:root{color-scheme:dark;font-family:system-ui,sans-serif}body{margin:0;background:#0d0f12;color:#e6e6e6}.container{max-width:960px;margin:0 auto;padding:24px}.card{background:#16191f;border:1px solid #262b33;border-radius:8px;padding:20px;margin-bottom:16px}input,select,textarea{background:#0d0f12;color:#e6e6e6;border:1px solid #333a44;border-radius:6px;padding:8px 10px;font-size:14px}button{background:#dc2626;color:#fff;border:0;border-radius:6px;padding:8px 16px;font-size:14px;cursor:pointer}button:disabled{opacity:.5;cursor:default}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:6px 8px;border-bottom:1px solid #262b33}.error{color:#f87171}.nav{display:flex;gap:16px;align-items:center;padding:12px 24px;border-bottom:1px solid #262b33}.nav a{color:#e6e6e6;text-decoration:none}.nav a.active{color:#dc2626}