/* 
 * Ninniler & Biyo-Akustik Frekans Mimarisi
 * Gece ve Bebek Odası Uyumlu Tema (OLED Dark & Soothing Warm Amber/Lavender)
 */

:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #131b2e;
  --bg-card: rgba(26, 36, 61, 0.7);
  --bg-card-hover: rgba(35, 48, 80, 0.85);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-amber: #f59e0b;
  --accent-purple: #8b5cf6;
  --accent-teal: #14b8a6;
  --accent-pink: #ec4899;
  --accent-red: #ef4444;
  --border-color: rgba(255, 255, 255, 0.08);
  --glow-amber: rgba(245, 158, 11, 0.25);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-sans);
  background: radial-gradient(circle at 50% 0%, #1e1b4b 0%, var(--bg-primary) 70%);
  color: var(--text-primary);
  min-height: 100vh;
  padding-bottom: 240px; /* Alt mikser için boşluk */
  overflow-x: hidden;
}

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 16px 20px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0 20px;
  border-bottom: 1px solid var(--border-color);
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #4f46e5, #ec4899);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: 0 4px 14px rgba(236, 72, 153, 0.3);
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  background: linear-gradient(to right, #ffffff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--accent-amber);
  display: flex;
  align-items: center;
  gap: 6px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.icon-btn:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

.icon-btn.lock-active {
  background: #7f1d1d;
  border-color: #ef4444;
  color: #fecaca;
  animation: pulse 2s infinite;
}

/* Profil & Yaş Kartı */
.profile-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  margin-top: 18px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.profile-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 14px;
}

@media (max-width: 500px) {
  .profile-grid {
    grid-template-columns: 1fr;
  }
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-group label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input-group input[type="text"],
.input-group input[type="date"] {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.input-group input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(1);
  cursor: pointer;
}

.input-group input:focus {
  border-color: var(--accent-purple);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
  margin-top: 4px;
}

.checkbox-row input {
  accent-color: var(--accent-purple);
  width: 16px;
  height: 16px;
}

/* Yaş Teşhis & Bilimsel Evre Kutusu */
.stage-banner {
  background: linear-gradient(135deg, rgba(30, 27, 75, 0.9), rgba(19, 27, 46, 0.9));
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-top: 10px;
}

.stage-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.stage-badge {
  background: rgba(139, 92, 246, 0.25);
  color: #c4b5fd;
  border: 1px solid rgba(139, 92, 246, 0.4);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.age-display-text {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
}

.stage-title-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-amber);
  margin-bottom: 4px;
}

.stage-specs-text {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.science-pill-btn {
  background: transparent;
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--accent-amber);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 8px;
  transition: all 0.2s;
}

.science-pill-btn:hover {
  background: rgba(245, 158, 11, 0.15);
}

/* Güvenlik & Kulaklık Uyarısı */
.alert-box {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-top: 14px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.alert-box.warning {
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.4);
}

.alert-icon {
  font-size: 22px;
  flex-shrink: 0;
}

.alert-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: #fca5a5;
  margin-bottom: 3px;
}

.alert-box.warning .alert-title {
  color: #fcd34d;
}

.alert-body {
  font-size: 0.78rem;
  color: #e2e8f0;
  line-height: 1.4;
}

/* Kategori Sekmeleri */
.category-tabs {
  display: flex;
  gap: 8px;
  margin: 22px 0 16px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.category-tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tab-btn.active {
  background: #4f46e5;
  border-color: #6366f1;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
}

.tab-btn.disabled {
  opacity: 0.45;
  cursor: not-allowed;
  border-style: dashed;
}

/* Parça Kataloğu */
.catalog-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.track-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  transition: all 0.2s ease;
}

.track-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.track-card.active-a {
  border-color: #8b5cf6;
  background: rgba(139, 92, 246, 0.15);
}

.track-card.active-b {
  border-color: #14b8a6;
  background: rgba(20, 184, 166, 0.15);
}

.track-left {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 0;
}

.track-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  border: 1px solid var(--border-color);
}

.track-info {
  flex: 1;
  min-width: 0;
}

.track-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 3px;
}

.track-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.track-tag {
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text-secondary);
}

