:root {
  --bg: #ffffff; --fg: #0b1220; --muted: #64748b; --border: #e2e8f0;
  --card: #ffffff; --primary: #4f46e5; --primary-fg: #ffffff;
  --accent: #eef2ff; --shadow: 0 10px 30px -12px rgba(79,70,229,.25);
}
[data-theme="dark"] {
  --bg: #0b1020; --fg: #e5e7eb; --muted: #94a3b8; --border: #1e293b;
  --card: #111827; --primary: #818cf8; --primary-fg: #0b1020;
  --accent: #1e1b4b; --shadow: 0 10px 30px -12px rgba(0,0,0,.6);
}
*,*:before,*:after { box-sizing: border-box; }
html,body { margin:0; padding:0; background:var(--bg); color:var(--fg); font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.btn { display:inline-flex; align-items:center; gap:.5rem; padding:.6rem 1.1rem; border-radius:.7rem; font-weight:600; font-size:.9rem; cursor:pointer; border:1px solid var(--border); background:var(--card); color:var(--fg); transition:all .15s; }
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: var(--primary); color:var(--primary-fg); border-color:var(--primary); box-shadow: var(--shadow); }
.btn.ghost { background: transparent; }
.btn.sm { padding:.4rem .8rem; font-size:.8rem; }
.card { background: var(--card); border:1px solid var(--border); border-radius:.9rem; padding:1.2rem; box-shadow: var(--shadow); }
.grid { display: grid; gap: 1rem; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px){ .grid.cols-3,.grid.cols-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px){ .grid.cols-2,.grid.cols-3,.grid.cols-4 { grid-template-columns: 1fr; } }
.nav { position: sticky; top:0; z-index:20; background: color-mix(in oklab, var(--bg) 88%, transparent); backdrop-filter: blur(12px); border-bottom:1px solid var(--border); }
.nav-inner { display:flex; align-items:center; justify-content:space-between; height:64px; }
.brand { display:flex; align-items:center; gap:.6rem; font-weight:700; }
.brand-badge { width:32px; height:32px; border-radius:.6rem; background: linear-gradient(135deg,#6366f1,#8b5cf6); display:grid; place-items:center; color:white; font-weight:800; }
.nav-links { display:flex; gap:1.5rem; font-size:.9rem; color:var(--muted); }
.nav-links a:hover { color: var(--fg); }
@media (max-width:768px){ .nav-links { display:none; } }
.hero { padding: 5rem 0 4rem; text-align:left; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 4rem); line-height:1.05; margin:0 0 1rem; letter-spacing:-.02em; }
.hero p { font-size:1.15rem; color: var(--muted); max-width:640px; margin:0 0 1.8rem; }
.badge { display:inline-flex; align-items:center; gap:.5rem; padding:.35rem .8rem; border-radius:999px; background:var(--accent); color:var(--primary); font-size:.8rem; font-weight:600; margin-bottom:1.2rem; }
.section { padding: 4rem 0; }
.section h2 { font-size: 2rem; margin:0 0 2rem; letter-spacing:-.01em; }
.feature { padding:1.5rem; border-radius:.9rem; background: var(--card); border:1px solid var(--border); }
.feature .icon { width:40px; height:40px; border-radius:.5rem; background:var(--accent); display:grid; place-items:center; margin-bottom:.8rem; color:var(--primary); font-size:1.3rem; }
.feature h3 { margin:0 0 .5rem; font-size:1.1rem; }
.feature p { margin:0; color:var(--muted); font-size:.9rem; line-height:1.5; }
.footer { border-top:1px solid var(--border); padding: 2rem 0; text-align:center; color:var(--muted); font-size:.85rem; }
.footer a { color:var(--primary); font-weight:600; }
/* auth */
.auth-wrap { min-height:100vh; display:grid; grid-template-columns: 1fr 1fr; }
@media (max-width:900px){ .auth-wrap { grid-template-columns:1fr; } }
.auth-side { background: linear-gradient(135deg,#4f46e5,#7c3aed,#ec4899); color:white; padding:3rem; display:flex; flex-direction:column; justify-content:space-between; }
.auth-form { padding:3rem 2rem; display:flex; flex-direction:column; justify-content:center; max-width:480px; margin: 0 auto; width:100%; }
.field { display:flex; flex-direction:column; gap:.35rem; margin-bottom:1rem; }
.field label { font-size:.85rem; font-weight:500; }
.field input, .field textarea, .field select { padding:.7rem .9rem; border-radius:.6rem; border:1px solid var(--border); background:var(--card); color:var(--fg); font-size:.95rem; font-family:inherit; }
.field input:focus, .field textarea:focus { outline:2px solid var(--primary); outline-offset:1px; }
/* workspace */
.app { display:grid; grid-template-columns: 240px 1fr; min-height:100vh; }
@media (max-width:768px){ .app { grid-template-columns:1fr; } .sidebar { display:none; } }
.sidebar { border-right:1px solid var(--border); background:var(--card); padding:1.2rem .8rem; }
.sidebar .brand { padding: 0 .8rem 1.2rem; border-bottom:1px solid var(--border); margin-bottom:1rem; }
.side-link { display:flex; align-items:center; gap:.6rem; padding:.6rem .8rem; border-radius:.5rem; color:var(--muted); font-size:.9rem; font-weight:500; cursor:pointer; }
.side-link:hover, .side-link.active { background:var(--accent); color:var(--primary); }
.topbar { display:flex; align-items:center; justify-content:space-between; padding: 1rem 1.5rem; border-bottom:1px solid var(--border); background: color-mix(in oklab, var(--bg) 92%, transparent); backdrop-filter: blur(8px); position:sticky; top:0; z-index:10; }
.main { padding: 1.8rem; }
.page-title { font-size:1.6rem; margin:0 0 .3rem; font-weight:700; }
.page-sub { color:var(--muted); margin:0 0 1.5rem; font-size:.95rem; }
.stat { background:var(--card); border:1px solid var(--border); border-radius:.8rem; padding:1.2rem; }
.stat .n { font-size:2rem; font-weight:700; }
.stat .l { color:var(--muted); font-size:.85rem; margin-top:.2rem; }
table { width:100%; border-collapse:collapse; }
th, td { text-align:left; padding:.7rem .9rem; border-bottom:1px solid var(--border); font-size:.9rem; }
th { color:var(--muted); font-weight:600; font-size:.8rem; text-transform:uppercase; letter-spacing:.05em; }
.tag { display:inline-block; padding:.15rem .55rem; border-radius:.4rem; font-size:.7rem; font-weight:600; background:var(--accent); color:var(--primary); text-transform:uppercase; letter-spacing:.05em; }
.theme-toggle { border:1px solid var(--border); background:var(--card); border-radius:.5rem; padding:.4rem .6rem; cursor:pointer; font-size:.85rem; }
.hidden { display:none !important; }
.empty { text-align:center; padding:3rem 1rem; color:var(--muted); }
.toast { position:fixed; bottom:1.5rem; right:1.5rem; background:var(--card); border:1px solid var(--border); padding:.8rem 1.2rem; border-radius:.6rem; box-shadow:var(--shadow); z-index:100; animation: slidein .3s; }
@keyframes slidein { from { transform: translateY(20px); opacity:0; } to { transform:none; opacity:1; } }