/* ===== WHITE NOISE LAB PAGE ===== */

.noise-main {
  padding: 2rem 0 5rem;
}

/* ---- Master control ---- */
.noise-master {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.2rem 1.6rem;
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

.noise-master-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.5rem;
  border-radius: 100px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  font-weight: 400;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--transition), transform 0.15s;
  flex-shrink: 0;
}

.noise-master-btn:hover { background: #a090ff; transform: translateY(-1px); }
.noise-master-btn.active { background: var(--accent2); color: #000; }

.noise-master-icon { font-size: 0.9rem; }

.noise-master-vol {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.noise-vol-label {
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.noise-vol-val {
  font-size: 0.78rem;
  color: var(--muted);
  width: 2.5rem;
  text-align: right;
}

/* ---- Noise grid ---- */
.noise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem;
  margin-bottom: 3rem;
}

/* ---- Noise card ---- */
.noise-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.noise-card.playing {
  border-color: rgba(139, 124, 248, 0.4);
  box-shadow: var(--glow);
}

.noise-card__header {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  margin-bottom: 1.1rem;
}

.noise-card__icon { font-size: 1.6rem; flex-shrink: 0; margin-top: 0.1rem; }

.noise-card__name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.noise-card__desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}

.noise-toggle-btn {
  margin-left: auto;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--accent);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: background var(--transition), border-color var(--transition);
}

.noise-toggle-btn[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---- Slider ---- */
.noise-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--surface2);
  outline: none;
  cursor: pointer;
}

.noise-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg);
  box-shadow: 0 0 6px rgba(139,124,248,0.4);
}

.noise-card__controls {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.7rem;
}

.noise-val {
  font-size: 0.78rem;
  color: var(--muted);
  width: 2.5rem;
  text-align: right;
}

/* ---- Activity bar ---- */
.noise-card__bar {
  height: 3px;
  background: var(--surface2);
  border-radius: 2px;
  margin-bottom: 0.9rem;
  overflow: hidden;
}

.noise-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.1s;
}

/* ---- Tags ---- */
.noise-card__tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.noise-tag {
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  background: rgba(139,124,248,0.1);
  color: var(--accent);
  letter-spacing: 0.05em;
}

/* ---- Info section ---- */
.noise-info {
  margin-top: 1rem;
}

.noise-info h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 1.2rem;
}

.noise-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.noise-info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
  text-align: center;
}

.noise-info-icon { font-size: 1.8rem; display: block; margin-bottom: 0.5rem; }

.noise-info-card h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.noise-info-card p { font-size: 0.82rem; color: var(--muted); line-height: 1.55; }

@media (max-width: 600px) {
  .noise-master { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .noise-master-vol { width: 100%; }
}