/* ===== 职场AI工具箱 - 设计系统 ===== */
:root {
  --bg: #f8fafc;
  --bg2: #ffffff;
  --bg3: #f1f5f9;
  --text: #0f172a;
  --t2: #64748b;
  --t3: #94a3b8;
  --border: #e2e8f0;
  --primary: #6366f1;
  --primary-h: #4f46e5;
  --primary-l: #eef2ff;
  --success: #10b981;
  --success-l: #ecfdf5;
  --warning: #f59e0b;
  --warning-l: #fffbeb;
  --danger: #ef4444;
  --danger-l: #fef2f2;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
  --shadow-lg: 0 4px 12px rgba(0,0,0,.1);
  --radius: 12px;
  --radius-sm: 8px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

[data-theme="dark"] {
  --bg: #0f172a;
  --bg2: #1e293b;
  --bg3: #334155;
  --text: #f1f5f9;
  --t2: #94a3b8;
  --t3: #64748b;
  --border: #334155;
  --primary-l: #1e1b4b;
  --shadow: 0 1px 3px rgba(0,0,0,.3);
  --shadow-lg: 0 4px 12px rgba(0,0,0,.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.6; min-height: 100vh; }
a { color: var(--primary); text-decoration: none; }

/* ===== 布局 ===== */
.container { max-width: 960px; margin: 0 auto; padding: 0 16px; }

/* ===== 导航栏 ===== */
.navbar {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.nav-brand { font-size: 20px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-user { display: flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; }
.credits-badge {
  background: var(--primary-l);
  color: var(--primary);
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 20px; border-radius: var(--radius-sm); font-size: 14px; font-weight: 600;
  cursor: pointer; border: none; transition: all .2s; text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-h); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary-l); }
.btn-ghost { background: transparent; color: var(--t2); border: none; padding: 6px 12px; }
.btn-ghost:hover { color: var(--text); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }

/* ===== 卡片 ===== */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ===== 工具网格 ===== */
.hero { text-align: center; padding: 48px 0 32px; }
.hero h1 { font-size: 36px; font-weight: 800; margin-bottom: 8px; }
.hero p { color: var(--t2); font-size: 18px; max-width: 600px; margin: 0 auto; }

.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; padding: 24px 0; }
.tool-card { cursor: pointer; display: flex; gap: 16px; align-items: flex-start; }
.tool-card .tool-icon { font-size: 36px; flex-shrink: 0; }
.tool-card .tool-name { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.tool-card .tool-desc { font-size: 13px; color: var(--t2); }

/* ===== 表单 ===== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--t2); }
.form-input {
  width: 100%; padding: 10px 14px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--text); font-size: 14px; font-family: inherit;
  transition: border-color .2s;
}
.form-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-l); }
textarea.form-input { min-height: 200px; resize: vertical; line-height: 1.6; }

/* ===== 弹窗 ===== */
.modal-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5);
  z-index: 200; align-items: center; justify-content: center; padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--bg2); border-radius: var(--radius); padding: 32px;
  max-width: 700px; width: 100%; max-height: 85vh; overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.modal-header h2 { font-size: 22px; }
.modal-close { font-size: 24px; cursor: pointer; color: var(--t3); background: none; border: none; padding: 4px 8px; }
.modal-close:hover { color: var(--text); }

/* ===== 认证页面 ===== */
.auth-page { display: flex; align-items: center; justify-content: center; min-height: 80vh; }
.auth-card { width: 100%; max-width: 400px; }
.auth-card h1 { text-align: center; margin-bottom: 8px; }
.auth-tabs { display: flex; gap: 0; margin-bottom: 20px; border-bottom: 2px solid var(--border); }
.auth-tab {
  flex: 1; padding: 10px; text-align: center; cursor: pointer; font-weight: 600;
  color: var(--t2); border-bottom: 2px solid transparent; margin-bottom: -2px;
  background: none; border-top: none; border-left: none; border-right: none; font-size: 14px;
}
.auth-tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.error-msg { color: var(--danger); font-size: 13px; margin-top: 8px; min-height: 20px; }

