:root {
    --bg: #f3f6fa;
    --card: #ffffff;
    --ink: #142033;
    --muted: #5b6b7f;
    --line: #d9e2ec;
    --brand: #0b2a4a;
    --accent: #c0392b;
    --ok: #1f7a4d;
    --warn: #9a6700;
    --info: #0b6e99;
    --danger: #b42318;
    --shadow: 0 8px 24px rgba(15, 35, 60, 0.06);
    --radius: 10px;
    --font: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: var(--font);
    color: var(--ink);
    background:
        radial-gradient(circle at top right, rgba(192, 57, 43, 0.08), transparent 28%),
        linear-gradient(180deg, #eef3f8 0%, var(--bg) 40%, #edf2f7 100%);
    min-height: 100vh;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.app-shell { min-height: 100vh; display: flex; flex-direction: column; }
.topbar {
    background: var(--brand);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 1.25rem;
    position: sticky;
    top: 0;
    z-index: 10;
}
.brand { font-weight: 700; letter-spacing: 0.02em; color: #fff; text-decoration: none; }
.brand:hover { text-decoration: none; color: #fff; }
.nav { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }
.nav a { color: #d7e4f2; font-size: 0.95rem; }
.nav a.active, .nav a:hover { color: #fff; }
.user-meta { color: #b8c9db; font-size: 0.85rem; }

.container { width: min(1100px, calc(100% - 2rem)); margin: 1.25rem auto 2rem; }
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}
.page-header h1 { margin: 0; font-size: 1.6rem; }
.page-header p { margin: 0.25rem 0 0; color: var(--muted); }

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1rem 1.1rem;
    margin-bottom: 1rem;
}
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 0.85rem;
    margin-bottom: 1rem;
}
.stat {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1rem;
    box-shadow: var(--shadow);
}
.stat .label { color: var(--muted); font-size: 0.85rem; }
.stat .value { font-size: 1.6rem; font-weight: 700; margin-top: 0.25rem; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
    text-align: left;
    padding: 0.7rem 0.55rem;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
    font-size: 0.94rem;
}
th { color: var(--muted); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; }
tr:hover td { background: #f8fafc; }

.btn, button.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 0.55rem 0.9rem;
    font: inherit;
    cursor: pointer;
    text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.05); color: #fff; }
.btn-secondary { background: #e8eef5; color: var(--brand); border-color: #d0dae6; }
.btn-danger { background: #fff; color: var(--danger); border-color: #f1c0bc; }
.btn-sm { padding: 0.35rem 0.65rem; font-size: 0.85rem; }
.inline-form { display: inline; }

.stack { display: grid; gap: 0.85rem; }
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
}
label { display: grid; gap: 0.35rem; font-size: 0.92rem; color: var(--muted); }
input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="number"],
input[type="search"],
select,
textarea {
    width: 100%;
    border: 1px solid #c9d5e3;
    border-radius: 8px;
    padding: 0.6rem 0.7rem;
    font: inherit;
    color: var(--ink);
    background: #fff;
}
textarea { min-height: 100px; resize: vertical; }
.checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--ink);
}
.checkbox input { width: auto; }
.actions { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; }
.toolbar { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; margin-bottom: 0.85rem; }
.toolbar form { display: flex; gap: 0.5rem; flex: 1; min-width: 220px; }

.alert {
    border-radius: 8px;
    padding: 0.75rem 0.9rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
}
.alert-success { background: #e8f7ef; color: var(--ok); border-color: #b7e2c8; }
.alert-error { background: #fdecec; color: var(--danger); border-color: #f3c1c1; }
.muted { color: var(--muted); }
.badge {
    display: inline-block;
    padding: 0.15rem 0.45rem;
    border-radius: 999px;
    background: #e8eef5;
    color: var(--brand);
    font-size: 0.78rem;
    font-weight: 600;
}
.badge-danger { background: #fdecec; color: var(--danger); }
.badge-warn { background: #fff6db; color: var(--warn); }
.badge-info { background: #e7f5fb; color: var(--info); }
.badge-ok { background: #e8f7ef; color: var(--ok); }

.auth-body {
    display: grid;
    place-items: center;
    min-height: 100vh;
    padding: 1rem;
}
.auth-card {
    width: min(420px, 100%);
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 1.5rem;
}
.auth-card h1 { margin: 0 0 0.35rem; font-size: 1.4rem; }

.empty { padding: 1.2rem; color: var(--muted); text-align: center; }

@media (max-width: 720px) {
    .form-grid { grid-template-columns: 1fr; }
    .topbar { flex-direction: column; align-items: flex-start; }
}