/* ============================================
   高考估分系统 - H5 Base Styles
   ============================================ */
:root {
  --primary: #2563eb;
  --primary-light: #dbeafe;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --success-light: #dcfce7;
  --error: #dc2626;
  --error-light: #fee2e2;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --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;
  --font-size-body: 15px;
  --font-size-title: 20px;
  --font-size-small: 13px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 24px rgba(0,0,0,0.12);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  font-size: var(--font-size-body);
  line-height: 1.6;
  color: var(--gray-800);
  background: var(--gray-100);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  height: 100%;
}

#app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  background: var(--gray-50);
  position: relative;
  padding-bottom: 60px;
}

/* Footer Disclaimer */
.footer-disclaimer {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 480px;
  padding: 10px 16px;
  background: var(--gray-800);
  color: var(--gray-400);
  font-size: 12px;
  text-align: center;
  line-height: 1.4;
  z-index: 100;
}

/* Utility */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-error { color: var(--error); }
.text-warning { color: var(--warning); }
.text-gray { color: var(--gray-500); }
.text-sm { font-size: var(--font-size-small); }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.mt-3 { margin-top: 12px; }
.mb-3 { margin-bottom: 12px; }
.p-4 { padding: 16px; }

/* Spinner */
@keyframes spin {
  to { transform: rotate(360deg); }
}
.spinner {
  display: inline-block;
  width: 32px;
  height: 32px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

/* Fade transition */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in {
  animation: fadeIn 0.3s ease forwards;
}