* { box-sizing: border-box; }

:root {
    --bg: #f4f7fb;
    --panel: #ffffff;
    --text: #243447;
    --muted: #6b7a8c;
    --primary: #174a7e;
    --primary-dark: #123a63;
    --border: #dce4ec;
    --danger-bg: #fdecec;
    --danger: #a12626;
    --success-bg: #eaf7ee;
    --success: #216e39;
    --warning-bg: #fff5d8;
    --warning: #8a6410;
    --light: #eef3f7;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--bg);
    color: var(--text);
}

a { color: var(--primary); }

h1 { margin: 0 0 8px; }
h2 { margin-top: 0; }
hr { border: 0; border-top: 1px solid var(--border); margin: 26px 0; }

.muted { color: var(--muted); }

.login-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-card {
    width: min(440px, 100%);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 18px 50px rgba(20, 44, 68, .10);
}

.brand-mark {
    width: 54px;
    height: 54px;
    border-radius: 14px;
    background: var(--primary);
    color: white;
    display: grid;
    place-items: center;
    font-weight: 700;
    font-size: 28px;
    margin-bottom: 16px;
}

.brand-mark.small {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    margin: 0;
    font-size: 20px;
}

label {
    display: block;
    font-weight: 600;
    margin: 16px 0 6px;
}

input,
select,
textarea {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: white;
    color: var(--text);
    font: inherit;
}

input:focus,
select:focus,
textarea:focus {
    outline: 2px solid rgba(23, 74, 126, .14);
    border-color: var(--primary);
}

input:disabled,
select:disabled {
    background: #eef2f5;
    color: #6c7985;
}

.field-help {
    display: block;
    margin-top: 5px;
    color: var(--muted);
    font-size: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 10px 14px;
    margin: 0;
    width: auto;
    font: inherit;
    font-weight: 700;
    line-height: 1.1;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
}

.btn-block {
    width: 100%;
    margin-top: 20px;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover { background: var(--primary-dark); }

.btn-secondary {
    background: #425b72;
    color: white;
}

.btn-light {
    background: var(--light);
    color: var(--text);
    border-color: var(--border);
}

.btn-danger {
    background: #b64040;
    color: white;
}

.btn-success {
    background: #2f7b49;
    color: white;
}

.btn-small {
    padding: 7px 9px;
    font-size: 12px;
}

.alert {
    margin: 0 0 18px;
    padding: 11px 12px;
    border-radius: 8px;
}

.alert-danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.alert-success {
    background: var(--success-bg);
    color: var(--success);
}

.info-box {
    margin-top: 20px;
    padding: 12px 14px;
    background: #edf5fb;
    border: 1px solid #cfe1ef;
    border-radius: 8px;
}

.setup-link {
    text-align: center;
    font-size: 13px;
    margin-top: 20px;
}

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 250px 1fr;
}

.sidebar {
    background: #173b5f;
    color: white;
    padding: 20px 14px;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 8px 22px;
    border-bottom: 1px solid rgba(255,255,255,.14);
}

.sidebar-brand small {
    display: block;
    opacity: .72;
    margin-top: 3px;
}

.sidebar nav {
    display: grid;
    gap: 5px;
    margin-top: 16px;
}

.nav-section {
    margin: 18px 10px 5px;
    color: rgba(255,255,255,.48);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .9px;
}

.sidebar nav a {
    color: rgba(255,255,255,.84);
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 8px;
}

.sidebar nav a:hover,
.sidebar nav a.active {
    background: rgba(255,255,255,.12);
    color: white;
}

.main-area { min-width: 0; }

.topbar {
    min-height: 78px;
    background: white;
    border-bottom: 1px solid var(--border);
    padding: 16px 26px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.topbar h1 { font-size: 23px; }
.topbar p { margin: 4px 0 0; }

.user-box {
    display: grid;
    text-align: right;
    gap: 2px;
}

.user-box small { color: var(--muted); }

.user-links {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 3px;
    font-size: 12px;
}

.content { padding: 26px; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.stat-card,
.panel {
    background: white;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

.stat-card span {
    display: block;
    color: var(--muted);
    margin-bottom: 8px;
}

.stat-card strong { font-size: 30px; }

.panel { margin-bottom: 20px; }

.page-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 18px;
}

.page-actions h2,
.page-actions p {
    margin-bottom: 4px;
}

.form-panel {
    max-width: 980px;
}

.narrow-panel {
    max-width: 620px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 18px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 24px;
}

.password-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.filters {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr auto;
    gap: 14px;
    align-items: end;
}

.filters label {
    margin-top: 0;
}

.filter-button {
    padding-bottom: 1px;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 900px;
}

.data-table th,
.data-table td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: middle;
}

.data-table th {
    background: #f7f9fb;
    color: #536576;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .3px;
}

.data-table td small {
    display: block;
    margin-top: 3px;
    color: var(--muted);
}

.actions-inline {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.actions-inline form {
    margin: 0;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 5px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
}

.badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-muted {
    background: #edf0f2;
    color: #66727e;
}

.badge-role {
    background: #eaf1f8;
    color: var(--primary);
}

.empty-state {
    text-align: center !important;
    color: var(--muted);
    padding: 28px !important;
}

@media (max-width: 1000px) {
    .filters {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 900px) {
    .app-shell { grid-template-columns: 1fr; }
    .sidebar { display: none; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 650px) {
    .form-grid,
    .filters {
        grid-template-columns: 1fr;
    }

    .page-actions,
    .topbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .user-box {
        text-align: left;
    }

    .user-links {
        justify-content: flex-start;
    }

    .form-actions {
        flex-direction: column-reverse;
    }

    .form-actions .btn {
        width: 100%;
    }
}

@media (max-width: 520px) {
    .stats-grid { grid-template-columns: 1fr; }
    .content { padding: 16px; }
}