/* ===== 工具使用页 ===== */
.tool-page { padding: 32px 0; max-width: 800px; margin: 0 auto; }
.tool-page .form-input { min-height: 180px; }
.output-box {
  margin-top: 20px; padding: 20px; background: var(--bg3); border-radius: var(--radius-sm);
  white-space: pre-wrap; line-height: 1.8; font-size: 14px; min-height: 60px;
}
.output-box.loading { display: flex; align-items: center; justify-content: center; color: var(--t3); }
.spinner { display: inline-block; width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== 会员页 ===== */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; padding: 24px 0; }
.pricing-card { text-align: center; cursor: pointer; border: 2px solid var(--border); }
.pricing-card.selected { border-color: var(--primary); background: var(--primary-l); }
.pricing-card .price { font-size: 28px; font-weight: 800; color: var(--primary); margin: 12px 0 4px; }
.pricing-card .credits { font-size: 14px; color: var(--t2); margin-bottom: 8px; }
.pricing-card .unit { font-size: 12px; color: var(--t3); }

/* ===== 标签 ===== */
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 11px; font-weight: 600;
}
.badge-free { background: var(--primary-l); color: var(--primary); }
.badge-pro { background: var(--success-l); color: var(--success); }
.badge-pending { background: var(--warning-l); color: var(--warning); }
.badge-verified { background: var(--success-l); color: var(--success); }

/* ===== 表格 ===== */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { font-weight: 600; color: var(--t2); font-size: 12px; text-transform: uppercase; }

/* ===== 页面切换 ===== */
.page { display: none; }
.page.active { display: block; }

/* ===== 底部 ===== */
.footer { text-align: center; padding: 40px 0; color: var(--t3); font-size: 13px; border-top: 1px solid var(--border); margin-top: 48px; }

/* ===== 响应式 ===== */
@media (max-width: 640px) {
  .hero h1 { font-size: 28px; }
  .hero p { font-size: 15px; }
  .pricing-grid { grid-template-columns: 1fr 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .navbar .nav-brand { font-size: 16px; }
  .modal { padding: 20px; margin: 10px; }
}

/* ===== Toast ===== */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 12px 24px;
  border-radius: var(--radius-sm); font-size: 14px; z-index: 300;
  animation: toastIn .3s ease;
}
@keyframes toastIn { from { opacity: 0; transform: translateX(-50%) translateY(20px); } }

/* ===== 龙人世界迁移：工具类CSS ===== */
:root {
  --wn: #ffd700; --ac: #d4a030; --dg: #ff3355; --sc: #00ff88; --gl: #d4a03044;
  --bl: #4488ff; --pu: #aa55ff; --tx: #0f172a; --cd: #ffffff; --ch: #f1f5f9;
}
[data-theme="dark"] {
  --tx: #e0e0e0; --cd: #12121a; --ch: #1a1a28;
  --wn: #ffd700; --ac: #d4a030; --dg: #ff3355; --sc: #00ff88; --gl: #d4a03044;
  --bl: #4488ff; --pu: #aa55ff;
}
.cd { background: var(--cd); border:1px solid var(--border); border-radius:8px; }
.db { background:linear-gradient(135deg,var(--ac),#c89020); border:none; color:#fff; padding:9px 18px; border-radius:8px; font-size:13px; font-weight:700; cursor:pointer; transition:.3s; text-shadow:0 1px 3px rgba(0,0,0,.3); }
.db:hover { transform:translateY(-2px); box-shadow:0 4px 15px var(--gl); }
.mi { background:var(--bg3); color:var(--text); }
.di { background:var(--cd); border:1px solid var(--border); color:var(--text); padding:9px 12px; border-radius:8px; font-size:13px; width:100%; outline:none; transition:.3s; }
.di:focus { border-color:var(--ac); box-shadow:0 0 8px var(--gl); }
.ig { display:flex; flex-wrap:wrap; }
.ab { background:var(--bg3); border-radius:999px; overflow:hidden; }
.h { display:none; }
.tcg { color:var(--t2); font-size:12px; }
.cs { color:var(--sc); font-size:15px; font-weight:700; }
.mt8 { margin-top:8px; }
.mb8 { margin-bottom:8px; }
.fd { animation:fd .4s; }
@keyframes fd { from { opacity:0; transform:scale(.8); } }