/**
 * GrooveForge marketing site — shared styles.
 * Palette echoes the splash / icon: deep charcoal, cyan, and warm orange accents.
 */

@import url("https://fonts.googleapis.com/css2?family=Lexend:wght@300;400;600;700&family=Sora:wght@400;600;700&display=swap");

:root {
  --bg-deep: #0a0a0c;
  --bg-panel: #12121a;
  --bg-elevated: #1a1a24;
  --border: rgba(0, 229, 255, 0.12);
  --text: #e8eaef;
  --text-muted: #9aa3b2;
  --cyan: #00e5ff;
  --cyan-dim: rgba(0, 229, 255, 0.55);
  --orange: #ff8c00;
  --orange-bright: #ffb347;
  --glow-cyan: 0 0 24px rgba(0, 229, 255, 0.35);
  --glow-orange: 0 0 28px rgba(255, 140, 0, 0.4);
  --radius: 14px;
  --radius-sm: 8px;
  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "Lexend", system-ui, sans-serif;
  --header-h: 64px;
}

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

html {
  scroll-behavior: smooth;
  /* Sticky header (~52–64px) — in-page anchors stay visible */
  scroll-padding-top: 4.5rem;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(0, 229, 255, 0.08), transparent),
    radial-gradient(ellipse 80% 50% at 100% 50%, rgba(255, 140, 0, 0.05), transparent),
    radial-gradient(ellipse 60% 40% at 0% 80%, rgba(0, 229, 255, 0.04), transparent);
}

/* Subtle film grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.04;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a {
  color: var(--cyan);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  color: #5ef;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 10000;
  padding: 0.75rem 1.25rem;
  background: var(--orange);
  color: #000;
  font-weight: 600;
}

.skip-link:focus {
  left: 0;
}

/* ── Header ─────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(10, 10, 12, 0.92);
  backdrop-filter: blur(12px);
}

/**
 * Checkbox is off-screen but focusable for keyboard users who tab to it.
 */
.nav-toggle-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  opacity: 0;
}

.header-inner {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.5rem 1.25rem;
  min-height: 52px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
}

@media (min-width: 901px) {
  .header-inner {
    min-height: var(--header-h);
    padding: 0 1.25rem;
    flex-wrap: nowrap;
  }
}

/**
 * Language switch + hamburger (hamburger hidden on wide screens).
 */
.header-triggers {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  margin-left: auto;
}

@media (min-width: 901px) {
  .header-triggers {
    margin-left: 0;
    order: 3;
  }
}

.nav-toggle-label {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
}

.nav-toggle-label:hover {
  border-color: rgba(0, 229, 255, 0.35);
  color: var(--cyan);
}

.nav-toggle-input:checked + .brand ~ .header-triggers .nav-toggle-label {
  border-color: rgba(255, 140, 0, 0.5);
  color: var(--orange-bright);
}

@media (max-width: 900px) {
  .nav-toggle-label {
    display: inline-flex;
  }

  .brand {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 0.95rem;
  }

  .brand img {
    width: 32px;
    height: 32px;
  }

  /**
   * Collapsible nav: one short top row (logo + lang + Menu), links below when open.
   */
  .site-nav {
    flex-basis: 100%;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    flex-direction: column;
    align-items: stretch;
    align-content: flex-start;
    gap: 0;
    padding: 0;
    margin: 0;
    border-top: 1px solid transparent;
    transition: max-height 0.28s ease, padding 0.2s ease, border-color 0.2s ease;
  }

  .nav-toggle-input:checked ~ .site-nav {
    max-height: min(75vh, 380px);
    overflow-y: auto;
    padding-top: 0.5rem;
    margin-top: 0.15rem;
    border-top-color: var(--border);
    gap: 0.1rem;
    -webkit-overflow-scrolling: touch;
  }

  .site-nav a {
    padding: 0.5rem 0.35rem;
    border-radius: 6px;
  }

  .site-nav a:hover {
    background: rgba(0, 229, 255, 0.06);
  }

  .site-nav .nav-cta {
    margin-top: 0.35rem;
    justify-content: center;
    text-align: center;
  }
}

@media (min-width: 901px) {
  .nav-toggle-label {
    display: none !important;
  }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--orange-bright), var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
  filter: brightness(1.1);
}

.brand img {
  border-radius: 12px;
  box-shadow: var(--glow-orange);
}

@media (min-width: 901px) {
  .brand {
    order: 1;
  }

  .site-nav {
    order: 2;
    flex: 1;
    justify-content: flex-end;
  }

  .header-triggers {
    order: 3;
  }
}

/**
 * Compact EN / FR toggle; current language is non-linked for clarity.
 */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.lang-switch a {
  color: var(--text-muted);
  text-decoration: none;
}

.lang-switch a:hover {
  color: var(--cyan);
  text-decoration: none;
}

.lang-current {
  color: var(--cyan);
}

.lang-sep {
  color: var(--border);
  user-select: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 1rem;
  font-size: 0.88rem;
  font-weight: 500;
}

.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.35rem 0;
}

.site-nav a:hover {
  color: var(--cyan);
  text-decoration: none;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--orange), #e67300);
  color: #0a0a0c !important;
  font-weight: 600;
  box-shadow: var(--glow-orange);
}

