:root {
    --bg: #f4f6fb;
    --surface: #ffffff;
    --surface-soft: #eef3ff;
    --text: #13243b;
    --muted: #607089;
    --primary: #0f5ba8;
    --border: #d5deeb;
    --danger: #b42318;
    --success: #0f766e;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Aptos", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(15, 91, 168, 0.08), transparent 22rem),
        linear-gradient(180deg, #fbfcff 0%, var(--bg) 100%);
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.shell {
    width: min(1180px, calc(100% - 32px));
    margin: 24px auto 48px;
}

.shell-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: start;
    padding: 20px 24px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(213, 222, 235, 0.9);
    border-radius: 22px;
    box-shadow: 0 18px 36px rgba(16, 24, 40, 0.08);
}

.brand { font-size: 38px; font-weight: 800; color: var(--text); }
.shell-description { margin: 8px 0 0; color: var(--muted); }

.user-box {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    color: var(--muted);
}

.shell-nav {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 18px 0 22px;
}

.shell-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 16px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.86);
    color: var(--text);
    font-weight: 700;
    text-decoration: none;
}

.shell-nav a.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.shell-main { display: grid; gap: 18px; }

.panel {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(213, 222, 235, 0.92);
    border-radius: 22px;
    box-shadow: 0 18px 36px rgba(16, 24, 40, 0.08);
    padding: 22px 24px;
}

.grid { display: grid; gap: 16px; }
.grid.cards { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.card-link {
    display: block;
    padding: 18px;
    border-radius: 18px;
    border: 1px solid var(--border);
    background: linear-gradient(180deg, var(--surface) 0%, var(--surface-soft) 100%);
    color: inherit;
    text-decoration: none;
}

.card-link-shell {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.card-link-main {
    display: block;
    color: inherit;
    text-decoration: none;
}

.card-link-main:hover {
    text-decoration: none;
}

.card-link-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.card-link h3 { margin: 0 0 8px; }
.card-link p { margin: 0; color: var(--muted); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { background: #eef4fb; font-weight: 700; }

.actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.sync-form { margin: 0; }
.sync-form button,
.sync-form .button-link {
    min-height: 38px;
    padding: 0 14px;
}

form.grid-form { display: grid; gap: 14px; }
.field-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

label { display: grid; gap: 6px; font-weight: 600; }

input[type="text"], input[type="password"], textarea, select {
    width: 100%;
    min-height: 42px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
    font: inherit;
}

textarea { min-height: 96px; resize: vertical; }

button, .button-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 16px;
    border-radius: 12px;
    border: 1px solid var(--primary);
    background: var(--primary);
    color: #fff;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
}

.button-link.secondary, button.secondary { background: #fff; color: var(--primary); }

.error-box, .success-box {
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid var(--border);
}

.error-box { color: var(--danger); background: #fff4f3; border-color: rgba(180, 35, 24, 0.2); }
.success-box { color: var(--success); background: #f1fbf8; border-color: rgba(15, 118, 110, 0.2); }

.checkbox-list { display: grid; gap: 8px; }
.checkbox-list label { display: flex; gap: 10px; align-items: center; font-weight: 500; }
.muted { color: var(--muted); }