:root {
  --bg-0: #07080c;
  --bg-1: #0f1118;
  --bg-2: #161a24;
  --line: #232838;
  --ink: #e7e9ee;
  --ink-dim: #8c92a3;
  --ink-faint: #555a6b;
  --accent: #7fffb0;
  --accent-warm: #ffb86b;
  --accent-soft: rgba(127, 255, 176, 0.12);
  --love: #ff6b8a;
  --love-soft: rgba(255, 107, 138, 0.16);
  --serif: "Cormorant Garamond", "Iowan Old Style", "Palatino", Georgia, serif;
  --mono: "JetBrains Mono", "SF Mono", "Menlo", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-0);
  color: var(--ink);
  font-family: var(--sans);
  min-height: 100%;
}

body {
  background:
    radial-gradient(900px 600px at 80% -10%, rgba(127, 255, 176, 0.07), transparent 60%),
    radial-gradient(700px 500px at -10% 110%, rgba(255, 184, 107, 0.05), transparent 60%),
    var(--bg-0);
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Masthead ─────────────────────────────────────────────────────── */

.masthead {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 32px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  z-index: 50;
}

.masthead__logo svg { display: block; }

.masthead__titles { flex: 1; min-width: 0; }

.masthead__titles h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  letter-spacing: 0.01em;
}

.tagline {
  margin: 4px 0 0;
  color: var(--ink-dim);
  font-size: 0.92rem;
  font-style: italic;
}

.masthead__nav { display: flex; gap: 10px; }

/* ── Buttons ──────────────────────────────────────────────────────── */

.primary-btn,
.ghost-btn {
  font: inherit;
  font-size: 0.92rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-1);
  color: var(--ink);
  cursor: pointer;
  transition: transform 80ms ease, background 160ms ease, border-color 160ms ease, color 160ms ease;
  user-select: none;
}

.primary-btn {
  background: linear-gradient(180deg, #1a2030, #11141d);
  border-color: #2a3146;
}

.primary-btn:hover:not(:disabled),
.ghost-btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.primary-btn--accent {
  background: linear-gradient(180deg, rgba(127,255,176,0.18), rgba(127,255,176,0.05));
  border-color: rgba(127,255,176,0.45);
  color: var(--accent);
}

.primary-btn--accent:hover:not(:disabled) {
  background: linear-gradient(180deg, rgba(127,255,176,0.28), rgba(127,255,176,0.1));
}

.primary-btn--accent.is-active {
  background: linear-gradient(180deg, rgba(255,107,138,0.22), rgba(255,107,138,0.06));
  border-color: rgba(255,107,138,0.55);
  color: var(--love);
  animation: pulse 1.6s ease-in-out infinite;
}

.primary-btn--warm {
  background: linear-gradient(180deg, rgba(255,184,107,0.18), rgba(255,184,107,0.04));
  border-color: rgba(255,184,107,0.45);
  color: var(--accent-warm);
}
.primary-btn--warm:hover:not(:disabled) {
  background: linear-gradient(180deg, rgba(255,184,107,0.28), rgba(255,184,107,0.08));
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,107,138,0); }
  50%      { box-shadow: 0 0 0 6px rgba(255,107,138,0.08); }
}

.primary-btn:disabled, .ghost-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.primary-btn:active:not(:disabled),
.ghost-btn:active:not(:disabled) { transform: translateY(1px); }

.btn-glyph {
  display: inline-block;
  font-family: var(--mono);
  font-size: 1.05em;
  line-height: 1;
}

/* ── Control deck ─────────────────────────────────────────────────── */

.control-deck {
  margin: 24px 32px 12px;
  padding: 18px 22px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.deck-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.deck-row--meta {
  border-top: 1px dashed var(--line);
  padding-top: 14px;
}

.meta-block {
  display: flex;
  flex-direction: column;
  min-width: 110px;
  padding-right: 12px;
  border-right: 1px solid var(--line);
}

.meta-block:nth-of-type(2) { border-right: none; }

.meta-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
}

.meta-value {
  font-family: var(--mono);
  font-size: 1.4rem;
  color: var(--accent);
  margin-top: 2px;
}

.slider {
  display: flex;
  flex-direction: column;
  flex: 1 1 160px;
  min-width: 150px;
  gap: 4px;
}

.slider__label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
  display: flex;
  justify-content: space-between;
}

.slider__label output { color: var(--accent-warm); font-family: var(--mono); }

.slider input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  cursor: pointer;
}

.slider input[type="range"]::-webkit-slider-runnable-track {
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-warm));
  border-radius: 2px;
}
.slider input[type="range"]::-moz-range-track {
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-warm));
  border-radius: 2px;
}

.slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-0);
  border: 2px solid var(--accent);
  margin-top: -6px;
  box-shadow: 0 0 8px rgba(127,255,176,0.3);
}
.slider input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg-0); border: 2px solid var(--accent);
}

.slider--select select {
  font: inherit;
  background: var(--bg-2);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 10px;
}

/* ── Terrarium ────────────────────────────────────────────────────── */

.terrarium {
  margin: 12px 32px 32px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 16px;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 80px 32px;
  text-align: center;
  border: 1px dashed var(--line);
  border-radius: 18px;
  color: var(--ink-dim);
}
.empty-state h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.6rem;
  margin: 0 0 10px;
  color: var(--ink);
}
.empty-state p { max-width: 540px; margin: 0 auto; }

/* ── Creature card ───────────────────────────────────────────────── */

.creature {
  background: linear-gradient(180deg, var(--bg-1), #0c0f17);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 200ms ease, transform 200ms ease, box-shadow 200ms ease;
  position: relative;
}

