/* 小小诗人 - 统一设计系统 */

/* ============================================
   设计令牌
   ============================================ */

:root {
  /* 主色调 - 翡翠绿 */
  --color-primary-50: #ecfdf5;
  --color-primary-100: #d1fae5;
  --color-primary-200: #a7f3d0;
  --color-primary-300: #6ee7b7;
  --color-primary-400: #34d399;
  --color-primary-500: #10b981;
  --color-primary-600: #059669;
  --color-primary-700: #047857;
  --color-primary-800: #065f46;
  --color-primary-900: #064e3b;

  /* 石墨色 - 背景 */
  --color-stone-50: #fafaf9;
  --color-stone-100: #f5f5f4;
  --color-stone-200: #e7e5e4;
  --color-stone-300: #d6d3d1;
  --color-stone-400: #a8a29e;
  --color-stone-500: #78716c;
  --color-stone-600: #57534e;
  --color-stone-700: #44403c;
  --color-stone-800: #292524;
  --color-stone-900: #1c1917;

  /* 功能色 */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;

  /* 背景色 */
  --bg-paper: #fdfbf7;
  --bg-card: #ffffff;
  --bg-overlay: rgba(0, 0, 0, 0.5);

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'Songti SC', 'STSong', 'SimSun', serif;
  --font-hand: 'Ma Shan Zheng', 'ZCOOL XiaoWei', 'Long Cang', 'STKaiti', 'KaiTi', cursive;
  --font-sans: system-ui, -apple-system, sans-serif;

  /* 圆角 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;

  /* 间距 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
}

/* ============================================
   基础样式
   ============================================ */

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

.font-classic {
  font-family: var(--font-serif);
}

.font-hand {
  font-family: var(--font-hand);
}

/* ============================================
   卡片组件
   ============================================ */

.card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-stone-100);
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-stone-100);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-stone-100);
}

/* ============================================
   按钮组件
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  outline: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 主要按钮 */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* 次要按钮 */
.btn-secondary {
  background: var(--color-stone-100);
  color: var(--color-stone-600);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-stone-200);
}

/* 胶囊按钮 */
.btn-pill {
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
}

.btn-pill-active {
  background: var(--color-primary-600);
  color: white;
}

.btn-pill-inactive {
  background: var(--color-stone-100);
  color: var(--color-stone-600);
}

.btn-pill-inactive:hover:not(:disabled) {
  background: var(--color-primary-50);
  color: var(--color-primary-600);
}

/* 功能按钮颜色 */
.btn-amber {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: white;
}

.btn-blue {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: white;
}

.btn-indigo {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: white;
}

.btn-teal {
  background: linear-gradient(135deg, #14b8a6, #0d9488);
  color: white;
}

.btn-rose {
  background: linear-gradient(135deg, #f43f5e, #e11d48);
  color: white;
}

.btn-purple {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
  color: white;
}

.btn-cyan {
  background: linear-gradient(135deg, #06b6d4, #0891b2);
  color: white;
}

.btn-emerald {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
}

.btn-pink {
  background: linear-gradient(135deg, #ec4899, #db2777);
  color: white;
}

/* ============================================
   信息面板
   ============================================ */

.info-panel {
  padding: var(--spacing-md);
  border-radius: var(--radius-xl);
  border: 1px solid;
}

.info-panel-blue {
  background: #eff6ff;
  border-color: #bfdbfe;
}

.info-panel-blue h4 {
  color: #1e40af;
}

.info-panel-blue p {
  color: #1d4ed8;
}

.info-panel-indigo {
  background: #eef2ff;
  border-color: #c7d2fe;
}

.info-panel-indigo h4 {
  color: #3730a3;
}

.info-panel-indigo p {
  color: #4338ca;
}

.info-panel-teal {
  background: #f0fdfa;
  border-color: #99f6e4;
}

.info-panel-teal h4 {
  color: #0f766e;
}

.info-panel-teal p {
  color: #0d9488;
}

.info-panel-rose {
  background: #fff1f2;
  border-color: #fecdd3;
}

.info-panel-rose h4 {
  color: #9f1239;
}

.info-panel-rose p {
  color: #be123c;
}

.info-panel-amber {
  background: #fffbeb;
  border-color: #fde68a;
}

.info-panel-amber h4 {
  color: #92400e;
}

.info-panel-amber p {
  color: #b45309;
}

.info-panel-purple {
  background: #faf5ff;
  border-color: #e9d5ff;
}

.info-panel-purple h4 {
  color: #6b21a8;
}

.info-panel-purple p {
  color: #7c3aed;
}

.info-panel-cyan {
  background: #ecfeff;
  border-color: #a5f3fc;
}

.info-panel-cyan h4 {
  color: #0e7490;
}

.info-panel-cyan p {
  color: #0891b2;
}

/* ============================================
   标签组件
   ============================================ */

