/* =========================================================================
   The Drummer's Woodshed — design system
   A practice-first drum lesson site. Dark, warm, energetic.
   ========================================================================= */

:root {
  --bg:        #0e1116;
  --bg-2:      #161b22;
  --bg-3:      #1c232d;
  --panel:     #181f29;
  --border:    #29333f;
  --text:      #e7edf3;
  --muted:     #93a1b1;
  --faint:     #5d6b7a;

  --accent:    #ff7a18;   /* warm amber — energy */
  --accent-2:  #ffb648;
  --accent-dim:#a8500f;
  --good:      #36d399;
  --warn:      #fbbd23;
  --bad:       #f87272;
  --pro:       #ffd24a;

  --radius:    14px;
  --radius-sm: 9px;
  --shadow:    0 10px 30px rgba(0,0,0,.35);
  --maxw:      1120px;

  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background:
    radial-gradient(1100px 600px at 80% -10%, rgba(255,122,24,.10), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(72,140,255,.07), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { color: var(--accent); }

h1, h2, h3 { line-height: 1.15; margin: 0 0 .5em; letter-spacing: -0.02em; }
h1 { font-size: clamp(2rem, 4vw, 3.1rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
p  { color: var(--muted); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.section { padding: 64px 0; }
.muted { color: var(--muted); }
.center { text-align: center; }
.mono { font-family: var(--mono); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  border: 1px solid transparent; border-radius: 999px;
  padding: 11px 20px; font-size: .95rem; font-weight: 600; font-family: inherit;
  cursor: pointer; transition: transform .08s ease, background .15s ease, border-color .15s;
  background: var(--bg-3); color: var(--text); text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: linear-gradient(180deg, var(--accent-2), var(--accent)); color: #20140a; border: none; }
.btn-primary:hover { color: #20140a; }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 14px 26px; font-size: 1.05rem; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(14,17,22,.82); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -.02em;
  color: var(--text); font-size: 1.12rem; }
.brand .logo { width: 30px; height: 30px; }
.nav-links { display: flex; gap: 6px; margin-left: 12px; flex: 1; }
.nav-links a {
  color: var(--muted); padding: 8px 13px; border-radius: 8px; font-weight: 500; font-size: .95rem;
}
.nav-links a:hover { color: var(--text); background: var(--bg-2); }
.nav-links a.active { color: var(--accent); background: rgba(255,122,24,.10); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.6rem; cursor: pointer; }

.pill {
  font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em;
  padding: 3px 9px; border-radius: 999px;
}
.pill-pro { background: linear-gradient(180deg,#ffe08a,#ffd24a); color: #3a2c00; }
.pill-free { background: var(--bg-3); color: var(--muted); border: 1px solid var(--border); }
.pill-lock { background: rgba(248,114,114,.14); color: var(--bad); }

/* ---------- Cards / panels ---------- */
.panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
}
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- Hero ---------- */
.hero { padding: 80px 0 56px; }
.hero .eyebrow { color: var(--accent); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; font-size: .8rem; }
.hero h1 { max-width: 16ch; }
.hero p.lead { font-size: 1.2rem; max-width: 54ch; color: var(--muted); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 26px; }
.hero-stats { display: flex; gap: 40px; margin-top: 44px; flex-wrap: wrap; }
.hero-stats .stat .n { font-size: 2rem; font-weight: 800; color: var(--text); }
.hero-stats .stat .l { color: var(--faint); font-size: .9rem; }

/* ---------- Feature grid ---------- */
.feature { padding: 22px; }
.feature .ico { font-size: 1.8rem; margin-bottom: 8px; }
.feature h3 { margin-bottom: 6px; font-size: 1.15rem; }
.feature p { margin: 0; font-size: .95rem; }

