/* ====== raphSounds — design system ====== */
:root {
  --bg: #0b0b12;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.09);
  --text: #f2f2f8;
  --text-dim: rgba(242, 242, 248, 0.55);
  --accent: #8b5cf6;
  --radius: 22px;
  --font: "Outfit", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { color-scheme: dark; }

body {
  min-height: 100dvh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* ---- fond animé ---- */
.bg-mesh {
  position: fixed;
  inset: -20%;
  z-index: -1;
  background:
    radial-gradient(40% 35% at 20% 25%, rgba(139, 92, 246, 0.22), transparent 70%),
    radial-gradient(35% 30% at 80% 20%, rgba(34, 211, 238, 0.16), transparent 70%),
    radial-gradient(45% 40% at 65% 85%, rgba(244, 114, 182, 0.14), transparent 70%),
    radial-gradient(30% 30% at 15% 80%, rgba(52, 211, 153, 0.10), transparent 70%);
  filter: blur(40px);
  animation: drift 24s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: rotate(0deg) scale(1); }
  to   { transform: rotate(6deg) scale(1.08); }
}
@media (prefers-reduced-motion: reduce) {
  .bg-mesh { animation: none; }
}

/* ---- topbar ---- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px clamp(18px, 4vw, 40px);
}

.brand { display: flex; align-items: center; gap: 14px; }

.brand h1 {
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.brand h1 span {
  background: linear-gradient(120deg, #8b5cf6, #22d3ee);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand-logo {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 30px;
  width: 34px;
  padding: 5px 6px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.35), rgba(34, 211, 238, 0.25));
  border: 1px solid var(--border);
}
.brand-logo .bar {
  flex: 1;
  border-radius: 2px;
  background: linear-gradient(to top, #8b5cf6, #22d3ee);
  animation: equalize 1.1s ease-in-out infinite alternate;
}
.brand-logo .bar:nth-child(1) { height: 40%; animation-delay: 0s; }
.brand-logo .bar:nth-child(2) { height: 90%; animation-delay: 0.15s; }
.brand-logo .bar:nth-child(3) { height: 60%; animation-delay: 0.3s; }
.brand-logo .bar:nth-child(4) { height: 80%; animation-delay: 0.45s; }
@keyframes equalize { to { transform: scaleY(0.45); } }
@media (prefers-reduced-motion: reduce) { .brand-logo .bar { animation: none; } }

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

.ghost-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(12px);
  transition: background 0.2s, transform 0.15s, border-color 0.2s;
}
.ghost-btn:hover { background: var(--surface-hover); transform: translateY(-1px); }
.ghost-btn:active { transform: translateY(0) scale(0.97); }
.ghost-btn.accent {
  border-color: rgba(139, 92, 246, 0.5);
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.25), rgba(34, 211, 238, 0.15));
}

/* ---- grille ---- */
main {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px clamp(18px, 4vw, 40px) 30px;
}

.board {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: clamp(12px, 2vw, 20px);
}

/* ---- pad ---- */
.pad {
  --hue: 265;
  --progress: 0;
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background:
    linear-gradient(155deg,
      hsla(var(--hue), 80%, 60%, 0.16),
      hsla(var(--hue), 80%, 40%, 0.05) 60%),
    var(--surface);
  color: var(--text);
  font-family: inherit;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  backdrop-filter: blur(14px);
  overflow: hidden;
  transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.25s, border-color 0.25s;
}

.pad::before {
  /* halo lumineux interne */
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(70% 60% at 50% 0%, hsla(var(--hue), 90%, 70%, 0.18), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}

.pad:hover {
  transform: translateY(-4px) scale(1.02);
  border-color: hsla(var(--hue), 80%, 65%, 0.55);
  box-shadow:
    0 14px 34px -12px hsla(var(--hue), 85%, 55%, 0.45),
    0 0 0 1px hsla(var(--hue), 80%, 65%, 0.15) inset;
}
.pad:hover::before { opacity: 1; }
.pad:active { transform: translateY(0) scale(0.95); transition-duration: 0.06s; }

.pad:focus-visible {
  outline: 2px solid hsla(var(--hue), 90%, 70%, 0.9);
  outline-offset: 3px;
}

.pad .emoji {
  font-size: clamp(2rem, 5vw, 2.6rem);
  line-height: 1;
  filter: drop-shadow(0 4px 12px hsla(var(--hue), 80%, 50%, 0.5));
  transition: transform 0.2s;
}
.pad:hover .emoji { transform: scale(1.12); }

.pad .label {
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-align: center;
  padding: 0 12px;
  color: var(--text);
}

.pad .key {
  position: absolute;
  top: 10px;
  right: 12px;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 7px;
  background: rgba(0, 0, 0, 0.25);
}

/* anneau de progression pendant la lecture */
.pad .ring {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 2.5px;
  background: conic-gradient(
    hsla(var(--hue), 95%, 65%, 0.95) calc(var(--progress) * 1%),
    transparent 0
  );
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.pad.playing {
  border-color: hsla(var(--hue), 85%, 65%, 0.8);
  box-shadow:
    0 0 30px -4px hsla(var(--hue), 90%, 60%, 0.55),
    0 14px 34px -12px hsla(var(--hue), 85%, 55%, 0.5);
}
.pad.playing .ring { opacity: 1; }
.pad.playing .emoji { animation: bounce 0.5s ease infinite alternate; }
@keyframes bounce { to { transform: scale(1.18) rotate(-4deg); } }
@media (prefers-reduced-motion: reduce) { .pad.playing .emoji { animation: none; } }

.pad.error { animation: shake 0.35s ease; }
@keyframes shake {
  20% { transform: translateX(-7px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(3px); }
}

/* ---- état vide ---- */
.empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-dim);
}
.empty-icon { font-size: 3.5rem; margin-bottom: 18px; }
.empty h2 { color: var(--text); font-weight: 800; margin-bottom: 10px; }
.empty p { line-height: 1.7; }
.empty code {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 7px;
  font-size: 0.85em;
  color: #22d3ee;
}

/* ---- toast ---- */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(20, 20, 30, 0.92);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 20px;
  font-size: 0.88rem;
  font-weight: 600;
  backdrop-filter: blur(12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  max-width: min(90vw, 420px);
  text-align: center;
  z-index: 10;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---- footer ---- */
.hint {
  text-align: center;
  padding: 16px;
  font-size: 0.78rem;
  color: var(--text-dim);
}
kbd {
  background: var(--surface);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 1px 6px;
  font-family: inherit;
  font-size: 0.95em;
}

@media (max-width: 480px) {
  .board { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
  .hint { display: none; }
  .pad .key { display: none; }
}