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  font-size: 0.625rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid;
}

.tag-success {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  border-color: var(--color-primary-200);
}

.tag-warning {
  background: #fef3c7;
  color: #92400e;
  border-color: #fde68a;
}

.tag-error {
  background: #fee2e2;
  color: #991b1b;
  border-color: #fecaca;
}

.tag-info {
  background: #dbeafe;
  color: #1e40af;
  border-color: #bfdbfe;
}

/* ============================================
   进度条
   ============================================ */

.progress-bar {
  height: 0.5rem;
  background: var(--color-stone-100);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-bar-success .progress-bar-fill {
  background: linear-gradient(90deg, var(--color-primary-400), var(--color-primary-500));
}

.progress-bar-warning .progress-bar-fill {
  background: linear-gradient(90deg, #fbbf24, #f59e0b);
}

.progress-bar-error .progress-bar-fill {
  background: linear-gradient(90deg, #f87171, #ef4444);
}

/* ============================================
   动画
   ============================================ */

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse-soft {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

@keyframes bounce-soft {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

.animate-fade-in {
  animation: fade-in 0.3s ease-out;
}

.animate-slide-up {
  animation: slide-up 0.4s ease-out;
}

.animate-pulse-soft {
  animation: pulse-soft 2s ease-in-out infinite;
}

.animate-bounce-soft {
  animation: bounce-soft 2s ease-in-out infinite;
}

/* ============================================
   输入框
   ============================================ */

.input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  border: 1px solid var(--color-stone-300);
  border-radius: var(--radius-lg);
  background: white;
  transition: all var(--transition-fast);
  outline: none;
}

.input:focus {
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.input::placeholder {
  color: var(--color-stone-400);
}

/* ============================================
   分隔线
   ============================================ */

.divider {
  height: 1px;
  background: var(--color-stone-200);
  margin: var(--spacing-md) 0;
}

/* ============================================
   诗歌卡片特殊样式
   ============================================ */

.poem-card {
  background: linear-gradient(135deg, #ffffff 0%, #fdfbf7 100%);
  border-left: 4px solid var(--color-primary-600);
}

.poem-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-stone-800);
}

.poem-author {
  font-size: 0.875rem;
  color: var(--color-stone-500);
}

.poem-content {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 2;
  color: var(--color-stone-700);
}

.poem-line {
  display: block;
  text-align: center;
}

.poem-line-hidden {
  color: transparent;
  background: var(--color-stone-200);
  border-radius: var(--radius-sm);
  user-select: none;
}

/* ============================================
   导航栏
   ============================================ */

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.5rem;
  transition: all var(--transition-fast);
}

.nav-item-active {
  color: var(--color-primary-700);
  font-weight: 700;
}

.nav-item-inactive {
  color: var(--color-stone-500);
}

.nav-item-inactive:hover {
  color: var(--color-primary-600);
}

/* ============================================
   工具提示
   ============================================ */

.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  background: var(--color-stone-800);
  color: white;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.tooltip:hover::after {
  opacity: 1;
}

/* ============================================
   响应式调整
   ============================================ */

@media (max-width: 640px) {
  .poem-title {
    font-size: 1.25rem;
  }

  .poem-content {
    font-size: 1rem;
  }
}

/* ============================================
   滚动条样式
   ============================================ */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-stone-100);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--color-stone-300);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-stone-400);
}

.scrollbar-hide {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.scrollbar-hide::-webkit-scrollbar {
  display: none;
}

/* ============================================
   选择高亮
   ============================================ */

::selection {
  background: var(--color-primary-200);
  color: var(--color-primary-900);
}