/* === 共用元件 START === */

/* --- 按鈕 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-dark));
  color: white;
  box-shadow: 0 2px 12px var(--brand-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--brand-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  border: var(--border-subtle);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-xs);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
  font-size: var(--fs-md);
}

/* --- 卡片 --- */
.card {
  background: var(--bg-secondary);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--duration-normal) var(--ease-out);
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* --- 維度進度條 --- */
.dimension-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.dimension-bar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-xs);
}

.dimension-bar__label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-secondary);
  font-weight: var(--fw-medium);
}

.dimension-bar__label .emoji {
  font-size: var(--fs-base);
}

.dimension-bar__value {
  font-family: var(--font-mono);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-xs);
  color: var(--text-primary);
  min-width: 28px;
  text-align: right;
}

.dimension-bar__track {
  width: 100%;
  height: 6px;
  background: var(--dim-bar-track);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.dimension-bar__fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease-out),
              background-color var(--duration-normal) var(--ease-out);
  position: relative;
}

.dimension-bar__fill::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  width: 12px;
  height: 100%;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.3);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.dimension-bar--positive .dimension-bar__fill {
  background: linear-gradient(90deg, var(--dim-positive), #6ee7b7);
}

.dimension-bar--negative .dimension-bar__fill {
  background: linear-gradient(90deg, var(--dim-negative), #fca5a5);
}

/* delta 浮動數字 */
.dimension-bar__delta {
  position: absolute;
  right: -4px;
  top: -20px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  pointer-events: none;
  animation: deltaFloat 1.2s var(--ease-out) forwards;
}

.dimension-bar__delta--up {
  color: var(--dim-increase);
}

.dimension-bar__delta--down {
  color: var(--dim-decrease);
}

/* --- 迷你曲線圖 --- */
.dimension-bar__sparkline {
  margin-top: 2px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  opacity: 0.85;
  transition: opacity var(--duration-fast);
}

.dimension-bar:hover .dimension-bar__sparkline {
  opacity: 1;
}

.sparkline-canvas {
  display: block;
  width: 100%;
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg-secondary);
  border: var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  max-width: 460px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  animation: scaleIn var(--duration-normal) var(--ease-spring);
}

.modal__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  margin-bottom: var(--space-2);
}

.modal__desc {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.5;
}

/* --- 輸入框 --- */
.input-field {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-tertiary);
  border: var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--fs-sm);
  transition: border-color var(--duration-fast);
}

.input-field:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px var(--brand-glow);
}

.input-field::placeholder {
  color: var(--text-muted);
}

/* --- 難度標記 --- */
.difficulty {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-size: var(--fs-xs);
}

.difficulty__star {
  color: var(--text-muted);
  font-size: 10px;
}

.difficulty__star--filled {
  color: var(--warning);
}

/* --- 分類標籤 --- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-3);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
}

.tag--social  { color: var(--cat-social); background: rgba(96, 165, 250, 0.1); }
.tag--work    { color: var(--cat-work);   background: rgba(167, 139, 250, 0.1); }
.tag--romance { color: var(--cat-romance); background: rgba(244, 114, 182, 0.1); }
.tag--challenge { color: var(--cat-challenge); background: rgba(248, 113, 113, 0.1); }

/* --- 打字指示器 --- */
.typing-indicator {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: var(--space-3) var(--space-4);
}

.typing-indicator__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: pulse 1.4s ease-in-out infinite;
}

.typing-indicator__dot:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator__dot:nth-child(3) { animation-delay: 0.4s; }

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-elevated);
  border: var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-6);
  font-size: var(--fs-sm);
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-toast);
  opacity: 0;
  transition: all var(--duration-normal) var(--ease-spring);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
/* --- 維度閃爍動畫 --- */
.dimension-bar.flash-positive {
  animation: flashGreen 0.6s ease-out;
}

.dimension-bar.flash-negative {
  animation: flashRed 0.6s ease-out;
}

@keyframes flashGreen {
  0%   { background: rgba(52, 211, 153, 0.15); }
  100% { background: transparent; }
}

@keyframes flashRed {
  0%   { background: rgba(248, 113, 113, 0.15); }
  100% { background: transparent; }
}
/* === 共用元件 END === */