/* ── Reset & variabili ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0e0d0b;
  --surface:   #1a1916;
  --border:    #2e2c28;
  --accent:    #c8a97e;
  --accent2:   #e8c99e;
  --text:      #e8e4dc;
  --muted:     #7a7468;
  --danger:    #c26060;
  --success:   #7ab87a;
  --radius:    16px;
  --font-head: 'DM Serif Display', Georgia, serif;
  --font-mono: 'DM Mono', 'Courier New', monospace;
}

/* ── Body & sfondo ────────────────────────────────────────────────────── */
html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem 1rem;
}

/* Grain texture overlay */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 128px 128px;
  mix-blend-mode: overlay;
}

/* ── Layout ────────────────────────────────────────────────────────────── */
.container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

/* ── Header ────────────────────────────────────────────────────────────── */
header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
}

.logo-dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 16px var(--accent);
  margin-bottom: .25rem;
}

h1 {
  font-family: var(--font-head);
  font-size: 3.5rem;
  font-style: italic;
  letter-spacing: -.03em;
  color: var(--accent2);
  line-height: 1;
}

.tagline {
  color: var(--muted);
  font-size: .8rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

/* ── Card ──────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  box-shadow: 0 8px 48px rgba(0,0,0,.5);
}

/* ── Steps (visibilità) ────────────────────────────────────────────────── */
.step { display: flex; flex-direction: column; gap: 1.25rem; }
.step.hidden { display: none; }

/* ── Step 1: Nome ─────────────────────────────────────────────────────── */
label {
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

.input-row {
  display: flex;
  gap: .75rem;
}

input[type="text"] {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .8rem 1rem;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .95rem;
  outline: none;
  transition: border-color .2s;
}

input[type="text"]:focus {
  border-color: var(--accent);
}

input[type="text"].shake {
  animation: shake .35s ease;
  border-color: var(--danger);
}

@keyframes shake {
  0%,100%  { transform: translateX(0); }
  25%      { transform: translateX(-6px); }
  75%      { transform: translateX(6px); }
}

/* ── Pulsante REC ─────────────────────────────────────────────────────── */
#btn-start-rec {
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 10px;
  padding: .8rem 1.2rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 500;
  letter-spacing: .08em;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: .4rem;
  white-space: nowrap;
  transition: background .2s, transform .1s;
}

#btn-start-rec:hover  { background: var(--accent2); }
#btn-start-rec:active { transform: scale(.97); }

.btn-icon { font-size: 1rem; }

.hint {
  font-size: .72rem;
  color: var(--muted);
  letter-spacing: .05em;
}

/* ── Step 2: Registrazione ────────────────────────────────────────────── */
.rec-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--muted);
}

.pulse-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--danger);
  flex-shrink: 0;
  animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%     { opacity: .4; transform: scale(.85); }
}

.timer {
  margin-left: auto;
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
}

.waveform {
  width: 100%;
  height: 72px;
  background: var(--bg);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
}

#wave-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.btn-stop {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
  border-radius: 10px;
  padding: .8rem 1.4rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 500;
  letter-spacing: .1em;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: .5rem;
  transition: background .2s, color .2s, transform .1s;
  align-self: flex-start;
}

.btn-stop:hover  { background: var(--danger); color: var(--bg); }
.btn-stop:active { transform: scale(.97); }

/* ── Step 3: Preview ──────────────────────────────────────────────────── */
.preview-title {
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

audio {
  width: 100%;
  border-radius: 8px;
  accent-color: var(--accent);
  background: var(--bg);
}

.preview-info {
  display: flex;
  justify-content: space-between;
  font-size: .78rem;
  color: var(--muted);
}

.btn-group {
  display: flex;
  gap: .75rem;
}

.btn-primary, .btn-secondary {
  flex: 1;
  border-radius: 10px;
  padding: .8rem 1rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 500;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background .2s, color .2s, transform .1s;
}

.btn-primary:active, .btn-secondary:active { transform: scale(.97); }

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border: none;
}

.btn-primary:hover { background: var(--accent2); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

.btn-secondary {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}

.btn-secondary:hover { border-color: var(--muted); color: var(--text); }

/* ── Step 4: Successo ─────────────────────────────────────────────────── */
.success-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(122,184,122,.12);
  border: 1px solid var(--success);
  color: var(--success);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: center;
}

.success-title {
  text-align: center;
  font-family: var(--font-head);
  font-size: 1.6rem;
  font-style: italic;
  color: var(--success);
}

.success-sub {
  text-align: center;
  font-size: .78rem;
  color: var(--muted);
}

/* ── Step 5: Errore ───────────────────────────────────────────────────── */
.error-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(194,96,96,.12);
  border: 1px solid var(--danger);
  color: var(--danger);
  font-size: 1.5rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: center;
}

.error-title {
  text-align: center;
  color: var(--danger);
  font-size: .9rem;
}

/* ── Footer ────────────────────────────────────────────────────────────── */
footer {
  text-align: center;
  font-size: .7rem;
  color: var(--muted);
  letter-spacing: .06em;
}

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 420px) {
  .card { padding: 1.75rem 1.25rem; }
  h1 { font-size: 2.8rem; }
  .input-row { flex-direction: column; }
  #btn-start-rec { align-self: stretch; justify-content: center; }
}