/* ============================================
   DoubaoLLM.com 设计系统
   现代SaaS风格 · 参考腾讯WorkBuddy
   ============================================ */

/* ====== CSS变量 ====== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-dark: linear-gradient(135deg, #4c1d95 0%, #1e1b4b 100%);
    --gradient-blue: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
    --gradient-purple: linear-gradient(135deg, #a855f7 0%, #6366f1 100%);
    --dark: #0f172a;
    --dark-2: #1e293b;
    --dark-3: #334155;
    --sidebar-bg: #14152b;
    --sidebar-active: rgba(99,102,241,0.15);
    --bg: #f8fafc;
    --bg-2: #f1f5f9;
    --surface: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-2: #475569;
    --text-3: #94a3b8;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 24px 60px rgba(0,0,0,0.16);
    --shadow-glow: 0 0 40px rgba(99,102,241,0.2);
    --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
    --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}

/* ====== Reset ====== */
*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; -webkit-font-smoothing:antialiased; }
body { font-family:var(--font); color:var(--text); background:var(--bg); line-height:1.6; font-size:15px; }
a { color:inherit; text-decoration:none; transition:var(--transition); }
img { max-width:100%; display:block; }
ul,ol { list-style:none; }
button { font-family:inherit; cursor:pointer; border:none; outline:none; }
input,select,textarea { font-family:inherit; font-size:inherit; outline:none; }

/* ====== 容器 ====== */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.container-sm { max-width:768px; margin:0 auto; padding:0 24px; }
.container-lg { max-width:1400px; margin:0 auto; padding:0 24px; }

/* ====== 渐变文字 ====== */
.gradient-text { background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.gradient-text-blue { background:var(--gradient-blue); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }

/* ====== 按钮 ====== */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; padding:10px 24px; border-radius:var(--radius-sm); font-weight:600; font-size:14px; transition:var(--transition); white-space:nowrap; cursor:pointer; }
.btn-primary { background:var(--gradient); color:#fff; box-shadow:0 4px 14px rgba(99,102,241,0.3); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(99,102,241,0.4); }
.btn-dark { background:var(--dark); color:#fff; }
.btn-dark:hover { background:var(--dark-2); transform:translateY(-2px); }
.btn-light { background:rgba(255,255,255,0.9); color:var(--primary); backdrop-filter:blur(10px); }
.btn-light:hover { background:#fff; transform:translateY(-2px); box-shadow:var(--shadow); }
.btn-outline { border:2px solid var(--border); background:transparent; color:var(--text); }
.btn-outline:hover { border-color:var(--primary); color:var(--primary); }
.btn-ghost { background:transparent; color:var(--text-2); padding:8px 16px; }
.btn-ghost:hover { background:var(--bg-2); color:var(--text); }
.btn-sm { padding:6px 14px; font-size:13px; }
.btn-lg { padding:14px 36px; font-size:16px; }
.btn-xl { padding:18px 48px; font-size:18px; border-radius:var(--radius); }
.btn-block { display:flex; width:100%; }
.btn-danger { background:var(--danger); color:#fff; }
.btn-danger:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(239,68,68,0.3); }

/* ====== 导航栏 ====== */
.navbar { position:fixed; top:0; left:0; right:0; z-index:1000; padding:16px 0; transition:var(--transition); }
.navbar.scrolled { background:rgba(255,255,255,0.95); backdrop-filter:blur(20px); box-shadow:var(--shadow-sm); padding:12px 0; }
.navbar-inner { display:flex; align-items:center; justify-content:space-between; }
.navbar-logo { display:flex; align-items:center; gap:10px; font-size:22px; font-weight:800; }
.navbar-logo .logo-icon { width:40px; height:40px; background:var(--gradient); border-radius:10px; display:flex; align-items:center; justify-content:center; color:#fff; font-size:20px; }
.navbar-menu { display:flex; align-items:center; gap:36px; }
.navbar-menu a { font-size:15px; color:var(--text-2); font-weight:500; }
.navbar-menu a:hover { color:var(--primary); }
.navbar-actions { display:flex; align-items:center; gap:12px; }
.navbar-transparent .navbar-menu a { color:rgba(255,255,255,0.85); }
.navbar-transparent .navbar-menu a:hover { color:#fff; }
.navbar-transparent .navbar-logo { color:#fff; }

