:root {
  --logic-bg: #081117;
  --logic-bg-soft: #12202b;
  --logic-panel: rgba(10, 21, 31, 0.88);
  --logic-panel-strong: rgba(14, 28, 40, 0.94);
  --logic-panel-alt: rgba(19, 38, 54, 0.92);
  --logic-line: rgba(143, 188, 217, 0.18);
  --logic-line-strong: rgba(213, 175, 84, 0.28);
  --logic-text: #eff6fb;
  --logic-muted: #aac0d1;
  --logic-accent: #f0c36b;
  --logic-accent-soft: #f8dd9e;
  --logic-mint: #8fd1c7;
  --logic-danger: #ff9173;
  --logic-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --logic-radius: 24px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: 'IBM Plex Sans', sans-serif;
  color: var(--logic-text);
  background:
    radial-gradient(circle at top left, rgba(240, 195, 107, 0.16), transparent 26%),
    radial-gradient(circle at 82% 16%, rgba(143, 209, 199, 0.14), transparent 28%),
    linear-gradient(180deg, #04090d 0%, #09131a 42%, #0b171f 100%);
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

.logic-skip {
  position: absolute;
  left: 16px;
  top: 12px;
  transform: translateY(-180%);
  padding: 10px 14px;
  border-radius: 999px;
  background: #ffffff;
  color: #081117;
  text-decoration: none;
  z-index: 20;
}

.logic-skip:focus {
  transform: translateY(0);
}

.logic-nav {
  width: min(1260px, calc(100% - 32px));
  margin: 18px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.logic-nav a {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.logic-nav a:hover,
.logic-nav a:focus-visible,
.logic-button:hover,
.logic-button:focus-visible,
.discipline-card:hover,
.discipline-card:focus-visible,
.drill-card:hover,
.drill-card:focus-visible,
.session-card:hover,
.session-card:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(240, 195, 107, 0.28);
}

.logic-shell {
  width: min(1260px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 44px;
}

.logic-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.95fr);
  gap: 20px;
  padding: 28px;
  border-radius: 32px;
  background: linear-gradient(145deg, rgba(10, 20, 30, 0.96), rgba(18, 34, 46, 0.98));
  border: 1px solid var(--logic-line);
  box-shadow: var(--logic-shadow);
  overflow: hidden;
  position: relative;
}

.logic-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -100px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 195, 107, 0.22), transparent 68%);
  pointer-events: none;
}

.logic-hero__copy,
.logic-principles {
  position: relative;
  z-index: 1;
}

.logic-hero__eyebrow,
.logic-principles__eyebrow,
.logic-panel__eyebrow,
.logic-metric-card__eyebrow,
.logic-summary-card__eyebrow {
  margin: 0 0 14px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: var(--logic-accent-soft);
}

.logic-hero__title,
.logic-principles h2,
.logic-panel h3,
.output-card h3,
.support-card h3,
.logic-metric-card h2,
.logic-section-title {
  font-family: 'Sora', sans-serif;
}

.logic-hero__title {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  line-height: 0.98;
  max-width: 10ch;
}

.logic-hero__lead {
  max-width: 60ch;
  margin: 18px 0 0;
  color: var(--logic-muted);
  line-height: 1.72;
  font-size: 1.02rem;
}

.logic-hero__actions,
.logic-action-row,
.logic-status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.logic-hero__actions {
  margin-top: 24px;
}

.logic-status-row {
  margin-top: 20px;
}

.logic-button {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--logic-text);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.logic-button--primary {
  background: linear-gradient(135deg, var(--logic-accent), #f8dc93);
  color: #0b1218;
  font-weight: 700;
}

.logic-button--secondary {
  border-color: var(--logic-line);
  background: rgba(255, 255, 255, 0.04);
}

.logic-button--ghost {
  border-color: rgba(255, 255, 255, 0.1);
}

.logic-status-badge {
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(143, 209, 199, 0.1);
  border: 1px solid rgba(143, 209, 199, 0.18);
  color: #d9f2ed;
  font-size: 0.9rem;
}

.logic-status-badge--neutral {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
  color: var(--logic-muted);
}

.logic-status-badge--warn {
  background: rgba(255, 145, 115, 0.08);
  border-color: rgba(255, 145, 115, 0.18);
  color: #ffd4c9;
}

.logic-principles {
  padding: 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(18px);
}

.logic-principles h2 {
  margin: 0;
  font-size: 1.5rem;
  line-height: 1.2;
}

.logic-principles__list {
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--logic-muted);
  line-height: 1.7;
}

.logic-principles__note {
  margin: 20px 0 0;
  color: var(--logic-muted);
  line-height: 1.6;
}

