/* Jazz Interactive visual polish layer
   Shared across the standalone lesson pages. */

:root {
  --ji-ink: #181713;
  --ji-ink-soft: #3d382f;
  --ji-muted: #6c6457;
  --ji-paper: #f4efe3;
  --ji-paper-warm: #ece2d0;
  --ji-paper-cool: #e7eadf;
  --ji-line: #cdbf9f;
  --ji-brass: #b97824;
  --ji-brass-deep: #7d4a17;
  --ji-rouge: #8d2736;
  --ji-green: #2f6f5f;
  --ji-blue: #264e73;
  --ji-shadow: 0 20px 60px rgba(40, 31, 18, 0.12);
  --ji-shadow-sm: 0 10px 28px rgba(40, 31, 18, 0.08);
  --ji-radius: 7px;
  --ji-sans: "Aptos", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --ji-mono: "DM Mono", "SFMono-Regular", Consolas, monospace;
  --ji-display: "Playfair Display", Georgia, serif;

  --ink: var(--ji-ink);
  --ink-2: var(--ji-ink-soft);
  --ink-3: var(--ji-muted);
  --paper: var(--ji-paper);
  --paper-2: var(--ji-paper-warm);
  --paper-3: var(--ji-line);
  --gold: var(--ji-brass);
  --blue: var(--ji-blue);
  --red: var(--ji-rouge);
  --green: var(--ji-green);
  --active: var(--ji-brass);
  --played: var(--ji-blue);
  --radius: var(--ji-radius);
  --focus-outline: 3px solid var(--ji-green);
}

html {
  color-scheme: light;
}

body {
  font-family: var(--ji-sans);
  font-kerning: normal;
  background: var(--ji-paper);
  color: var(--ji-ink);
  line-height: 1.55;
}

/* Engraved music-staff field.
   Each "staff" is five hairlines spaced 7px apart; staves repeat every 96px,
   leaving a generous gutter between them so the page breathes.
   The mask fades the pattern at the page edges so it never feels like a grid. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(
      to bottom,
      rgba(40, 31, 18, 0.18) 0,
      rgba(40, 31, 18, 0.18) 1px,
      transparent 1px,
      transparent 7px,
      rgba(40, 31, 18, 0.18) 7px,
      rgba(40, 31, 18, 0.18) 8px,
      transparent 8px,
      transparent 14px,
      rgba(40, 31, 18, 0.18) 14px,
      rgba(40, 31, 18, 0.18) 15px,
      transparent 15px,
      transparent 21px,
      rgba(40, 31, 18, 0.18) 21px,
      rgba(40, 31, 18, 0.18) 22px,
      transparent 22px,
      transparent 28px,
      rgba(40, 31, 18, 0.18) 28px,
      rgba(40, 31, 18, 0.18) 29px,
      transparent 29px,
      transparent 96px
    );
  background-position: 0 64px;
  -webkit-mask-image:
    linear-gradient(to bottom, transparent 0, #000 120px, #000 calc(100% - 160px), transparent 100%),
    linear-gradient(to right, transparent 0, #000 8%, #000 92%, transparent 100%);
  -webkit-mask-composite: source-in;
          mask-image:
    linear-gradient(to bottom, transparent 0, #000 120px, #000 calc(100% - 160px), transparent 100%),
    linear-gradient(to right, transparent 0, #000 8%, #000 92%, transparent 100%);
          mask-composite: intersect;
  opacity: 0.72;
}

/* A single warm bloom keeps the page from looking flat without adding noise. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 40% at 22% 10%, rgba(185, 120, 36, 0.07), transparent 70%),
    radial-gradient(ellipse 50% 50% at 88% 96%, rgba(47, 111, 95, 0.05), transparent 70%);
}

*::selection {
  background: #f1cf78;
  color: var(--ji-ink);
}

*:focus-visible {
  outline: 3px solid var(--ji-green);
  outline-offset: 3px;
}

header {
  border-bottom: 1px solid rgba(24, 23, 19, 0.16) !important;
  background: rgba(244, 239, 227, 0.86) !important;
  backdrop-filter: blur(18px) saturate(1.1);
}

.header-content,
header {
  font-family: var(--ji-mono);
}

.logo-text,
.site-name {
  font-family: var(--ji-display);
  font-style: italic;
  color: var(--ji-ink);
}

.logo-dot,
.dot.done,
.dot.current {
  background: var(--ji-rouge) !important;
}

.element-badge,
.module-badge,
.section-label,
.insight-label,
.nav-label,
.meta-label,
.cycle-label,
.tempo-label,
.mode-label {
  font-family: var(--ji-mono);
  letter-spacing: 0.08em !important;
  color: var(--ji-brass-deep) !important;
}

.element-badge {
  border-color: rgba(125, 74, 23, 0.42) !important;
  background: rgba(255, 251, 239, 0.54) !important;
}

h1,
h2,
h3,
.hero h1,
.module-title,
.chord-symbol,
.chord-symbol-xl,
.chord-name-big,
.stat-number,
.stat-num {
  text-wrap: balance;
}

h1,
.hero h1 {
  font-family: var(--ji-display);
  letter-spacing: 0 !important;
}

.hero {
  position: relative;
  text-align: center;
  padding-top: clamp(4rem, 9vw, 7rem) !important;
  padding-bottom: clamp(4rem, 9vw, 7rem) !important;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 6.8rem) !important;
  line-height: 0.92 !important;
  max-width: 9ch;
  margin-bottom: 1.5rem !important;
}

.hero h1 em {
  color: var(--ji-rouge) !important;
}

.hero .tagline {
  max-width: 58ch !important;
  margin-left: 0 !important;
  color: var(--ji-ink-soft) !important;
  font-size: 1.05rem !important;
  line-height: 1.75 !important;
}

.title-block {
  position: relative;
  border-left: 0 !important;
  padding: 1.25rem 0 1.35rem 1.5rem !important;
  margin-bottom: 2.75rem !important;
}

.title-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.25rem;
  bottom: 0.25rem;
  width: 5px;
  background: linear-gradient(var(--ji-rouge), var(--ji-brass) 55%, var(--ji-green));
  border-radius: 99px;
}

.definition,
.manifesto p,
.module-desc,
.context-card p,
.explainer-content p,
.insight-text,
.cycle-description,
.tone-hint,
.tritone-card-body {
  color: var(--ji-ink-soft) !important;
  text-wrap: pretty;
}

.manifesto,
.explainer,
.cta-section,
.context-block,
.insight,
.cycle-selector-group,
.chord-display,
.tone-row,
.pattern-preview,
.lick-stage,
.stat-block,
.tritone-card,
.connection-callout,
.scale-builder,
.resolution-stage,
.modules {
  border-color: rgba(24, 23, 19, 0.16) !important;
}

.module-card,
.context-card,
.method-item,
.pattern-card,
.scale-card,
.tone-row,
.pattern-preview,
.chord-display,
.insight,
.stat-block,
.tritone-card,
.connection-callout,
.lick-stage,
.resolution-stage,
.scale-builder {
  background:
    linear-gradient(180deg, rgba(255, 252, 244, 0.78), rgba(236, 226, 208, 0.72)) !important;
  border: 1px solid rgba(24, 23, 19, 0.18) !important;
  border-radius: var(--ji-radius) !important;
  box-shadow: none !important;
}

.module-card {
  position: relative;
  overflow: hidden;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease, background-color 180ms ease !important;
}

.module-card::after {
  content: "";
  position: absolute;
  inset: auto 1.25rem 1rem 1.25rem;
  height: 5px;
  background: repeating-linear-gradient(90deg, var(--ji-ink) 0 12px, transparent 12px 18px);
  opacity: 0.18;
}

.module-card:hover,
.nav-item:hover,
.pattern-card:hover,
.scale-card:hover {
  transform: translateY(-3px);
  border-color: rgba(141, 39, 54, 0.55) !important;
  box-shadow: var(--ji-shadow-sm) !important;
}

