/* ===== djrzm.xyz 全局样式框架 ===== */

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

/* 主题变量 - 深色默认 */
:root {
  --bg: #0a0a0f;
  --bg2: #12121a;
  --card: #1a1a2e;
  --border: #2a2a3e;
  --text: #e4e4e7;
  --text2: #a1a1aa;
  --accent: #00d4ff;
  --accent2: #7c3aed;
  --danger: #ff4757;
  --success: #2ed573;
  --radius: 12px;
  --transition: 0.2s;
}

/* 亮色主题 */
.light {
  --bg: #f5f5f7;
  --bg2: #ffffff;
  --card: #ffffff;
  --border: #e5e5ea;
  --text: #1a1a2e;
  --text2: #71717a;
}

/* 基础样式 */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { opacity: 0.8; }

/* ===== 导航栏 ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 60px;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  z-index: 100;
}

.light .nav {
  background: rgba(245,245,247,0.85);
}

.nav-inner {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
}

.nav-brand {
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  margin-left: 3rem;
  list-style: none;
}

.nav-links a {
  color: var(--text2);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--accent); }

.theme-btn {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition);
}

.theme-btn:hover { border-color: var(--accent); }

/* 移动端导航 */
.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.show {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 0; right: 0;
    background: var(--card);
    padding: 1rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-toggle { display: block; }
  .theme-btn { margin-left: 0; }
}

/* ===== 主内容区 ===== */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 2rem 2rem;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,212,255,0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ===== 卡片 ===== */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

/* ===== 输入框 ===== */
input, textarea, select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition);
  outline: none;
}

input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
}

/* ===== 状态提示 ===== */
.status {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-top: 1rem;
  display: none;
}

.status.show { display: block; }
.status.success { background: rgba(46,213,115,0.15); color: var(--success); border: 1px solid rgba(46,213,115,0.3); }
.status.error { background: rgba(255,71,87,0.15); color: var(--danger); border: 1px solid rgba(255,71,87,0.3); }
.status.info { background: rgba(0,212,255,0.15); color: var(--accent); border: 1px solid rgba(0,212,255,0.3); }

/* ===== 加载动画 ===== */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ===== 渐入动画 ===== */
@keyframes fadeInUp {
  from { opacity:0; transform: translateY(20px); }
  to { opacity:1; transform: translateY(0); }
}

.fade-in { animation: fadeInUp 0.5s ease-out; }

/* ===== 响应式 - 手机端 ===== */
@media (max-width: 768px) {
  .main { padding: 70px 0.8rem 0.8rem; }

  /* 导航 */
  .nav { padding: 0 0.8rem; gap: 4px; }
  .nav-links { gap: 4px; font-size: 13px; }
  .nav-links a { padding: 6px 8px; }

  /* 通用 */
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.2rem; }
  h3 { font-size: 1rem; }
  .card { padding: 12px; }

  /* 输入框和按钮 */
  textarea, input, select { font-size: 16px; } /* 防 iOS 缩放 */
  button { font-size: 14px; padding: 10px 16px; }
  .btn-group { flex-direction: column; }
  .btn-group button { width: 100%; }

  /* 表格 */
  table { font-size: 12px; }
  th, td { padding: 6px 4px; }

  /* Hero */
  .hero { padding: 60px 16px 40px; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }

  /* 多列变单列 */
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .flex-row { flex-direction: column; }

  /* 结果卡片 */
  .result-card { padding: 12px; }
  .result-card pre { font-size: 12px; }

  /* 弹窗 */
  .modal-content { width: 95%; padding: 16px; margin: 10% auto; }

  /* 输入区按钮 */
  .input-area button { width: 100%; }
  .input-area textarea { min-height: 80px; }
}

@media (max-width: 480px) {
  .nav-links { font-size: 12px; gap: 2px; }
  .nav-links a { padding: 4px 6px; }
  h1 { font-size: 1.3rem; }
  .hero h1 { font-size: 1.6rem; }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text2); }