:root {
  --bg: #0f1117;
  --panel: #181c26;
  --panel-2: #1f2432;
  --text: #e8eaf0;
  --muted: #8a90a3;
  --accent: #4fd1c5;
  --accent-2: #f6ad55;
  --danger: #fc8181;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.5;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  border-bottom: 1px solid #262b3a;
  flex-wrap: wrap;
  gap: 0.75rem;
}

h1 { margin: 0; font-size: 1.6rem; letter-spacing: 0.02em; }
.tagline { margin: 0; color: var(--muted); font-size: 0.9rem; }

.header-actions { display: flex; align-items: center; gap: 0.9rem; }

.mcp-indicator { display: flex; align-items: center; gap: 0.4rem; font-size: 0.85rem; color: var(--muted); }
#mcp-status { width: 10px; height: 10px; border-radius: 50%; display: inline-block; background: #555; }
#mcp-status[data-status="connected"] { background: var(--accent); box-shadow: 0 0 8px var(--accent); }
#mcp-status[data-status="connecting"] { background: var(--accent-2); }

.pro-badge {
  background: linear-gradient(135deg, var(--accent-2), #ed8936);
  color: #1a1408;
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.btn-primary, .btn-secondary {
  border: 0;
  border-radius: var(--radius);
  padding: 0.5rem 1rem;
  font-weight: 600;
  cursor: pointer;
}
.btn-primary { background: var(--accent); color: #08302c; }
.btn-primary:hover { filter: brightness(1.1); }
.btn-secondary { background: var(--panel-2); color: var(--text); border: 1px solid #303750; }
.btn-secondary:hover { border-color: var(--danger); color: var(--danger); }

main { max-width: 1100px; margin: 0 auto; padding: 1.5rem 2rem 3rem; }

.synth-panel {
  background: var(--panel);
  border: 1px solid #262b3a;
  border-radius: 14px;
  padding: 1.25rem;
}

.top-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.preset-picker { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; color: var(--muted); }

select, input[type="text"] {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid #303750;
  border-radius: 6px;
  padding: 0.35rem 0.5rem;
  font: inherit;
}

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

fieldset {
  border: 1px solid #2a3040;
  border-radius: var(--radius);
  background: var(--panel-2);
  padding: 0.6rem 0.75rem;
  margin: 0;
}
legend { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); padding: 0 0.3rem; }
fieldset label { display: block; font-size: 0.75rem; color: var(--muted); margin-bottom: 0.35rem; }
fieldset input[type="range"] { width: 100%; accent-color: var(--accent); }
fieldset select { width: 100%; margin-top: 0.15rem; }

/* Keyboard */
.keyboard {
  display: flex;
  position: relative;
  height: 150px;
  user-select: none;
  touch-action: none;
}
.key { border: 1px solid #10131b; border-radius: 0 0 5px 5px; padding: 0; cursor: pointer; }
.key.white { flex: 1; background: #f4f5f8; }
.key.white:active, .key.white.active { background: var(--accent); }
.key.black {
  flex: 0 0 0;
  position: relative;
  width: 0;
  z-index: 2;
}
.key.black::after {
  content: "";
  position: absolute;
  top: 0; left: -12px;
  width: 24px; height: 92px;
  background: #14161d;
  border: 1px solid #000;
  border-radius: 0 0 4px 4px;
}
.key.black:active::after, .key.black.active::after { background: var(--accent); }

.hint { color: var(--muted); font-size: 0.8rem; margin-top: 0.75rem; }
kbd { background: var(--panel-2); border: 1px solid #303750; border-radius: 4px; padding: 0 0.3em; font-size: 0.85em; }

/* MCP promo */
.mcp-promo {
  margin-top: 2rem;
  background: linear-gradient(135deg, #16202c, #131826);
  border: 1px solid #24405a;
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
}
.mcp-promo pre {
  background: #0b0e14;
  border-radius: 8px;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  color: #9fe8df;
}

/* Gear / affiliate */
.gear { margin-top: 2.5rem; }
.gear-intro { color: var(--muted); }
.gear-disclosure { display: block; font-size: 0.75rem; margin-top: 0.25rem; }
.gear-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
}
.gear-card {
  display: block;
  background: var(--panel);
  border: 1px solid #262b3a;
  border-radius: var(--radius);
  padding: 1rem;
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.gear-card:hover { border-color: var(--accent-2); transform: translateY(-2px); }
.gear-card h3 { margin: 0 0 0.4rem; font-size: 1rem; }
.gear-card p { margin: 0 0 0.6rem; color: var(--muted); font-size: 0.85rem; }
.gear-cta { color: var(--accent-2); font-size: 0.85rem; font-weight: 600; }

/* Pro modal */
dialog {
  background: var(--panel);
  color: var(--text);
  border: 1px solid #303750;
  border-radius: 14px;
  padding: 1.5rem 2rem;
  max-width: 420px;
}
dialog::backdrop { background: rgba(5, 7, 12, 0.7); }
dialog .close { position: absolute; top: 0.75rem; right: 0.75rem; background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 1rem; }
dialog ul { padding-left: 1.2rem; }
.price { color: var(--accent-2); font-weight: 700; }
#unlock-form { display: flex; gap: 0.5rem; margin-top: 0.5rem; }
#unlock-form input { flex: 1; }
.error { color: var(--danger); font-size: 0.85rem; min-height: 1.2em; }

footer { text-align: center; color: var(--muted); font-size: 0.8rem; padding: 2rem; }
footer a { color: var(--accent); }