/* 主样式文件 - Bra Size Calculator */

/* 基础变量 */
:root {
  --primary: #D83A56;
  --secondary: #FF616D;
  --tertiary: #FFD8CC;
  --dark: #2D2A32;
  --light: #F9F9F9;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
}

/* 基础重置 */
* {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background-color: var(--light);
  margin: 0;
  padding: 0;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .container {
    padding: 0 1.5rem;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }
}

/* 颜色类 */
.bg-primary { background-color: var(--primary); }
.bg-secondary { background-color: var(--secondary); }
.bg-tertiary { background-color: var(--tertiary); }
.bg-dark { background-color: var(--dark); }
.bg-light { background-color: var(--light); }

.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-dark { color: var(--dark); }
.text-light { color: var(--light); }

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: 0.5rem;
  text-decoration: none;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background-color: #c0324a;
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(216, 58, 86, 0.3);
}

.btn-secondary {
  background-color: var(--secondary);
  color: white;
}

.btn-secondary:hover {
  background-color: #e55a66;
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background-color: var(--primary);
  color: white;
}

/* 表单样式 */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--gray-700);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: 0.5rem;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(216, 58, 86, 0.1);
}

.form-input.error {
  border-color: #ef4444;
}

.form-error {
  color: #ef4444;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

/* 卡片样式 */
.card {
  background-color: white;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  overflow: hidden;
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--gray-200);
  background-color: var(--gray-50);
}

/* 加载状态 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--gray-200);
  border-radius: 50%;
  border-top-color: var(--primary);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 工具提示 */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltip-text {
  visibility: hidden;
  width: 200px;
  background-color: var(--gray-800);
  color: white;
  text-align: center;
  border-radius: 0.5rem;
  padding: 0.5rem;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  margin-left: -100px;
  opacity: 0;
  transition: opacity 0.3s;
  font-size: 0.875rem;
}

.tooltip:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}

/* 响应式网格 */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 768px) {
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
}

/* 动画 */
.fade-in {
  animation: fadeIn 0.5s ease-in;
}

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

.slide-up {
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

/* 打印样式 */
@media print {
  .no-print { display: none !important; }
  
  body {
    background: white;
    color: black;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
  :root {
    --primary: #000000;
    --secondary: #000000;
    --dark: #000000;
    --light: #ffffff;
  }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
  :root {
    --light: #1a1a1a;
    --dark: #ffffff;
    --gray-50: #2d2d2d;
    --gray-100: #404040;
    --gray-200: #525252;
    --gray-300: #666666;
    --gray-400: #808080;
    --gray-500: #999999;
    --gray-600: #b3b3b3;
    --gray-700: #cccccc;
    --gray-800: #e6e6e6;
    --gray-900: #ffffff;
  }
  
  body {
    background-color: var(--light);
    color: var(--dark);
  }
  
  .card {
    background-color: var(--gray-100);
  }
}