/* ====== Hero区域 ====== */
.hero { position:relative; min-height:680px; display:flex; align-items:center; overflow:hidden; background:var(--gradient-dark); }
.hero::before { content:''; position:absolute; top:-50%; left:-20%; width:800px; height:800px; background:radial-gradient(circle,rgba(99,102,241,0.3) 0%,transparent 60%); animation:float 8s ease-in-out infinite; }
.hero::after { content:''; position:absolute; bottom:-30%; right:-10%; width:600px; height:600px; background:radial-gradient(circle,rgba(168,85,247,0.25) 0%,transparent 60%); animation:float 10s ease-in-out infinite reverse; }
.hero-content { position:relative; z-index:2; padding:120px 0 80px; }
.hero-badge { display:inline-flex; align-items:center; gap:8px; padding:6px 16px; background:rgba(255,255,255,0.1); border:1px solid rgba(255,255,255,0.2); border-radius:50px; color:rgba(255,255,255,0.9); font-size:13px; font-weight:500; margin-bottom:24px; backdrop-filter:blur(10px); }
.hero-badge .dot { width:8px; height:8px; background:var(--success); border-radius:50%; animation:pulse 2s ease-in-out infinite; }
.hero h1 { font-size:56px; font-weight:800; color:#fff; line-height:1.2; margin-bottom:20px; letter-spacing:-1px; }
.hero h1 .highlight { background:linear-gradient(135deg,#818cf8 0%,#c084fc 100%); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero p { font-size:19px; color:rgba(255,255,255,0.7); margin-bottom:36px; max-width:560px; line-height:1.7; }
.hero-actions { display:flex; gap:16px; flex-wrap:wrap; }
.hero-visual { position:relative; z-index:2; }
.hero-mockup { background:rgba(255,255,255,0.08); border:1px solid rgba(255,255,255,0.12); border-radius:var(--radius-lg); padding:32px; backdrop-filter:blur(20px); box-shadow:var(--shadow-xl); }
.hero-mockup-title { color:rgba(255,255,255,0.9); font-size:14px; font-weight:600; margin-bottom:20px; display:flex; align-items:center; gap:8px; }
.hero-mockup .mock-row { display:flex; align-items:center; gap:12px; padding:12px 16px; background:rgba(255,255,255,0.05); border-radius:var(--radius-sm); margin-bottom:10px; }
.hero-mockup .mock-icon { width:36px; height:36px; border-radius:8px; display:flex; align-items:center; justify-content:center; font-size:16px; flex-shrink:0; }
.hero-mockup .mock-text { color:rgba(255,255,255,0.7); font-size:13px; }
.hero-mockup .mock-badge { margin-left:auto; padding:2px 10px; border-radius:20px; font-size:11px; font-weight:600; }

/* ====== 统计数字 ====== */
.stats-section { padding:80px 0; background:var(--surface); }
.stats-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:32px; }
.stat-card { text-align:center; }
.stat-number { font-size:48px; font-weight:800; background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; margin-bottom:8px; }
.stat-label { font-size:15px; color:var(--text-3); font-weight:500; }

/* ====== Section标题 ====== */
.section { padding:100px 0; }
.section-dark { background:var(--dark); color:#fff; }
.section-header { text-align:center; max-width:680px; margin:0 auto 64px; }
.section-tag { display:inline-block; padding:6px 16px; background:rgba(99,102,241,0.1); color:var(--primary); border-radius:50px; font-size:13px; font-weight:600; margin-bottom:16px; }
.section-dark .section-tag { background:rgba(129,140,248,0.15); color:#a5b4fc; }
.section-title { font-size:40px; font-weight:800; letter-spacing:-0.5px; margin-bottom:16px; line-height:1.3; }
.section-dark .section-title { color:#fff; }
.section-subtitle { font-size:17px; color:var(--text-3); line-height:1.7; }
.section-dark .section-subtitle { color:rgba(255,255,255,0.6); }

