/* Reset & Core variables */
:root {
  /* Common variables */
  --font-ui: 'Outfit', 'Noto Sans JP', sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-highlight: rgba(255, 255, 255, 0.12);
  --glow-radius: 15px;

  /* Theme-specific variables (Default: Wood theme) */
  --bg-color: #07080b;
  --ambient-color: rgba(217, 119, 6, 0.12); /* Warm gold amber */
  --frame-bg: linear-gradient(135deg, #2b1f1d 0%, #1c1211 50%, #120908 100%); /* Walnut wood grain */
  --frame-border: #422d2b;
  --frame-inset: #d97706; /* Golden brass rim */
  --accent-color: #fbbf24;
  --accent-glow: rgba(251, 191, 36, 0.4);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --logo-color: #fbbf24;
}

/* Blue theme override */
[data-theme="blue"] {
  --bg-color: #030712;
  --ambient-color: rgba(6, 182, 212, 0.15); /* Cyber Cyan */
  --frame-bg: linear-gradient(135deg, #0f172a 0%, #0c1220 50%, #030712 100%); /* Sleek matte dark navy */
  --frame-border: #1e293b;
  --frame-inset: #06b6d4; /* Cyan glowing rim */
  --accent-color: #06b6d4;
  --accent-glow: rgba(6, 182, 212, 0.5);
  --text-primary: #f3f4f6;
  --text-secondary: #6b7280;
  --logo-color: #06b6d4;
}

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

body {
  font-family: var(--font-ui);
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  overflow-x: hidden;
  transition: background-color 0.5s ease;
  position: relative;
}

/* Background Ambient Glow */
.ambient-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80vw;
  height: 80vw;
  max-width: 600px;
  max-height: 600px;
  background: radial-gradient(circle, var(--ambient-color) 0%, rgba(0,0,0,0) 70%);
  z-index: 0;
  pointer-events: none;
  transition: background 0.5s ease;
}

/* App Container */
.app-container {
  width: 100%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 1rem;
  z-index: 1;
  flex: 1;
  justify-content: center;
}

/* Header */
.app-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding: 0 0.5rem;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--logo-color);
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  transition: var(--transition-smooth);
}

.pwa-badge {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  color: var(--accent-color);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* Main Clock Section */
.clock-section {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

/* Clock Frame Outer - Resembles classic retro-square TV bezel */
.clock-frame-outer {
  width: 85vw;
  height: 85vw;
  max-width: 380px;
  max-height: 380px;
  background: var(--frame-bg);
  border: 6px solid var(--frame-border);
  border-radius: 40px; /* Squircle appearance */
  padding: 18px;
  box-shadow: 
    0 20px 40px rgba(0, 0, 0, 0.6),
    inset 0 2px 5px rgba(255, 255, 255, 0.1),
    inset 0 -2px 10px rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  transition: var(--transition-smooth);
}

.clock-frame-outer::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 8px;
  right: 8px;
  bottom: 8px;
  border: 2px solid var(--frame-inset);
  border-radius: 32px;
  pointer-events: none;
  opacity: 0.65;
  transition: var(--transition-smooth);
}

[data-theme="blue"] .clock-frame-outer {
  box-shadow: 
    0 0 25px rgba(6, 182, 212, 0.2),
    0 20px 45px rgba(0, 0, 0, 0.7),
    inset 0 2px 5px rgba(255, 255, 255, 0.05);
}

.clock-frame-inner {
  width: 100%;
  height: 100%;
  border-radius: 24px;
  overflow: hidden;
  background: transparent;
  display: flex;
  justify-content: center;
  align-items: center;
}

#clockCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Digital Helper Display */
.digital-time-display {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  letter-spacing: 0.15em;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 0.4rem 1.2rem;
  border-radius: 12px;
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.02);
  text-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
}

/* Action Dock (Floating toolbar) */
.action-dock {
  width: 100%;
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 2rem;
  padding: 0 0.5rem;
}

.dock-btn {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  flex: 1;
  max-width: 110px;
  transition: var(--transition-smooth);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.dock-btn:hover {
  background: var(--glass-highlight);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.dock-btn:active {
  transform: translateY(1px);
}

button:focus-visible,
input[type="range"]:focus-visible {
  outline: 3px solid var(--accent-color);
  outline-offset: 3px;
}