/* ---------- Lessons ---------- */
.lesson-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.lesson-card { display: flex; flex-direction: column; overflow: hidden; padding: 0; }
.lesson-thumb {
  position: relative; aspect-ratio: 16/9; background: var(--bg-3);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.lesson-thumb img, .lesson-thumb iframe { width: 100%; height: 100%; object-fit: cover; border: 0; display: block; }
.lesson-thumb .play { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 2.4rem; color: rgba(255,255,255,.92); text-shadow: 0 2px 12px rgba(0,0,0,.6); }
.lesson-thumb .lock-overlay {
  position: absolute; inset: 0; background: rgba(8,10,14,.78); color: var(--text);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; text-align: center; padding: 16px;
}
.lesson-thumb .tag { position: absolute; top: 10px; left: 10px; }
.lesson-thumb .dur { position: absolute; bottom: 10px; right: 10px; background: rgba(0,0,0,.7);
  padding: 2px 8px; border-radius: 6px; font-size: .78rem; font-family: var(--mono); }
.lesson-body { padding: 16px 18px 20px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.lesson-body .meta { color: var(--faint); font-size: .82rem; text-transform: uppercase; letter-spacing: .05em; }
.lesson-body h3 { font-size: 1.08rem; margin: 0; }
.lesson-body p { font-size: .9rem; margin: 0; flex: 1; }

.level-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0 28px; }
.level-tabs button {
  background: var(--bg-2); border: 1px solid var(--border); color: var(--muted);
  padding: 8px 16px; border-radius: 999px; cursor: pointer; font-family: inherit; font-weight: 600; font-size: .9rem;
}
.level-tabs button.active { background: rgba(255,122,24,.12); color: var(--accent); border-color: var(--accent-dim); }

/* ---------- Practice / tools ---------- */
.tool-layout { display: grid; grid-template-columns: 1.3fr 1fr; gap: 22px; align-items: start; }

/* Metronome */
.metronome { text-align: center; }
.bpm-display { font-family: var(--mono); font-size: 5rem; font-weight: 700; line-height: 1; color: var(--text); }
.bpm-display small { font-size: 1rem; color: var(--faint); display: block; letter-spacing: .3em; text-transform: uppercase; }
.bpm-slider { width: 100%; margin: 18px 0; accent-color: var(--accent); }
.beat-row { display: flex; gap: 10px; justify-content: center; margin: 18px 0; flex-wrap: wrap; }
.beat-dot {
  width: 26px; height: 26px; border-radius: 50%; background: var(--bg-3);
  border: 2px solid var(--border); transition: transform .05s, background .05s, box-shadow .05s;
}
.beat-dot.accent { border-color: var(--accent-dim); }
.beat-dot.on { background: var(--accent); border-color: var(--accent-2); transform: scale(1.25);
  box-shadow: 0 0 18px rgba(255,122,24,.7); }
.beat-dot.on.accent { background: var(--accent-2); box-shadow: 0 0 22px rgba(255,182,72,.85); }
.control-row { display: flex; gap: 10px; align-items: center; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.stepper { display: inline-flex; align-items: center; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.stepper button { background: var(--bg-3); border: none; color: var(--text); width: 40px; height: 40px; font-size: 1.3rem; cursor: pointer; }
.stepper button:hover { background: var(--accent); color: #1a0f06; }
.stepper .val { min-width: 56px; text-align: center; font-family: var(--mono); font-weight: 600; }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: 6px; font-weight: 600; }
.field select, .field input[type="text"], .field input[type="email"], .field input[type="password"], .field input[type="number"], .field textarea {
  width: 100%; background: var(--bg); border: 1px solid var(--border); color: var(--text);
  border-radius: var(--radius-sm); padding: 11px 13px; font-family: inherit; font-size: .95rem;
}
.field select:focus, .field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); }

/* Practice timer */
.timer-display { font-family: var(--mono); font-size: 4.2rem; font-weight: 700; text-align: center; letter-spacing: .04em; }
.timer-display.running { color: var(--accent); }
.session-meta { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; color: var(--faint); font-size: .85rem; }

/* ---------- Dashboard ---------- */
.stat-cards { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.stat-card { text-align: center; }
.stat-card .big { font-size: 2.3rem; font-weight: 800; color: var(--accent); font-family: var(--mono); }
.stat-card .lbl { color: var(--muted); font-size: .85rem; }
.goal-bar { height: 12px; background: var(--bg-3); border-radius: 999px; overflow: hidden; margin-top: 10px; }
.goal-bar > span { display: block; height: 100%; background: linear-gradient(90deg,var(--accent),var(--accent-2)); border-radius: 999px; transition: width .4s ease; }