.track-freq-badge {
  background: rgba(20, 184, 166, 0.15);
  color: #5eead4;
  border: 1px solid rgba(20, 184, 166, 0.3);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.7rem;
}

.track-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.play-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: #4f46e5;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 16px;
  transition: transform 0.15s, background 0.15s;
}

.play-btn:hover {
  background: #6366f1;
  transform: scale(1.06);
}

.play-btn.freq-type {
  background: #0d9488;
}

.play-btn.freq-type:hover {
  background: #14b8a6;
}

.info-circle-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 17px;
  padding: 6px;
  transition: color 0.15s;
}

.info-circle-btn:hover {
  color: var(--accent-amber);
}

/* =======================================================
   STICKY ÇİFT KANALLI SES MOTORU (DUAL-ENGINE MIXER)
   ======================================================= */
.dual-mixer-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(11, 15, 25, 0.94);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  padding: 12px 20px 16px;
  z-index: 100;
  box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.5);
}

.mixer-inner {
  max-width: 680px;
  margin: 0 auto;
}

.mixer-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.mixer-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.ducking-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 3px 8px;
  border-radius: 12px;
  opacity: 0;
  transform: translateY(-2px);
  transition: all 0.25s ease;
}

.ducking-indicator.active {
  opacity: 1;
  transform: translateY(0);
}

.mixer-channels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 540px) {
  .mixer-channels {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

.channel-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.channel-box.chan-a {
  border-left: 3px solid #8b5cf6;
}

.channel-box.chan-b {
  border-left: 3px solid #14b8a6;
}

.chan-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chan-tag {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  color: #c4b5fd;
}

.chan-b .chan-tag {
  color: #5eead4;
}

.chan-now-playing {
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 170px;
}

.chan-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.chan-mini-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: #ffffff;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

.volume-slider {
  flex: 1;
  height: 5px;
  accent-color: #8b5cf6;
  cursor: pointer;
}

.chan-b .volume-slider {
  accent-color: #14b8a6;
}

/* Zamanlayıcı Barı */
.timer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.76rem;
}

.timer-chips {
  display: flex;
  gap: 6px;
}

.chip-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.72rem;
  cursor: pointer;
  transition: all 0.15s;
}

.chip-btn:hover, .chip-btn.active {
  background: rgba(245, 158, 11, 0.2);
  border-color: var(--accent-amber);
  color: #fbbf24;
}

.timer-countdown {
  font-weight: 700;
  color: var(--accent-amber);
  display: flex;
  align-items: center;
  gap: 5px;
}

.fadeout-badge {
  background: rgba(236, 72, 153, 0.2);
  color: #f472b6;
  border: 1px solid rgba(236, 72, 153, 0.4);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.68rem;
  animation: pulse 1.5s infinite;
}

/* =======================================================
   BEBEK KİLİT MODU (TODDLER LOCK OVERLAY)
   ======================================================= */
.toddler-lock-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(3, 7, 18, 0.85);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  user-select: none;
  touch-action: none;
}

.lock-shield-icon {
  font-size: 64px;
  color: #f59e0b;
  animation: float 3s ease-in-out infinite;
}

.lock-instruction {
  text-align: center;
  max-width: 320px;
}

.lock-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
}

.lock-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.unlock-hold-btn {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, #3b0764, #1e1b4b);
  border: 3px solid rgba(168, 85, 247, 0.4);
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.3);
  transition: transform 0.1s;
}

.unlock-hold-btn:active {
  transform: scale(0.96);
}

.hold-progress-fill {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 0%;
  background: linear-gradient(to top, rgba(236, 72, 153, 0.8), rgba(168, 85, 247, 0.8));
  transition: height 0.05s linear;
  z-index: 1;
}

.unlock-hold-btn span {
  position: relative;
  z-index: 2;
}

/* =======================================================
   MODALLAR
   ======================================================= */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 100%;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.modal-backdrop.open .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
}

.close-modal-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 22px;
  cursor: pointer;
}

.modal-body {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.science-callout {
  background: rgba(139, 92, 246, 0.12);
  border-left: 3px solid var(--accent-purple);
  padding: 12px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 14px 0;
  font-size: 0.82rem;
  color: #ddd6fe;
}

/* Animasyonlar */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}