/* ====== 功能卡片 ====== */
.features-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; }
.feature-card { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:36px 28px; transition:var(--transition); position:relative; overflow:hidden; }
.feature-card::before { content:''; position:absolute; top:0; left:0; right:0; height:3px; background:var(--gradient); transform:scaleX(0); transform-origin:left; transition:var(--transition); }
.feature-card:hover { transform:translateY(-8px); box-shadow:var(--shadow-lg); border-color:transparent; }
.feature-card:hover::before { transform:scaleX(1); }
.feature-icon { width:56px; height:56px; border-radius:14px; display:flex; align-items:center; justify-content:center; font-size:26px; margin-bottom:20px; }
.feature-icon.purple { background:rgba(168,85,247,0.1); }
.feature-icon.blue { background:rgba(59,130,246,0.1); }
.feature-icon.green { background:rgba(16,185,129,0.1); }
.feature-icon.orange { background:rgba(249,115,22,0.1); }
.feature-icon.pink { background:rgba(236,72,153,0.1); }
.feature-icon.cyan { background:rgba(6,182,212,0.1); }
.feature-card h3 { font-size:20px; font-weight:700; margin-bottom:10px; }
.feature-card p { font-size:14px; color:var(--text-3); line-height:1.7; }

/* ====== 工作流程 ====== */
.steps-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; position:relative; }
.steps-grid::before { content:''; position:absolute; top:32px; left:12%; right:12%; height:2px; background:linear-gradient(90deg,transparent,var(--border) 10%,var(--border) 90%,transparent); }
.step-card { text-align:center; position:relative; z-index:2; }
.step-number { width:64px; height:64px; margin:0 auto 20px; border-radius:50%; background:var(--gradient); color:#fff; font-size:24px; font-weight:800; display:flex; align-items:center; justify-content:center; box-shadow:0 4px 20px rgba(99,102,241,0.3); position:relative; }
.step-number::after { content:''; position:absolute; inset:-4px; border-radius:50%; border:2px solid rgba(99,102,241,0.2); }
.step-card h4 { font-size:18px; font-weight:700; margin-bottom:8px; }
.step-card p { font-size:14px; color:var(--text-3); }

/* ====== 价格套餐 ====== */
.pricing-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:28px; align-items:stretch; }
.pricing-card { background:var(--surface); border:2px solid var(--border); border-radius:var(--radius-lg); padding:40px 32px; transition:var(--transition); position:relative; display:flex; flex-direction:column; }
.pricing-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-lg); }
.pricing-card.featured { border-color:var(--primary); box-shadow:0 12px 48px rgba(99,102,241,0.15); transform:scale(1.04); }
.pricing-card.featured::before { content:'推荐'; position:absolute; top:-14px; left:50%; transform:translateX(-50%); background:var(--gradient); color:#fff; padding:4px 20px; border-radius:20px; font-size:13px; font-weight:600; }
.pricing-name { font-size:18px; font-weight:700; margin-bottom:8px; }
.pricing-price { font-size:48px; font-weight:800; margin-bottom:4px; }
.pricing-price .unit { font-size:16px; font-weight:500; color:var(--text-3); }
.pricing-price .free { color:var(--success); }
.pricing-desc { font-size:14px; color:var(--text-3); margin-bottom:24px; padding-bottom:24px; border-bottom:1px solid var(--border); }
.pricing-features { flex:1; margin-bottom:28px; }
.pricing-features li { display:flex; align-items:center; gap:10px; padding:8px 0; font-size:14px; color:var(--text-2); }
.pricing-features li::before { content:'✓'; color:var(--success); font-weight:700; font-size:16px; }