.heatmap { display: grid; grid-template-columns: repeat(53, 1fr); gap: 3px; }
.heatmap .cell { aspect-ratio: 1; border-radius: 3px; background: var(--bg-3); }
.heatmap .cell.l1 { background: rgba(255,122,24,.28); }
.heatmap .cell.l2 { background: rgba(255,122,24,.5); }
.heatmap .cell.l3 { background: rgba(255,122,24,.72); }
.heatmap .cell.l4 { background: var(--accent); }

.log-table { width: 100%; border-collapse: collapse; }
.log-table th, .log-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: .9rem; }
.log-table th { color: var(--faint); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; font-size: .78rem; }
.log-table td .x { color: var(--faint); cursor: pointer; }
.log-table td .x:hover { color: var(--bad); }

/* ---------- Pricing ---------- */
.price-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; align-items: stretch; }
.price-card { display: flex; flex-direction: column; }
.price-card.featured { border-color: var(--accent-dim); box-shadow: 0 0 0 1px var(--accent-dim), var(--shadow); position: relative; }
.price-card.featured::before { content: "Most popular"; position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(180deg,var(--accent-2),var(--accent)); color: #20140a; font-size: .72rem; font-weight: 800;
  padding: 4px 12px; border-radius: 999px; text-transform: uppercase; letter-spacing: .05em; }
.price-card .amount { font-size: 2.6rem; font-weight: 800; }
.price-card .amount span { font-size: 1rem; color: var(--faint); font-weight: 500; }
.price-card ul { list-style: none; padding: 0; margin: 18px 0; flex: 1; }
.price-card li { padding: 7px 0; color: var(--muted); display: flex; gap: 9px; align-items: flex-start; }
.price-card li::before { content: "✓"; color: var(--good); font-weight: 700; }
.price-card li.no { color: var(--faint); }
.price-card li.no::before { content: "—"; color: var(--faint); }

/* ---------- Auth ---------- */
.auth-wrap { max-width: 420px; margin: 0 auto; }
.auth-tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.auth-tabs button { flex: 1; background: var(--bg-2); border: 1px solid var(--border); color: var(--muted);
  padding: 10px; border-radius: var(--radius-sm); cursor: pointer; font-family: inherit; font-weight: 600; }
.auth-tabs button.active { background: rgba(255,122,24,.12); color: var(--accent); border-color: var(--accent-dim); }

/* ---------- Notices ---------- */
.notice { border-radius: var(--radius-sm); padding: 12px 16px; font-size: .9rem; margin: 14px 0; border: 1px solid; }
.notice-info { background: rgba(72,140,255,.08); border-color: rgba(72,140,255,.3); color: #bcd4ff; }
.notice-warn { background: rgba(251,189,35,.08); border-color: rgba(251,189,35,.3); color: #ffe7a8; }
.notice-good { background: rgba(54,211,153,.08); border-color: rgba(54,211,153,.3); color: #b5f0d8; }

.demo-banner { background: rgba(251,189,35,.10); border-bottom: 1px solid rgba(251,189,35,.25);
  color: #ffe7a8; font-size: .85rem; text-align: center; padding: 7px 16px; }
.demo-banner a { color: var(--warn); text-decoration: underline; }

/* ---------- Footer ---------- */
.site-footer { margin-top: auto; border-top: 1px solid var(--border); background: var(--bg-2); padding: 40px 0 30px; }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.footer-grid h4 { color: var(--text); font-size: .95rem; margin-bottom: 10px; }
.footer-grid a { display: block; color: var(--muted); padding: 3px 0; font-size: .9rem; }
.footer-bottom { margin-top: 26px; color: var(--faint); font-size: .82rem; }

/* ---------- Toast ---------- */
#toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--bg-3); border: 1px solid var(--border); color: var(--text); padding: 12px 20px;
  border-radius: 999px; box-shadow: var(--shadow); opacity: 0; pointer-events: none; transition: all .3s; z-index: 100; font-size: .9rem; }
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav-links { position: absolute; top: 64px; left: 0; right: 0; flex-direction: column;
    background: var(--bg-2); border-bottom: 1px solid var(--border); padding: 8px; display: none; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .nav-links { margin-left: 0; }
  .grid-2, .grid-3, .grid-4, .lesson-grid, .price-grid, .stat-cards { grid-template-columns: 1fr; }
  .tool-layout { grid-template-columns: 1fr; }
  .stat-cards { grid-template-columns: repeat(2,1fr); }
}