/* 独角兽防御系统 - 全局样式 */
:root {
    --bg: #0a0e1a;
    --bg2: #111827;
    --card: #1a2236;
    --border: #2a3550;
    --text: #e8ecf4;
    --muted: #8892a8;
    --accent: #6c5ce7;
    --accent2: #00d2a8;
    --danger: #ff4757;
    --warning: #ffa502;
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Nav */
.nav {
    background: rgba(10,14,26,0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-brand { font-size: 20px; font-weight: 700; color: var(--text); }
.nav-brand span { color: var(--accent2); }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { color: var(--muted); font-size: 14px; }
.nav-links a:hover, .nav-links a.active { color: var(--text); text-decoration: none; }
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all .2s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #5a4bd1; text-decoration: none; }
.btn-success { background: var(--accent2); color: #0a0e1a; }
.btn-success:hover { background: #00b894; text-decoration: none; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 13px; }

/* Hero */
.hero {
    text-align: center;
    padding: 100px 24px 80px;
    background: radial-gradient(ellipse at top, rgba(108,92,231,0.15) 0%, transparent 60%);
}
.hero h1 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, var(--accent2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero p { font-size: 18px; color: var(--muted); max-width: 600px; margin: 0 auto 32px; }
.hero-badges { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 32px; }
.badge {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    color: var(--muted);
}

/* Features */
.features {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}
.feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px;
    transition: transform .2s, border-color .2s;
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.feature-icon { font-size: 32px; margin-bottom: 16px; }
.feature-card h3 { font-size: 18px; margin-bottom: 8px; }
.feature-card p { color: var(--muted); font-size: 14px; }

/* Auth pages */
.auth-wrap {
    max-width: 420px;
    margin: 60px auto;
    padding: 0 24px;
}
.auth-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
}
.auth-card h2 { font-size: 24px; margin-bottom: 8px; }
.auth-card .sub { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: border-color .2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--accent);
}
.form-row { display: flex; gap: 12px; align-items: flex-end; }
.form-row .captcha-img { cursor: pointer; border-radius: 8px; height: 44px; }
.auth-footer { text-align: center; margin-top: 20px; font-size: 14px; color: var(--muted); }
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}
.alert-error { background: rgba(255,71,87,0.1); border: 1px solid rgba(255,71,87,0.3); color: #ff6b7a; }
.alert-success { background: rgba(0,210,168,0.1); border: 1px solid rgba(0,210,168,0.3); color: #00d2a8; }

/* Dashboard */
.dash-layout {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 24px;
}
.dash-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}
.dash-header h2 { font-size: 28px; }
.panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px;
    margin-bottom: 24px;
}
.panel h3 { font-size: 16px; margin-bottom: 20px; color: var(--accent2); }
.toggle-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}
.toggle-row:last-child { border-bottom: none; }
.toggle-row .label { font-size: 14px; }
.toggle-row .desc { font-size: 12px; color: var(--muted); margin-top: 2px; }
.switch { position: relative; width: 48px; height: 26px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
    position: absolute; inset: 0;
    background: var(--border);
    border-radius: 26px;
    cursor: pointer;
    transition: .2s;
}
.slider:before {
    content: '';
    position: absolute;
    width: 20px; height: 20px;
    left: 3px; top: 3px;
    background: #fff;
    border-radius: 50%;
    transition: .2s;
}
.switch input:checked + .slider { background: var(--accent2); }
.switch input:checked + .slider:before { transform: translateX(22px); }
.checkbox-group { display: flex; flex-wrap: wrap; gap: 8px; }
.checkbox-item {
    display: flex; align-items: center; gap: 6px;
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
}
.checkbox-item input { accent-color: var(--accent2); }
textarea.code-list {
    width: 100%;
    min-height: 80px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    padding: 12px;
    font-family: monospace;
    font-size: 13px;
    resize: vertical;
}

/* Table */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 12px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
.table th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }

/* Footer */
.footer {
    text-align: center;
    padding: 40px 24px;
    color: var(--muted);
    font-size: 13px;
    border-top: 1px solid var(--border);
    margin-top: 60px;
}