/* ====== CTA区域 ====== */
.cta-section { padding:100px 0; background:var(--gradient); position:relative; overflow:hidden; }
.cta-section::before { content:''; position:absolute; top:-40%; left:50%; transform:translateX(-50%); width:800px; height:800px; background:radial-gradient(circle,rgba(255,255,255,0.08) 0%,transparent 60%); }
.cta-content { position:relative; z-index:2; text-align:center; max-width:680px; margin:0 auto; }
.cta-content h2 { font-size:42px; font-weight:800; color:#fff; margin-bottom:16px; }
.cta-content p { font-size:18px; color:rgba(255,255,255,0.8); margin-bottom:36px; }

/* ====== 页脚 ====== */
.footer { background:var(--dark); color:rgba(255,255,255,0.6); padding:64px 0 32px; }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; margin-bottom:48px; }
.footer-brand h3 { color:#fff; font-size:24px; font-weight:800; margin-bottom:16px; display:flex; align-items:center; gap:10px; }
.footer-brand p { font-size:14px; line-height:1.8; max-width:320px; }
.footer-col h4 { color:#fff; font-size:15px; font-weight:600; margin-bottom:16px; }
.footer-col ul li { margin-bottom:10px; }
.footer-col ul li a { font-size:14px; color:rgba(255,255,255,0.5); transition:var(--transition); }
.footer-col ul li a:hover { color:#fff; }
.footer-bottom { padding-top:32px; border-top:1px solid rgba(255,255,255,0.08); text-align:center; font-size:13px; color:rgba(255,255,255,0.4); }

/* ====== 管理后台布局 ====== */
.admin-layout { display:flex; min-height:100vh; background:var(--bg); }
.sidebar { width:240px; background:var(--sidebar-bg); position:fixed; top:0; left:0; bottom:0; z-index:100; display:flex; flex-direction:column; transition:var(--transition); }
.sidebar-header { padding:20px 24px; border-bottom:1px solid rgba(255,255,255,0.06); }
.sidebar-logo { display:flex; align-items:center; gap:10px; color:#fff; font-size:18px; font-weight:800; }
.sidebar-logo .logo-icon { width:36px; height:36px; background:var(--gradient); border-radius:8px; display:flex; align-items:center; justify-content:center; font-size:18px; }
.sidebar-nav { flex:1; padding:16px 0; overflow-y:auto; }
.sidebar-nav .nav-section { padding:12px 24px 4px; font-size:11px; text-transform:uppercase; color:rgba(255,255,255,0.3); font-weight:600; letter-spacing:1px; }
.sidebar-nav a { display:flex; align-items:center; gap:12px; padding:11px 24px; color:rgba(255,255,255,0.55); font-size:14px; font-weight:500; transition:var(--transition); border-left:3px solid transparent; }
.sidebar-nav a:hover { background:rgba(255,255,255,0.04); color:rgba(255,255,255,0.9); }
.sidebar-nav a.active { background:var(--sidebar-active); color:#fff; border-left-color:var(--primary); }
.sidebar-nav a .icon { font-size:18px; width:20px; text-align:center; }
.sidebar-footer { padding:16px 24px; border-top:1px solid rgba(255,255,255,0.06); }
.sidebar-footer a { display:flex; align-items:center; gap:10px; color:rgba(255,255,255,0.5); font-size:14px; }
.sidebar-footer a:hover { color:#fff; }

.main-content { flex:1; margin-left:240px; padding:0; }
.topbar { background:var(--surface); border-bottom:1px solid var(--border); padding:16px 32px; display:flex; align-items:center; justify-content:space-between; position:sticky; top:0; z-index:50; }
.topbar-title { font-size:20px; font-weight:700; }
.topbar-actions { display:flex; align-items:center; gap:16px; }
.topbar-user { display:flex; align-items:center; gap:10px; padding:6px 12px; background:var(--bg-2); border-radius:var(--radius-sm); cursor:pointer; }
.topbar-user .avatar { width:32px; height:32px; border-radius:50%; background:var(--gradient); display:flex; align-items:center; justify-content:center; color:#fff; font-size:14px; font-weight:600; }
.topbar-user .name { font-size:14px; font-weight:500; }
.page-content { padding:32px; }

/* ====== 卡片 ====== */
.card { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:24px; }
.card-header { display:flex; align-items:center; justify-content:space-between; margin-bottom:20px; }
.card-title { font-size:18px; font-weight:700; }

/* ====== 统计卡片 ====== */
.stat-box { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:24px; transition:var(--transition); }
.stat-box:hover { box-shadow:var(--shadow); transform:translateY(-2px); }
.stat-box .stat-icon { width:48px; height:48px; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:22px; margin-bottom:16px; }
.stat-box .stat-value { font-size:32px; font-weight:800; margin-bottom:4px; }
.stat-box .stat-meta { font-size:13px; color:var(--text-3); }
.stat-box .stat-trend { display:inline-flex; align-items:center; gap:4px; font-size:13px; font-weight:600; margin-top:8px; }
.stat-trend.up { color:var(--success); }
.stat-trend.down { color:var(--danger); }

/* ====== 表格 ====== */
.table-card { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; }
.table-toolbar { padding:16px 24px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.table-wrap { overflow-x:auto; }
table { width:100%; border-collapse:collapse; }
table th { text-align:left; padding:14px 24px; font-size:13px; font-weight:600; color:var(--text-3); text-transform:uppercase; letter-spacing:0.5px; background:var(--bg-2); border-bottom:1px solid var(--border); white-space:nowrap; }
table td { padding:14px 24px; font-size:14px; border-bottom:1px solid var(--border); }
table tbody tr { transition:var(--transition); }
table tbody tr:hover { background:var(--bg-2); }
table tbody tr:last-child td { border-bottom:none; }
.table-pagination { padding:16px 24px; border-top:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; }
.pagination-info { font-size:13px; color:var(--text-3); }
.pagination-controls { display:flex; gap:4px; }
.pagination-controls a { padding:6px 12px; border:1px solid var(--border); border-radius:6px; font-size:13px; color:var(--text-2); }
.pagination-controls a:hover { border-color:var(--primary); color:var(--primary); }
.pagination-controls a.active { background:var(--primary); color:#fff; border-color:var(--primary); }

/* ====== 表单 ====== */
.form-group { margin-bottom:20px; }
.form-label { display:block; font-size:14px; font-weight:600; margin-bottom:8px; color:var(--text-2); }
.form-label .required { color:var(--danger); }
.form-input, .form-select, .form-textarea { width:100%; padding:10px 14px; border:1px solid var(--border); border-radius:var(--radius-sm); font-size:14px; background:var(--surface); transition:var(--transition); }
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color:var(--primary); box-shadow:0 0 0 3px rgba(99,102,241,0.1); }
.form-textarea { min-height:100px; resize:vertical; }
.form-hint { font-size:12px; color:var(--text-3); margin-top:6px; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-filter { display:flex; gap:12px; flex-wrap:wrap; align-items:center; }

/* ====== 徽章 ====== */
.badge { display:inline-flex; align-items:center; padding:3px 12px; border-radius:20px; font-size:12px; font-weight:600; }
.badge-success { background:rgba(16,185,129,0.1); color:var(--success); }
.badge-warning { background:rgba(245,158,11,0.1); color:var(--warning); }
.badge-danger { background:rgba(239,68,68,0.1); color:var(--danger); }
.badge-info { background:rgba(59,130,246,0.1); color:var(--info); }
.badge-muted { background:var(--bg-2); color:var(--text-3); }

/* ====== 模态框 ====== */
.modal-overlay { position:fixed; inset:0; background:rgba(15,23,42,0.6); backdrop-filter:blur(4px); z-index:2000; display:flex; align-items:center; justify-content:center; padding:24px; opacity:0; pointer-events:none; transition:var(--transition); }
.modal-overlay.show { opacity:1; pointer-events:auto; }
.modal { background:var(--surface); border-radius:var(--radius-lg); width:100%; max-width:560px; max-height:90vh; overflow-y:auto; box-shadow:var(--shadow-xl); transform:scale(0.95); transition:var(--transition); }
.modal-overlay.show .modal { transform:scale(1); }
.modal-header { padding:24px 28px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; }
.modal-title { font-size:20px; font-weight:700; }
.modal-close { width:36px; height:36px; border-radius:8px; display:flex; align-items:center; justify-content:center; background:var(--bg-2); font-size:20px; color:var(--text-3); cursor:pointer; }
.modal-close:hover { background:var(--danger); color:#fff; }
.modal-body { padding:28px; }
.modal-footer { padding:16px 28px; border-top:1px solid var(--border); display:flex; justify-content:flex-end; gap:12px; }

