/* ==================== CSS カスタムプロパティ ==================== */
:root {
  --color-work: #f48fb1;
  --color-work-bg: #fce4ec;
  --color-slack: #ce93d8;
  --color-slack-bg: #f3e5f5;

  --color-text-primary: #5c3d5c;
  --color-text-secondary: #b08ab0;

  --bg-color: #fff5f8;
  --bg-overlay: rgba(255, 245, 248, 0.88);

  --font-main: 'Hiragino Maru Gothic ProN', 'M PLUS Rounded 1c',
               'Arial Rounded MT Bold', sans-serif;
  --radius-btn: 50px;
  --transition-phase: 0.5s ease;
}

/* ==================== リセット・ベース ==================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 100vh;
  overflow: hidden;
  color: var(--color-text-primary);
  transition: background-image var(--transition-phase);
}

/* ==================== 画面（フェーズ） ==================== */
.screen {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  background: var(--bg-overlay);
  backdrop-filter: blur(2px);
  animation: fadeIn 0.4s ease;
}

.screen.active { display: flex; }

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}

/* ==================== 待機画面 ==================== */
.app-title {
  font-size: clamp(1.4rem, 4vw, 2rem);
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: 10px;
  font-weight: bold;
}

.tagline {
  font-size: clamp(0.8rem, 2.5vw, 0.95rem);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: 48px;
  line-height: 1.6;
}

.start-button {
  background: linear-gradient(135deg, #f8b4c8 0%, #d4b8e0 100%);
  color: white;
  border: none;
  padding: 16px 64px;
  border-radius: var(--radius-btn);
  font-size: clamp(1rem, 3vw, 1.2rem);
  font-family: var(--font-main);
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 4px 24px rgba(244, 143, 177, 0.4);
  transition: transform 0.2s, box-shadow 0.2s;
  letter-spacing: 1px;
}

.start-button:hover {
  transform: scale(1.06);
  box-shadow: 0 6px 32px rgba(244, 143, 177, 0.55);
}

.start-button:active { transform: scale(0.97); }

/* ==================== タイマー画面 ==================== */
.cycle-indicator {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  letter-spacing: 3px;
  margin-bottom: 20px;
  text-transform: uppercase;
}

#timer-svg { display: block; overflow: visible; }

#ring-bg {
  stroke: var(--color-work-bg);
  transition: stroke var(--transition-phase);
}

#ring-fg {
  stroke: var(--color-work);
  transition: stroke-dashoffset 0.9s linear, stroke var(--transition-phase);
}

#timer-text {
  fill: var(--color-text-primary);
  font-family: var(--font-main);
}

#phase-text {
  fill: var(--color-text-secondary);
  font-family: var(--font-main);
}

/* ==================== 完了画面 ==================== */
.done-message {
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  text-align: center;
  color: var(--color-text-primary);
  margin-bottom: 48px;
  line-height: 1.7;
  white-space: pre-line;
}

/* ==================== 逃げるボタン ==================== */
.escape-button {
  position: fixed;
  left: 50%;
  top: 50%;
  background: linear-gradient(135deg, #d4b8e0 0%, #ffd6b0 100%);
  color: white;
  border: none;
  padding: 14px 44px;
  border-radius: var(--radius-btn);
  font-size: 1rem;
  font-family: var(--font-main);
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(206, 147, 216, 0.45);
  transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform: translate(-50%, -50%);
  z-index: 20;
  user-select: none;
}

.escape-button.hidden { display: none; }

/* ==================== 設定ボタン ==================== */
#settings-btn {
  position: fixed;
  top: 16px;
  right: 16px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(8px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 12px rgba(92, 61, 92, 0.15);
  color: var(--color-text-secondary);
  transition: transform 0.35s ease, background 0.2s;
  z-index: 50;
}

#settings-btn:hover {
  transform: rotate(60deg);
  background: rgba(255, 255, 255, 0.95);
}

/* ==================== 設定モーダル ==================== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(92, 61, 92, 0.35);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.25s ease;
}

.modal.hidden { display: none; }

.modal-content {
  background: #fff;
  border-radius: 28px;
  padding: 36px 32px;
  width: min(420px, 92vw);
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: 0 12px 48px rgba(92, 61, 92, 0.2);
}

.modal-title {
  font-size: 1.1rem;
  text-align: center;
  color: var(--color-text-primary);
  margin-bottom: 28px;
  font-weight: bold;
  letter-spacing: 2px;
}

.setting-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.setting-group label {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  letter-spacing: 1px;
}

.input-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.unit {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.setting-group input[type="number"],
.setting-group input[type="text"],
.setting-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid #f0dde8;
  border-radius: 12px;
  font-family: var(--font-main);
  font-size: 0.95rem;
  color: var(--color-text-primary);
  background: #fffafc;
  outline: none;
  transition: border-color 0.2s;
}

.setting-group input[type="number"] { width: 80px; }

.setting-group input:focus,
.setting-group select:focus {
  border-color: var(--color-work);
}

.setting-group input[type="file"] {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  padding: 8px 0;
}

.modal-actions {
  margin-top: 28px;
  display: flex;
  justify-content: center;
}

.primary-btn {
  background: linear-gradient(135deg, #f8b4c8 0%, #d4b8e0 100%);
  color: white;
  border: none;
  padding: 12px 48px;
  border-radius: var(--radius-btn);
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 3px 16px rgba(244, 143, 177, 0.35);
}

.primary-btn:hover { transform: scale(1.04); }

/* ==================== フェーズセレクター ==================== */
.phase-selector {
  display: flex;
  background: rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-btn);
  padding: 4px;
  gap: 0;
  margin-bottom: 28px;
  box-shadow: 0 2px 10px rgba(92, 61, 92, 0.1);
}

.phase-option {
  flex: 1;
  border: none;
  background: transparent;
  border-radius: var(--radius-btn);
  padding: 9px 22px;
  font-family: var(--font-main);
  font-size: clamp(0.82rem, 2.5vw, 0.92rem);
  font-weight: bold;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: background 0.22s ease, color 0.22s ease, box-shadow 0.22s ease;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.phase-option.active[data-phase="work"] {
  background: var(--color-work);
  color: #fff;
  box-shadow: 0 2px 10px rgba(244, 143, 177, 0.45);
}

.phase-option.active[data-phase="slack"] {
  background: var(--color-slack);
  color: #fff;
  box-shadow: 0 2px 10px rgba(206, 147, 216, 0.45);
}

.setting-group .phase-selector {
  margin-bottom: 0;
  background: #fffafc;
  box-shadow: none;
  border: 1.5px solid #f0dde8;
}

.setting-group .phase-option {
  padding: 8px 16px;
  font-size: 0.88rem;
}

/* ==================== レスポンシブ ==================== */
@media (max-width: 480px) {
  #timer-svg { width: 220px; height: 220px; }
  .modal-content { padding: 28px 20px; }
}