.creature::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 70% 0%, rgba(127,255,176,0), transparent 60%);
  transition: background 240ms ease;
}

.creature.is-playing {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(127,255,176,0.4), 0 8px 24px -10px rgba(127,255,176,0.4);
}
.creature.is-playing::before {
  background: radial-gradient(circle at 70% 0%, rgba(127,255,176,0.18), transparent 60%);
}

.creature.is-loved {
  border-color: rgba(255, 107, 138, 0.55);
}
.creature.is-loved .creature__head { background: var(--love-soft); }

.creature__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
}

.creature__id {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
}

.creature__num {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}

.creature__name {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lineage-tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--accent-warm);
  padding: 3px 7px;
  border: 1px solid rgba(255, 184, 107, 0.35);
  border-radius: 999px;
  white-space: nowrap;
}

.creature__roll {
  padding: 12px 14px 4px;
}
.creature__roll canvas {
  width: 100%;
  height: auto;
  display: block;
  background: #050609;
  border-radius: 10px;
  border: 1px solid var(--line);
}

.creature__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px 14px;
}

.play-btn,
.like-btn,
.save-btn,
.midi-btn {
  font: inherit;
  font-size: 0.85rem;
  background: var(--bg-2);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 160ms, color 160ms, border-color 160ms;
}
.play-btn { padding: 7px 11px; color: var(--accent); }
.play-btn:hover { background: rgba(127,255,176,0.1); border-color: var(--accent); }

.like-btn .heart { font-size: 1.1rem; line-height: 1; color: var(--ink-faint); }
.like-btn[aria-pressed="true"] {
  background: var(--love-soft);
  border-color: rgba(255, 107, 138, 0.6);
}
.like-btn[aria-pressed="true"] .heart { color: var(--love); }
.like-btn[aria-pressed="true"] .heart::before { content: "♥"; }
.like-btn[aria-pressed="true"] .heart::after { content: ""; }
.like-btn[aria-pressed="true"] .heart { font-size: 0; }
.like-btn[aria-pressed="true"] .heart::before { font-size: 1.1rem; }

.save-btn:hover, .midi-btn:hover {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}

.midi-glyph {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

/* ── Diary panel ─────────────────────────────────────────────────── */

.diary {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(420px, 92vw);
  background: var(--bg-1);
  border-left: 1px solid var(--line);
  z-index: 80;
  box-shadow: -16px 0 40px rgba(0,0,0,0.4);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 240ms ease;
}
.diary[data-open="true"] { transform: translateX(0); }

.diary__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}
.diary__header h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.4rem;
}

.diary__list {
  flex: 1;
  overflow-y: auto;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.diary__empty { color: var(--ink-dim); }

.diary-entry {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.diary-entry__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}
.diary-entry__name {
  font-family: var(--serif);
  font-size: 1.1rem;
}
.diary-entry__meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
}
.diary-entry__roll canvas {
  width: 100%;
  height: 64px;
  display: block;
  background: #050609;
  border-radius: 8px;
}
.diary-entry__actions {
  display: flex;
  gap: 8px;
}
.diary-entry__actions button {
  flex: 1;
  font: inherit;
  font-size: 0.78rem;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-1);
  color: var(--ink);
  cursor: pointer;
}
.diary-entry__actions button:hover { border-color: var(--accent); color: var(--accent); }
.diary-entry__actions .danger:hover { border-color: var(--love); color: var(--love); }

/* ── Help dialog ─────────────────────────────────────────────────── */

.help-dialog {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg-1);
  color: var(--ink);
  max-width: 560px;
  padding: 0;
}
.help-dialog::backdrop { background: rgba(5,6,9,0.7); backdrop-filter: blur(2px); }
.help-dialog article { padding: 24px 28px; }
.help-dialog h2 {
  font-family: var(--serif);
  font-weight: 500;
  margin: 0 0 12px;
}
.help-dialog h3 {
  margin: 18px 0 6px;
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.help-dialog ol, .help-dialog ul { padding-left: 20px; line-height: 1.55; }
.help-dialog kbd {
  font-family: var(--mono);
  font-size: 0.78rem;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 6px;
}
.help-dialog form {
  margin-top: 20px;
  display: flex;
  justify-content: flex-end;
}

/* ── Misc ────────────────────────────────────────────────────────── */

.audio-prompt {
  margin: 12px 32px;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(255, 184, 107, 0.08);
  border: 1px dashed rgba(255, 184, 107, 0.4);
  color: var(--accent-warm);
  font-size: 0.92rem;
}

.legend {
  margin-top: auto;
  padding: 18px 32px 26px;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.legend__small { font-size: 0.78rem; opacity: 0.8; }

/* ── Animations ─────────────────────────────────────────────────── */

@keyframes spawn {
  0% { opacity: 0; transform: translateY(8px) scale(0.98); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}
.creature { animation: spawn 360ms cubic-bezier(0.2, 0.7, 0.3, 1) both; }
.creature:nth-child(2) { animation-delay: 30ms; }
.creature:nth-child(3) { animation-delay: 60ms; }
.creature:nth-child(4) { animation-delay: 90ms; }
.creature:nth-child(5) { animation-delay: 120ms; }
.creature:nth-child(6) { animation-delay: 150ms; }
.creature:nth-child(7) { animation-delay: 180ms; }
.creature:nth-child(8) { animation-delay: 210ms; }

@media (prefers-reduced-motion: reduce) {
  .creature { animation: none; }
}

/* ── Responsive ─────────────────────────────────────────────────── */

@media (max-width: 720px) {
  .masthead { padding: 14px 18px; }
  .control-deck { margin: 16px; padding: 14px 16px; }
  .terrarium { margin: 12px 16px 24px; }
  .legend { padding: 14px 18px 22px; }
}