/* ====== 网格布局 ====== */
.grid-2 { display:grid; grid-template-columns:repeat(2,1fr); gap:24px; }
.grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.grid-4 { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }

/* ====== 登录页 ====== */
.auth-page { min-height:100vh; display:flex; }
.auth-left { flex:1; background:var(--gradient-dark); display:flex; flex-direction:column; justify-content:center; padding:64px; position:relative; overflow:hidden; }
.auth-left::before { content:''; position:absolute; top:-30%; right:-20%; width:500px; height:500px; background:radial-gradient(circle,rgba(99,102,241,0.2) 0%,transparent 60%); }
.auth-left::after { content:''; position:absolute; bottom:-20%; left:-10%; width:400px; height:400px; background:radial-gradient(circle,rgba(168,85,247,0.15) 0%,transparent 60%); }
.auth-brand { position:relative; z-index:2; }
.auth-brand h1 { color:#fff; font-size:42px; font-weight:800; margin-bottom:16px; line-height:1.3; }
.auth-brand p { color:rgba(255,255,255,0.6); font-size:17px; line-height:1.8; max-width:420px; margin-bottom:40px; }
.auth-features { position:relative; z-index:2; }
.auth-features li { display:flex; align-items:center; gap:12px; color:rgba(255,255,255,0.7); font-size:15px; margin-bottom:16px; }
.auth-features li .check { width:24px; height:24px; border-radius:50%; background:rgba(16,185,129,0.2); color:var(--success); display:flex; align-items:center; justify-content:center; font-size:14px; }
.auth-right { width:520px; display:flex; align-items:center; justify-content:center; padding:64px; background:var(--surface); }
.auth-form { width:100%; max-width:360px; }
.auth-form h2 { font-size:28px; font-weight:800; margin-bottom:8px; }
.auth-form .subtitle { color:var(--text-3); margin-bottom:32px; }
.auth-form .form-group { margin-bottom:18px; }

/* ====== 代码块 ====== */
.code-block { background:var(--dark); border-radius:var(--radius-sm); padding:20px; overflow-x:auto; position:relative; }
.code-block pre { color:#a5b4fc; font-size:13px; line-height:1.8; font-family:'SF Mono',Consolas,Monaco,monospace; white-space:pre-wrap; word-break:break-all; }
.code-copy { position:absolute; top:12px; right:12px; padding:4px 12px; background:rgba(255,255,255,0.1); color:#fff; border-radius:6px; font-size:12px; cursor:pointer; }
.code-copy:hover { background:rgba(255,255,255,0.2); }

/* ====== 空状态 ====== */
.empty-state { text-align:center; padding:60px 20px; }
.empty-state .icon { font-size:48px; margin-bottom:16px; }
.empty-state h3 { font-size:18px; font-weight:600; margin-bottom:8px; }
.empty-state p { font-size:14px; color:var(--text-3); }

/* ====== 进度条 ====== */
.progress { height:8px; background:var(--bg-2); border-radius:4px; overflow:hidden; }
.progress-bar { height:100%; background:var(--gradient); border-radius:4px; transition:width 0.6s ease; }

/* ====== 柱状图 ====== */
.chart-bars { display:flex; align-items:flex-end; gap:8px; height:160px; padding:16px 0; }
.chart-bar { flex:1; display:flex; flex-direction:column; align-items:center; gap:8px; }
.chart-bar-fill { width:100%; max-width:40px; background:var(--gradient); border-radius:6px 6px 0 0; min-height:4px; transition:height 0.6s ease; opacity:0.8; }
.chart-bar-fill:hover { opacity:1; }
.chart-bar-label { font-size:11px; color:var(--text-3); }