.module-title,
.context-card-title,
.method-item h3,
.tritone-card-title {
  color: var(--ji-ink) !important;
}

.cta-button,
.cta-button-light,
.btn,
.pill,
.cycle-pill,
.mode-pill,
.tab-btn,
.pattern-card,
.scale-card,
.tone-btn,
.scale-step,
.beat-cell {
  border-radius: var(--ji-radius) !important;
  font-family: var(--ji-mono) !important;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem !important;
}

.actions .tempo-control {
  min-width: min(100%, 220px);
}

.cta-button,
.btn-primary,
.btn:not(.btn-secondary),
.cta-button-light {
  background: var(--ji-ink) !important;
  border-color: var(--ji-ink) !important;
  color: var(--ji-paper) !important;
  box-shadow: 5px 5px 0 var(--ji-brass) !important;
}

.cta-button:hover,
.btn-primary:hover,
.btn:not(.btn-secondary):hover,
.cta-button-light:hover {
  background: var(--ji-rouge) !important;
  border-color: var(--ji-rouge) !important;
  color: #fff8e8 !important;
  transform: translate(-1px, -1px);
  box-shadow: 7px 7px 0 var(--ji-green) !important;
}

.btn-secondary,
.pill,
.cycle-pill,
.mode-pill,
.tab-btn {
  background: rgba(255, 252, 244, 0.68) !important;
  border-color: rgba(24, 23, 19, 0.2) !important;
  color: var(--ji-ink-soft) !important;
}

.pill:hover,
.cycle-pill:hover,
.mode-pill:hover,
.tab-btn:hover {
  border-color: var(--ji-brass) !important;
  color: var(--ji-brass-deep) !important;
}

.pill.active,
.cycle-pill.active,
.mode-pill.active,
.tab-btn.active,
.pattern-card.active,
.scale-card.active {
  background: var(--ji-green) !important;
  border-color: var(--ji-green) !important;
  color: #f9f4e8 !important;
}

.tone-btn,
.tone-bubble,
.preview-step,
.phrase-note,
.note-pip,
.scale-step,
.beat-cell,
.legend-swatch,
.conn-badge {
  box-shadow: none !important;
}

.tone-btn,
.preview-step,
.phrase-note,
.scale-step,
.beat-cell,
.note-pip,
.tone-bubble {
  border-color: rgba(24, 23, 19, 0.2) !important;
}

.tone-btn:hover,
.scale-step:hover,
.beat-cell:hover {
  border-color: var(--ji-rouge) !important;
}

.wave-bar,
.bar,
.active,
.playing,
.in-phrase,
.selected {
  accent-color: var(--ji-rouge);
}

input[type="range"] {
  accent-color: var(--ji-green);
}

.nav-strip {
  gap: 1rem !important;
}

.nav-item {
  background: rgba(255, 252, 244, 0.64) !important;
  border: 1px solid rgba(24, 23, 19, 0.16) !important;
  border-radius: var(--ji-radius) !important;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease !important;
}

footer {
  background: #191713 !important;
  color: #f3ead8 !important;
}

footer a,
footer p,
footer .footer-bottom {
  color: rgba(243, 234, 216, 0.76) !important;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 820px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: left !important;
  }

  .hero::after {
    min-height: 260px;
    width: min(78vw, 320px);
    justify-self: center;
  }
}

@media (max-width: 620px) {
  body {
    background-size: 64px 100%, 100% 80px, auto;
  }

  header,
  .header-content {
    align-items: flex-start !important;
  }

  .hero::before {
    left: 1.25rem;
  }

  .hero h1 {
    font-size: clamp(2.7rem, 18vw, 4.35rem) !important;
  }

  .cta-button,
  .cta-button-light,
  .btn {
    min-height: 44px;
  }

  .actions {
    align-items: stretch;
  }

  .actions .btn,
  .actions .tempo-control {
    width: 100%;
    margin-left: 0 !important;
  }

  .module-card::after {
    display: none;
  }
}