.dock-btn .icon {
  width: 1.1rem;
  height: 1.1rem;
  color: var(--accent-color);
  filter: drop-shadow(0 0 4px var(--accent-glow));
  transition: var(--transition-smooth);
}

.install-btn {
  background: rgba(251, 191, 36, 0.06);
  border-color: rgba(251, 191, 36, 0.2);
}

.install-btn:hover {
  background: rgba(251, 191, 36, 0.12);
  border-color: rgba(251, 191, 36, 0.4);
}

/* Slide-up Settings Modal */
.settings-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 10;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.settings-content {
  width: 100%;
  max-width: 500px;
  background: #0f121a;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 28px 28px 0 0;
  padding: 1.5rem;
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.5);
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.settings-modal.open .settings-content {
  transform: translateY(0);
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 0.75rem;
}

.settings-header h2 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.close-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.2rem;
  border-radius: 50%;
  transition: var(--transition-smooth);
}

.close-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.close-btn .icon {
  width: 1.25rem;
  height: 1.25rem;
}

/* Settings Items */
.settings-body {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-height: 70vh;
  overflow-y: auto;
  padding-bottom: env(safe-area-inset-bottom);
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.setting-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
}

.setting-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.setting-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Custom Segmented Buttons for Theme Selector */
.theme-select-group {
  display: flex;
  background: rgba(0, 0, 0, 0.3);
  padding: 0.2rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.theme-btn {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.theme-btn.active {
  color: #07080b;
  background: var(--accent-color);
  font-weight: 600;
}

/* Switch styling */
.switch-control {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch-control input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  transition: .3s;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.switch-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: #ffffff;
  transition: .3s;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.switch-control input:checked + .switch-slider {
  background-color: var(--accent-color);
}

.switch-control input:checked + .switch-slider:before {
  transform: translateX(20px);
}

.switch-control input:focus-visible + .switch-slider {
  outline: 3px solid var(--accent-color);
  outline-offset: 3px;
}

/* Volume Slider styling */
.volume-control-item {
  flex-direction: column;
  align-items: stretch;
  gap: 0.75rem;
}

.range-container {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.range-icon {
  width: 1.1rem;
  height: 1.1rem;
  color: var(--text-secondary);
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent-color);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 5px var(--accent-glow);
  transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

#volumeValue {
  font-size: 0.75rem;
  font-weight: 500;
  width: 32px;
  text-align: right;
  color: var(--text-secondary);
}

/* iOS tips section */
.ios-install-guide {
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: 14px;
  padding: 0.85rem;
  margin-top: 0.5rem;
}

.ios-install-guide h3 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-color);
  margin-bottom: 0.35rem;
}

.ios-install-guide p {
  font-size: 0.7rem;
  line-height: 1.4;
  color: var(--text-secondary);
}

.inline-icon {
  display: inline;
  width: 13px;
  height: 13px;
  vertical-align: text-bottom;
}

/* Footer styling */
.app-footer {
  width: 100%;
  text-align: center;
  padding: 1.5rem;
  font-size: 0.65rem;
  color: var(--text-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.02);
  letter-spacing: 0.05em;
  opacity: 0.7;
  z-index: 1;
}

/* Custom Scrollbar for settings */
.settings-body::-webkit-scrollbar {
  width: 4px;
}

.settings-body::-webkit-scrollbar-track {
  background: transparent;
}

.settings-body::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
}

/* Responsiveness overrides */
@media (min-width: 640px) {
  .app-container {
    padding: 2.5rem 1.5rem;
  }
  
  .clock-frame-outer {
    max-width: 400px;
    max-height: 400px;
    border-width: 8px;
    padding: 20px;
  }
  
  .settings-content {
    border-radius: 24px;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
  }
}

/* Center Dialog Modal style for Startup PWA Prompt */
.dialog-modal {
  align-items: center !important;
  background: rgba(0, 0, 0, 0.65) !important;
}

.dialog-modal .settings-content {
  transform: scale(0.85) !important;
  border-radius: 24px !important;
  max-width: 400px !important;
  margin: 1.5rem !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
}

.dialog-modal.open .settings-content {
  transform: scale(1) !important;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}