/* FlashLingo — Dark Theme for Bedtime Learning */

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

:root {
  --bg: #1a1a22;
  --surface: #14141e;
  --surface2: #1e1e2e;
  --text: #e8e8f0;
  --text-dim: #888899;
  --accent: #4a9eff;
  --green: #34d399;
  --radius: 16px;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  max-width: 420px;
  margin: 0 auto;
  position: relative;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

/* Screen system */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.screen.active {
  opacity: 1;
  pointer-events: auto;
}

/* Splash */
.splash-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 32px;
}

.splash-icon {
  font-size: 64px;
  margin-bottom: 8px;
}

.splash-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
}

.splash-sub {
  color: var(--text-dim);
  font-size: 15px;
}

/* Buttons */
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 14px 48px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 24px;
  transition: opacity 0.2s;
}

.btn-primary:active {
  opacity: 0.7;
}

/* Day Select */
.screen-inner {
  flex: 1;
  overflow-y: auto;
  padding: 60px 20px 40px;
  -webkit-overflow-scrolling: touch;
}

.screen-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
  text-align: center;
}

.day-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.day-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: transform 0.15s, background 0.15s;
  position: relative;
  overflow: hidden;
}

.day-card:active {
  transform: scale(0.97);
  background: var(--surface2);
}

.day-card-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

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

.day-card-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.day-card-check {
  font-size: 18px;
  color: var(--green);
}

.day-card-theme {
  font-size: 18px;
  font-weight: 700;
}

.day-card-theme-ja {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 2px;
}

/* Player */
.player-header {
  padding: 16px 20px 8px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.player-day {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.progress-bar {
  height: 3px;
  background: var(--surface2);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  width: 0%;
  transition: width 0.3s ease;
}

.cycle-dots {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.cycle-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--surface2);
  transition: background 0.3s;
}

.cycle-dot.done {
  background: var(--accent);
}

.cycle-dot.current {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.cycle-dot.fast {
  border-radius: 3px;
  width: 10px;
  height: 10px;
}

.cycle-dot.no-ja {
  border: 1.5px solid var(--text-dim);
  background: transparent;
}

.cycle-dot.no-ja.done {
  border-color: var(--accent);
  background: transparent;
}

.cycle-dot.no-ja.current {
  border-color: var(--accent);
  background: transparent;
  box-shadow: 0 0 8px var(--accent);
}

/* Card */
.player-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  cursor: pointer;
}

.card {
  text-align: center;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.card.visible {
  opacity: 1;
}

.card-emoji {
  font-size: 96px;
  line-height: 1.1;
  margin-bottom: 24px;
  filter: drop-shadow(0 0 24px rgba(255,255,255,0.08));
}

.card-en {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.card-ja {
  font-size: 20px;
  color: #999;
}

.pause-hint {
  text-align: center;
  padding: 12px;
  font-size: 12px;
  color: var(--text-dim);
  opacity: 0.6;
}

/* Paused overlay */
.player-body.paused::after {
  content: '⏸ 一時停止中';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 15, 0.7);
  font-size: 20px;
  font-weight: 600;
  color: var(--text-dim);
  backdrop-filter: blur(4px);
}

.player-body {
  position: relative;
}

/* Cycle Break */
.cycle-break-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.cycle-number {
  font-size: 72px;
  font-weight: 800;
  color: var(--accent);
}

.cycle-label {
  font-size: 20px;
  color: var(--text-dim);
}

.cycle-mode {
  font-size: 16px;
  font-weight: 600;
  margin-top: 8px;
  color: var(--accent);
}

/* Complete */
.complete-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 32px;
}

.complete-icon {
  font-size: 64px;
}

.complete-title {
  font-size: 28px;
  font-weight: 800;
}

.complete-msg {
  color: var(--text-dim);
  font-size: 15px;
  text-align: center;
}

/* Env safe area */
@supports (padding-top: env(safe-area-inset-top)) {
  .player-header {
    padding-top: calc(16px + env(safe-area-inset-top));
  }
  .screen-inner {
    padding-top: calc(60px + env(safe-area-inset-top));
  }
}