:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --border: #334155;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --success: #22c55e;
    --error: #ef4444;
    --font-sans: system-ui, -apple-system, sans-serif;
    --font-mono: ui-monospace, 'Cascadia Code', 'Consolas', monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-sans); background: var(--bg-primary); color: var(--text-primary); line-height: 1.6; min-height: 100vh; }
.app-header { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 1.5rem; background: var(--bg-secondary); border-bottom: 1px solid var(--border); }
.app-header strong { font-size: 1rem; color: #fff; }
.app-nav { display: flex; gap: 0.25rem; }
.app-nav a { color: var(--text-secondary); text-decoration: none; padding: 0.4rem 0.75rem; border-radius: 0.375rem; font-size: 0.875rem; transition: background 0.15s; }
.app-nav a:hover, .app-nav a.active { color: #fff; background: rgba(255,255,255,0.08); }
.nav-badge { display: inline-flex; align-items: center; gap: 0.4rem; color: #fff; background: rgba(239,68,68,0.12); border: 1px solid rgba(239,68,68,0.35); }
.nav-badge:hover { background: rgba(239,68,68,0.18); }
.nav-badge-count { display: inline-flex; align-items: center; justify-content: center; min-width: 1.5rem; padding: 0 0.45rem; border-radius: 999px; background: var(--error); color: #fff; font-size: 0.75rem; font-weight: 700; line-height: 1.5rem; }
.app-main { max-width: 1200px; margin: 0 auto; padding: 1.5rem; }
h1 { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.5rem; }
h2 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
p { color: var(--text-secondary); margin-bottom: 0.75rem; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
.card { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 0.5rem; padding: 1rem; }
.card:hover { border-color: var(--text-secondary); }
.card-link { text-decoration: none; color: inherit; display: flex; flex-direction: column; gap: 0.5rem; }
.card-link h2 { margin-bottom: 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
button, .btn { background: var(--accent); color: #fff; border: none; padding: 0.5rem 1rem; border-radius: 0.375rem; cursor: pointer; font-size: 0.875rem; }
button:hover { background: var(--accent-hover); }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th, td { padding: 0.5rem 0.75rem; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--text-secondary); font-weight: 600; }
input, select, textarea { background: var(--bg-primary); border: 1px solid var(--border); color: var(--text-primary); padding: 0.5rem 0.75rem; border-radius: 0.375rem; font-size: 0.875rem; width: 100%; }
input:focus, select:focus { outline: none; border-color: var(--accent); }
label { font-size: 0.875rem; font-weight: 600; color: var(--text-secondary); display: block; margin-bottom: 0.25rem; }
.alert { padding: 0.75rem 1rem; border-radius: 0.375rem; margin-bottom: 1rem; }
.alert-info { background: rgba(59,130,246,0.1); border: 1px solid var(--accent); color: var(--accent); }
.alert-success { background: rgba(34,197,94,0.1); border: 1px solid var(--success); color: var(--success); }
.alert-error { background: rgba(239,68,68,0.1); border: 1px solid var(--error); color: var(--error); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }