/* ============================================
   酒泉高分中心 - 基础样式与变量定义
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* CSS Variables - 浅色主题（默认） */
:root, html:not(.dark) {
  /* 色彩系统 */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --surface: rgba(255, 255, 255, 0.8);
  --accent: #28e3a0;
  --accent-dim: rgba(48, 227, 160, 0.15);
  --accent-glow: rgba(40, 227, 160, 0.4);
  --text-pri: #edf7f4;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;
  --border-subtle: rgba(148, 163, 184, 0.15);
  --border-medium: rgba(148, 163, 184, 0.25);
  --border-accent: rgba(8, 145, 178, 0.4);
  --danger: #dc2626;
  --warning: #d97706;
  --info: #0891b2;

  /* 玻璃拟态 - 浅色主题 */
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-bg-hover: rgba(255, 255, 255, 0.95);
  --glass-blur: blur(12px) saturate(180%);
  --glass-border: 1px solid rgba(148, 163, 184, 0.2);
  --glass-glow: inset 0 0 20px rgba(8, 145, 178, 0.03);

  /* 排版 */
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', 'Courier New', monospace;

  /* 间距 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;

  /* 布局 */
  --content-max-width: 1240px;
  --nav-height: 72px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
  --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 深色主题变量 */
html.dark {
  /* 色彩系统 */
  --bg-primary: #050f1f;
  --bg-secondary: #0a1b36;
  --surface: rgba(16, 40, 80, 0.6);
  --accent: #28e3a0;
  --accent-dim: rgba(40, 227, 160, 0.15);
  --accent-glow: rgba(40, 227, 160, 0.4);
  --text-primary: #e6f1ff;
  --text-secondary: #8fa3bf;
  --text-tertiary: #5a7399;
  --border-subtle: rgba(230, 241, 255, 0.08);
  --border-medium: rgba(230, 241, 255, 0.12);
  --border-accent: rgba(40, 227, 160, 0.3);
  --danger: #ff6b6b;
  --warning: #ffd166;
  --info: #118ab2;

  /* 玻璃拟态 */
  --glass-bg: rgba(10, 27, 54, 0.4);
  --glass-bg-hover: rgba(16, 40, 80, 0.55);
  --glass-blur: blur(12px) saturate(180%);
  --glass-border: 1px solid rgba(230, 241, 255, 0.1);
  --glass-glow: inset 0 0 20px rgba(40, 227, 160, 0.05);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Selection */
::selection {
  background: var(--accent-dim);
  color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: rgba(143, 163, 191, 0.3);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(143, 163, 191, 0.5);
}

/* Links */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: #0ea5c7;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Utility Classes */
.container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
}

.section {
  padding: 0 0 var(--space-2xl) 0;
}
@media (max-width: 768px) {
  .section {
    padding: var(--space-3xl) 0;
  }
}

.section-alt {
  background-color: var(--bg-secondary);
}

.pad30 {
  padding: 30px 0;
}

/* Typography */
.heading-1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.heading-2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.heading-3 {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

.body-text {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.caption {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-tertiary);
}

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

/* Glass Panel */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}
.glass-panel:hover {
  background: var(--glass-bg-hover);
  border-color: var(--border-accent);
}

/* Card */
.card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: 0 8px 24px rgba(8, 145, 178, 0.1);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 10px 24px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
}
.btn-primary:hover:not(:disabled) {
  box-shadow: 0 4px 16px rgba(8, 145, 178, 0.3);
  transform: translateY(-1px);
  color:#fff;
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border-accent);
}
.btn-outline:hover:not(:disabled) {
  background: var(--accent-dim);
  border-color: var(--accent);
    color:#fff;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}
.btn-ghost:hover:not(:disabled) {
  color: var(--text-primary);
  background: rgba(8, 145, 178, 0.08);
}

/* Border Revealing Button */
.btn-glow {
  position: relative;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}
.btn-glow::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
}
.btn-glow:hover::before {
  opacity: 1;
  animation: borderGlow 2s linear infinite;
}
.btn-glow:hover {
  color: var(--accent);
}
@keyframes borderGlow {
  0% { filter: hue-rotate(0deg); }
  100% { filter: hue-rotate(0deg); }
}

/* Tags */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  font-size: 0.75rem;
  font-weight: 500;
  font-family: var(--font-mono);
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
}

.tag-accent {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--border-accent);
}

.tag-blue {
  background: rgba(8, 145, 178, 0.1);
  color: #0891b2;
  border: 1px solid rgba(8, 145, 178, 0.2);
}

.tag-orange {
  background: rgba(217, 119, 6, 0.1);
  color: var(--warning);
  border: 1px solid rgba(217, 119, 6, 0.2);
}

.tag-red {
  background: rgba(220, 38, 38, 0.1);
  color: var(--danger);
  border: 1px solid rgba(220, 38, 38, 0.2);
}

/* Shimmer Text */
.shimmer-text {
  position: relative;
  overflow: hidden;
  color: transparent;
  background: linear-gradient(90deg, var(--text-secondary) 0%, var(--text-primary) 50%, var(--text-secondary) 100%);
  background-repeat: no-repeat;
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  animation: shimmerMove 3s ease-in-out infinite;
}
@keyframes shimmerMove {
  0%, 100% { background-position: -100% 0; }
  50% { background-position: 100% 0; }
}

/* Shimmer Overlay Effect */
.shimmer-overlay {
  position: relative;
  color: transparent;
  background: linear-gradient(90deg, var(--text-secondary) 0%, var(--text-primary) 50%, var(--text-secondary) 100%);
  background-repeat: no-repeat;
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
}
.shimmer-overlay::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  color: transparent;
  background: linear-gradient(90deg, transparent 0%, rgba(8, 145, 178, 0.8) 50%, transparent 100%);
  background-repeat: no-repeat;
  background-size: 40% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  animation: shimmerGlass 3s linear infinite;
}
@keyframes shimmerGlass {
  0% { background-position: -150% 0; }
  100% { background-position: 250% 0; }
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Flex */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Spacing */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

/* Form Elements */
input, textarea, select {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--text-tertiary);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 14px;input
  outline: none;
  transition: all var(--transition-base);
  width: 100%;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
}
input::placeholder, textarea::placeholder {
  color: var(--text-tertiary);
}

label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

/* Status Colors */
.status-success { color: var(--accent); }
.status-warning { color: var(--warning); }
.status-danger { color: var(--danger); }
.status-info { color: #0891b2; }

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, rgba(148, 163, 184, 0.08) 25%, rgba(148, 163, 184, 0.15) 50%, rgba(148, 163, 184, 0.08) 75%);
  background-size: 200% 100%;
  animation: skeletonPulse 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}
@keyframes skeletonPulse {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Section Divider */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-medium), transparent);
  margin: var(--space-4xl) 0;
}

/* Hide on mobile */
@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
}
@media (min-width: 769px) {
  .hide-desktop { display: none !important; }
}