.nav-cta:hover {
  filter: brightness(1.08);
  text-decoration: none;
  color: #0a0a0c !important;
}

/**
 * Homepage emphasis — learning / practice story (Jam, MIDI, rhythm + looper).
 */
.learn-strip {
  margin: 2.5rem 0 1rem;
  padding: 1.5rem 1.35rem;
  border-radius: var(--radius);
  border: 1px solid rgba(0, 229, 255, 0.18);
  background: linear-gradient(145deg, rgba(0, 229, 255, 0.06), rgba(255, 140, 0, 0.04));
}

.learn-strip .section-title {
  margin-top: 0;
  margin-bottom: 1rem;
}

.learn-strip .card h3 {
  color: var(--cyan);
  font-size: 1rem;
}

/* ── Layout ─────────────────────────────────────────────────── */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.page-hero {
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  background: linear-gradient(90deg, var(--cyan), var(--orange-bright));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-hero .lead {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 52ch;
}

/* ── Home hero ──────────────────────────────────────────────── */
.hero {
  display: grid;
  gap: 2.5rem;
  align-items: center;
  padding: 2rem 0 3rem;
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: 1fr 1fr;
    padding: 3rem 0 4rem;
  }
}

.hero-copy h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.85rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: linear-gradient(135deg, var(--orange-bright), var(--orange), #ff6b00);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: none;
  filter: drop-shadow(0 0 40px rgba(255, 140, 0, 0.25));
}

.hero-tagline {
  font-size: 1rem;
  color: var(--cyan-dim);
  font-weight: 300;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero-copy p {
  color: var(--text-muted);
  max-width: 48ch;
  margin-bottom: 1.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, filter 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), #00a8cc);
  color: #041014;
  box-shadow: var(--glow-cyan);
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost {
  background: transparent;
  color: var(--orange-bright);
  border: 1px solid rgba(255, 140, 0, 0.45);
}

.hero-visual {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.55), var(--glow-cyan);
}

.hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 60%, rgba(10, 10, 12, 0.5));
}

/* ── Cards & grids ───────────────────────────────────────────── */
.section-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 3rem 0 1.25rem;
  color: var(--text);
}

.section-title:first-of-type {
  margin-top: 0;
}

.card-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

@media (min-width: 600px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .card-grid.three {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  border-color: rgba(0, 229, 255, 0.28);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
  color: var(--orange-bright);
}

.card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.card a.stretched::after {
  content: "";
  position: absolute;
  inset: 0;
}

.card {
  position: relative;
}

/* ── Screenshots ────────────────────────────────────────────── */
/**
 * Single screenshot inside handbook pages (prose).
 */
.figure-doc {
  margin: 1.5rem 0;
}

.figure-doc img {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: middle;
}

.figure-doc figcaption {
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/**
 * One app preview on the homepage (not a gallery).
 */
.home-app-preview {
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
}

.figure-card {
  margin: 0;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  overflow: hidden;
}

.figure-card img {
  width: 100%;
  height: auto;
  display: block;
}

.figure-card figcaption {
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Prose (static docs) ───────────────────────────────────── */
.prose h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 2rem 0 0.75rem;
  color: var(--cyan);
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border);
}

.prose h3 {
  font-size: 1.05rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--orange-bright);
}

.prose p,
.prose li {
  color: var(--text-muted);
}

.prose ul {
  padding-left: 1.25rem;
}

.prose code {
  font-family: ui-monospace, "Cascadia Code", monospace;
  font-size: 0.88em;
  background: #0d1117;
  border: 1px solid var(--border);
  padding: 0.12em 0.4em;
  border-radius: 4px;
  color: #a8d8ff;
}

.prose pre {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.5;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0;
}

.prose th,
.prose td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  text-align: left;
}

.prose th {
  background: var(--bg-panel);
  color: var(--text);
}

/* ── Markdown-injected (#content) ───────────────────────────── */
#content h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: 0.5rem;
  background: linear-gradient(90deg, var(--orange-bright), var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

#content h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--cyan);
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border);
}

#content h3 {
  font-size: 1.05rem;
  color: var(--orange-bright);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

#content p,
#content li {
  color: var(--text-muted);
}

#content ul {
  list-style: none;
  padding-left: 0;
}

#content ul li {
  padding: 0.2rem 0 0.2rem 1.35rem;
  position: relative;
}

#content ul li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--orange);
}

#content strong {
  color: var(--text);
}

#content code {
  font-family: ui-monospace, monospace;
  background: #0d1117;
  border: 1px solid var(--border);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-size: 0.88em;
  color: #a8d8ff;
}

#content a {
  color: var(--cyan);
}

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  margin-top: 4rem;
  padding: 2rem 1.25rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.site-footer a {
  color: var(--cyan);
}

/* ── Download tables ─────────────────────────────────────────── */
.download-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 1rem 0 2rem;
}

.download-table th,
.download-table td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.65rem;
  text-align: left;
}

.download-table th {
  background: var(--bg-panel);
  color: var(--text);
}

.download-table a {
  font-weight: 600;
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-linux {
  background: rgba(0, 229, 255, 0.15);
  color: var(--cyan);
}

.badge-macos {
  background: rgba(255, 180, 71, 0.15);
  color: var(--orange-bright);
}

.badge-web {
  background: rgba(160, 160, 255, 0.12);
  color: #c4c4ff;
}