
  padding: 56px 24px 20px;
}

.hero__content {
  max-width: 1120px;
  margin: 0 auto;
}

.eyebrow {
  margin: 0;
  color: var(--ok);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
}

h1 {
  margin: 10px 0 12px;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.05;
}

.hero__lead {
  margin: 0;
  color: var(--muted);
  max-width: 68ch;
  line-height: 1.6;
}

.hero__stats {
  margin-top: 28px;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.stat {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  box-shadow: var(--shadow);
}

.stat span {
  display: block;
  font-weight: 800;
  font-size: 1.8rem;
}

.stat p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.small-text {
  margin: 0 0 10px;
  font-size: 0.86rem;
  color: var(--muted);
}

.layout {
  max-width: 1120px;
  margin: 0 auto;
  padding: 12px 24px 36px;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 20px;
}

.sidebar {
  display: grid;
  gap: 12px;
  align-self: start;
  position: sticky;
  top: 14px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow);
}

.card h2,
.card h3 {
  margin: 0 0 12px;
}

.card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.5;
}

.card--muted {
  background: var(--bg-card-soft);
}

.tabs {
  display: flex;
  gap: 8px;
}

.tab {
  flex: 1;
  border: 1px solid var(--line);
  background: rgba(18, 31, 52, 0.8);
  color: var(--text);
  border-radius: 10px;
  padding: 10px;
  font-weight: 600;
  cursor: pointer;
}

.tab.is-active {
  background: linear-gradient(180deg, #4e9eff, #1a6fff);
  border-color: transparent;
}

.field {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 8px;
  color: var(--muted);
}

.input {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(6, 12, 24, 0.65);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 11px;
  outline: none;
}

.input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(94, 168, 255, 0.2);
}

.chips {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  border: 1px solid var(--line);
  background: rgba(8, 18, 33, 0.82);
  color: var(--text);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 0.82rem;
  cursor: pointer;
}

.chip.is-active {
  background: rgba(94, 168, 255, 0.22);
  border-color: rgba(94, 168, 255, 0.8);
}

.view {
  display: none;
}

.view.is-active {
  display: block;
}

.grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.technique-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  box-shadow: var(--shadow);
}

.technique-card__head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: start;
}

.technique-card h3 {
  margin: 0;
  font-size: 1rem;
}

.pill {
  margin: 0;
  border: 1px solid rgba(109, 240, 187, 0.4);
  color: var(--ok);
  background: rgba(109, 240, 187, 0.12);
  border-radius: 999px;
  font-size: 0.75rem;
  padding: 5px 9px;
  white-space: nowrap;
}

.technique-card__meta {
  margin: 8px 0 12px;
  color: var(--muted);
  font-size: 0.85rem;
}

.technique-card__checklist {
  display: grid;
  gap: 7px;
  margin-bottom: 10px;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--muted);
}

.task-item input {
  accent-color: var(--brand);
}

.technique-details {
  margin-bottom: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(5, 10, 20, 0.42);
  padding: 10px;
}

.technique-details summary {
  cursor: pointer;
  font-size: 0.85rem;
  color: #c6dcff;
  font-weight: 600;
}

.detail-columns {
  margin-top: 10px;
  display: grid;
  gap: 10px;
}

.detail-columns section {
  border-top: 1px dashed rgba(133, 166, 216, 0.18);
  padding-top: 8px;
}

.detail-columns h4 {
  margin: 0 0 6px;
  font-size: 0.82rem;
  color: #b9d3fc;
}

.detail-list,
.detail-text {
  margin: 0;
  padding-left: 18px;
  color: #d8e7ff;
  font-size: 0.82rem;
  line-height: 1.5;
}

.detail-text {
  padding-left: 0;
}

.video-wrap {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #02050c;
  aspect-ratio: 16 / 9;
}

iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.video-fallback {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.is-hidden {
  display: none;
}

.handbook-pages {
  display: grid;
  gap: 12px;
}

.page-card {
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  padding: 16px;
}

.page-card h3 {
  margin: 0 0 10px;
}

.page-card p {
  margin: 0;
  white-space: pre-wrap;
  color: #d5e4ff;
  line-height: 1.5;
}

.empty-state {
  border: 1px dashed var(--line);
  border-radius: 14px;
  padding: 20px;
  color: var(--muted);
  text-align: center;
}

.progress-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.progress-bar {
  width: 100%;
  height: 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.progress-bar span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #5ea8ff, #6df0bb);
}

.reset-btn {
  border: 1px solid var(--line);
  background: rgba(18, 31, 52, 0.8);
  color: var(--text);
  border-radius: 8px;
  font-size: 0.75rem;
  padding: 6px 9px;
  cursor: pointer;
}

.plan-btn {
  margin-top: 12px;
  width: 100%;
  padding: 10px 12px;
  font-size: 0.82rem;
  font-weight: 600;
}

.plan-output {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(10, 20, 39, 0.82);
  padding: 14px;
  margin-bottom: 14px;
}

.plan-output h3 {
  margin: 0 0 10px;
}

.plan-meta {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.84rem;
}

.plan-timeline {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 6px;
  color: #d5e4ff;
  font-size: 0.84rem;
}

.plan-techniques {
  margin: 12px 0 0;
  display: grid;
  gap: 8px;
}

.plan-technique {
  border: 1px solid rgba(133, 166, 216, 0.2);
  border-radius: 12px;
  background: rgba(6, 12, 24, 0.55);
  padding: 10px;
}

.plan-technique strong {
  display: block;
  font-size: 0.86rem;
}

.plan-technique p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.plan-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.plan-pinned {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(109, 240, 187, 0.4);
  background: rgba(109, 240, 187, 0.12);
  color: var(--ok);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }
}

@media print {
  body {
    background: #fff;
    color: #111;
  }

  .hero,
  .sidebar,
  #program-grid,
  #handbook-view,
  .bg-glow,
  #print-plan,
  #pin-plan,
  #unpin-plan {
    display: none !important;
  }

  .layout,
  .content,
  #program-view {
    max-width: 100%;
    width: 100%;
    margin: 0;
    padding: 0;
    display: block;
  }

  .plan-output {
    display: block !important;
    background: #fff;
    border: 1px solid #ddd;
    box-shadow: none;
    margin: 0;
    color: #111;
  }

  .plan-meta,
  .plan-timeline,
  .plan-technique p {
    color: #222;
  }
}