.logic-principles code {
  font-family: 'IBM Plex Sans', sans-serif;
  color: var(--logic-accent-soft);
}

.logic-metrics {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.logic-metric-card {
  padding: 18px;
  border-radius: 22px;
  background: var(--logic-panel);
  border: 1px solid var(--logic-line);
  box-shadow: var(--logic-shadow);
}

.logic-metric-card--link {
  display: block;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.logic-metric-card--link:hover,
.logic-metric-card--link:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(240, 195, 107, 0.42);
}

.logic-metric-card--accent {
  border-color: var(--logic-line-strong);
  background: linear-gradient(165deg, rgba(32, 27, 18, 0.95), rgba(18, 28, 34, 0.96));
}

.logic-metric-card h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.logic-metric-card__detail {
  margin: 10px 0 0;
  color: var(--logic-muted);
  line-height: 1.6;
}

.logic-metric-card__hint {
  margin-top: 12px;
  color: var(--logic-accent-soft);
  font-weight: 600;
}

.logic-layout {
  margin-top: 22px;
  display: grid;
  grid-template-columns: minmax(240px, 0.86fr) minmax(0, 1.3fr) minmax(260px, 0.92fr);
  gap: 18px;
  align-items: start;
}

.logic-section-title {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.logic-panel,
.support-card {
  border-radius: 24px;
  background: var(--logic-panel-strong);
  border: 1px solid var(--logic-line);
  box-shadow: var(--logic-shadow);
}

.logic-panel {
  padding: 22px;
}

.logic-panel__header,
.output-card__header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 12px;
  margin-bottom: 18px;
}

.discipline-grid,
.drill-list,
.session-list {
  display: grid;
  gap: 12px;
}

.discipline-card,
.drill-card,
.session-card {
  width: 100%;
  text-align: left;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--logic-panel-alt);
  color: var(--logic-text);
  padding: 16px;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.discipline-card.is-active,
.drill-card.is-active,
.session-card.is-active {
  border-color: rgba(240, 195, 107, 0.42);
  background: linear-gradient(180deg, rgba(53, 43, 23, 0.96), rgba(20, 33, 41, 0.98));
}

.discipline-card__title,
.drill-card__title,
.session-card__title {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
}

.discipline-card__meta,
.drill-card__meta,
.session-card__meta,
.session-card__timestamp {
  display: block;
  color: var(--logic-muted);
  line-height: 1.55;
}

.logic-summary-card {
  margin-top: 16px;
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.logic-summary-card h3 {
  margin: 0;
  font-size: 1.3rem;
}

.logic-summary-card__body {
  margin: 12px 0 0;
  color: var(--logic-muted);
  line-height: 1.65;
}

.checklist-list {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--logic-text);
  line-height: 1.7;
}

.reasoning-form {
  display: grid;
  gap: 14px;
}

.logic-field {
  display: grid;
  gap: 8px;
}

.logic-field__label {
  font-weight: 600;
}

.logic-field input,
.logic-field select,
.logic-field textarea,
.logic-output {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  background: rgba(5, 10, 14, 0.72);
  color: var(--logic-text);
  padding: 14px 15px;
  resize: vertical;
}

.logic-field input::placeholder,
.logic-field textarea::placeholder {
  color: rgba(170, 192, 209, 0.72);
}

.logic-field-grid,
.output-grid {
  display: grid;
  gap: 14px;
}

.logic-field-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.output-grid {
  margin-top: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.output-card {
  padding: 20px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.logic-output {
  min-height: 360px;
  line-height: 1.55;
}

.logic-output--prompt {
  background: rgba(9, 15, 20, 0.86);
}

.support-card {
  padding: 20px;
}

#drills-title:focus-visible {
  outline: 2px solid var(--logic-accent);
  outline-offset: 6px;
}

.session-card__timestamp {
  margin-top: 8px;
  font-size: 0.88rem;
}

.support-card + .support-card {
  margin-top: 16px;
}

.logic-empty {
  margin: 0;
  color: var(--logic-muted);
  line-height: 1.6;
}

@media (max-width: 1120px) {
  .logic-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .logic-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .logic-hero {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .logic-shell,
  .logic-nav {
    width: min(100% - 20px, 1260px);
  }

  .logic-field-grid,
  .output-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  .logic-nav,
  .logic-hero__actions,
  .logic-status-row,
  .logic-action-row {
    gap: 10px;
  }

  .logic-button,
  .logic-nav a {
    width: 100%;
    justify-content: center;
  }

  .logic-metrics {
    grid-template-columns: 1fr;
  }
}