/* ====== Toast通知 ====== */
.toast { position:fixed; top:24px; right:24px; z-index:3000; padding:14px 24px; border-radius:var(--radius-sm); font-size:14px; font-weight:500; box-shadow:var(--shadow-lg); transform:translateX(400px); transition:var(--transition); display:flex; align-items:center; gap:10px; }
.toast.show { transform:translateX(0); }
.toast-success { background:var(--success); color:#fff; }
.toast-error { background:var(--danger); color:#fff; }
.toast-info { background:var(--info); color:#fff; }

/* ====== 动画 ====== */
@keyframes float { 0%,100% { transform:translate(0,0); } 50% { transform:translate(20px,-30px); } }
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:0.5; } }
@keyframes fadeInUp { from { opacity:0; transform:translateY(30px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes slideInLeft { from { opacity:0; transform:translateX(-30px); } to { opacity:1; transform:translateX(0); } }
@keyframes scaleIn { from { opacity:0; transform:scale(0.9); } to { opacity:1; transform:scale(1); } }
@keyframes spin { to { transform:rotate(360deg); } }
.animate-fade-up { animation:fadeInUp 0.6s ease forwards; }
.animate-fade-in { animation:fadeIn 0.6s ease forwards; }
.animate-slide-left { animation:slideInLeft 0.6s ease forwards; }
.animate-scale { animation:scaleIn 0.4s ease forwards; }
.delay-1 { animation-delay:0.1s; opacity:0; }
.delay-2 { animation-delay:0.2s; opacity:0; }
.delay-3 { animation-delay:0.3s; opacity:0; }
.delay-4 { animation-delay:0.4s; opacity:0; }
.delay-5 { animation-delay:0.5s; opacity:0; }
.delay-6 { animation-delay:0.6s; opacity:0; }

/* ====== 工具类 ====== */
.text-center { text-align:center; }
.text-right { text-align:right; }
.text-muted { color:var(--text-3); }
.text-success { color:var(--success); }
.text-danger { color:var(--danger); }
.text-warning { color:var(--warning); }
.fw-bold { font-weight:700; }
.fw-600 { font-weight:600; }
.mt-0 { margin-top:0; }
.mt-8 { margin-top:8px; }
.mt-16 { margin-top:16px; }
.mt-24 { margin-top:24px; }
.mt-32 { margin-top:32px; }
.mb-0 { margin-bottom:0; }
.mb-16 { margin-bottom:16px; }
.mb-24 { margin-bottom:24px; }
.mb-32 { margin-bottom:32px; }
.flex { display:flex; }
.items-center { align-items:center; }
.justify-between { justify-content:space-between; }
.gap-8 { gap:8px; }
.gap-12 { gap:12px; }
.gap-16 { gap:16px; }
.gap-24 { gap:24px; }
.w-full { width:100%; }
.hidden { display:none; }

/* ====== 响应式 ====== */
@media (max-width:968px) {
    .hero h1 { font-size:36px; }
    .hero p { font-size:16px; }
    .features-grid, .pricing-grid, .steps-grid { grid-template-columns:1fr; }
    .stats-grid { grid-template-columns:repeat(2,1fr); }
    .footer-grid { grid-template-columns:1fr 1fr; }
    .auth-left { display:none; }
    .auth-right { width:100%; }
    .sidebar { transform:translateX(-100%); }
    .sidebar.show { transform:translateX(0); }
    .main-content { margin-left:0; }
    .section { padding:60px 0; }
    .section-title { font-size:30px; }
    .grid-4 { grid-template-columns:repeat(2,1fr); }
    .navbar-menu { display:none; }
}
@media (max-width:640px) {
    .stats-grid, .grid-2, .grid-3, .grid-4 { grid-template-columns:1fr; }
    .form-row { grid-template-columns:1fr; }
    .footer-grid { grid-template-columns:1fr; }
    .hero h1 { font-size:28px; }
    .pricing-card.featured { transform:none; }
}