/* ===== 解压小程序 — 通用样式 ===== */

/* --- CSS 自定义属性 (主题色) --- */
:root {
  --color-bg-start: #0f0c29;
  --color-bg-mid: #1a1a3e;
  --color-bg-end: #0d2a1f;
  --color-primary: #00d4ff;
  --color-secondary: #ff6ec7;
  --color-accent: #a78bfa;
  --color-card-bg: rgba(255, 255, 255, 0.06);
  --color-card-border: rgba(255, 255, 255, 0.1);
  --color-text: #e8e8e8;
  --color-text-muted: #a8a8b8;
  --color-success: #34d399;
  --color-warning: #fbbf24;
  --color-danger: #f87171;
  --radius-card: 16px;
  --radius-btn: 10px;
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.15);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, var(--color-bg-start), var(--color-bg-mid), var(--color-bg-end));
  background-attachment: fixed;
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
  padding: 0 16px 40px;
}

/* --- 渐变标题 --- */
h1, h2, h3 {
  line-height: 1.3;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* --- 导航栏 --- */
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  max-width: 900px;
  margin: 0 auto;
  border-bottom: 1px solid var(--color-card-border);
  margin-bottom: 28px;
}

.nav-title {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 4px 10px;
  border-radius: var(--radius-btn);
  transition: var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-primary);
  background: rgba(0, 212, 255, 0.1);
}

/* --- 主容器 --- */
.container {
  max-width: 900px;
  margin: 0 auto;
}

/* --- 卡片网格 (首页用) --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

/* --- 卡片 --- */
.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-card);
  padding: 24px 18px;
  text-decoration: none;
  color: var(--color-text);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
}

.card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--shadow-glow), 0 8px 30px rgba(0, 0, 0, 0.3);
  border-color: var(--color-primary);
}

.card:active {
  transform: translateY(-2px) scale(0.98);
}

.card-icon {
  font-size: 2.8rem;
  line-height: 1;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.card-desc {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  text-decoration: none;
  color: #fff;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #0090c0);
  color: #fff;
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 0 18px rgba(0, 212, 255, 0.4);
}

.btn-primary:active {
  transform: scale(0.95);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--color-card-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: scale(1.05);
}

.btn-danger {
  background: linear-gradient(135deg, var(--color-danger), #dc2626);
}

.btn-danger:hover {
  transform: scale(1.05);
  box-shadow: 0 0 18px rgba(248, 113, 113, 0.4);
}

/* --- 工具区 (页面里的控制面板) --- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: center;
  margin: 20px 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(0, 212, 255, 0.12);
  color: var(--color-primary);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

/* --- 返回链接 (页面内) --- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 16px;
  transition: var(--transition-fast);
}

.back-link:hover {
  color: var(--color-primary);
}

/* --- 响应式 --- */
@media (max-width: 600px) {
  body {
    padding: 0 12px 32px;
  }
  .card-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .nav-bar {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
  h1 {
    font-size: 1.5rem;
  }
}

@media (max-width: 380px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}