:root {
    --bg: #eef2f5;
    --panel: #ffffff;
    --panel-soft: #f7f9fb;
    --text: #1d2b36;
    --muted: #647481;
    --border: #d8e0e6;
    --primary: #005c8f;
    --primary-dark: #01466d;
    --success: #1f8a5b;
    --warning: #a26912;
    --danger: #b43d33;
    --shadow: 0 10px 30px rgba(6, 34, 54, 0.08);
    --radius: 14px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text);
    background: linear-gradient(180deg, #f4f7fa 0%, #eaf0f4 100%);
}

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

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
}

.sidebar {
    background: #123147;
    color: #f2f7fb;
    padding: 28px 18px;
    position: sticky;
    top: 0;
    height: 100vh;
}

.brand a {
    color: #ffffff;
    font-size: 1.45rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.sidebar-nav {
    display: grid;
    gap: 8px;
    margin-top: 28px;
}

.nav-link {
    color: rgba(255, 255, 255, 0.78);
    padding: 12px 14px;
    border-radius: 12px;
    transition: 0.18s ease;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
}

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

.topbar {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: center;
    padding: 28px 32px 0;
}

.topbar h1 {
    margin: 0;
    font-size: 1.8rem;
}

.page-intro {
    margin: 6px 0 0;
    color: var(--muted);
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-meta {
    display: grid;
    text-align: right;
}

.user-meta span {
    color: var(--muted);
    font-size: 0.92rem;
}

.content {
    padding: 28px 32px 40px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card,
.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.stat-card {
    padding: 20px;
    display: grid;
    gap: 8px;
    border-top: 4px solid var(--primary);
}

.stat-card.success {
    border-top-color: var(--success);
}

.stat-card.warning {
    border-top-color: var(--warning);
}

.stat-card.danger {
    border-top-color: var(--danger);
}

.stat-label,
.stat-footnote {
    color: var(--muted);
}

.stat-value {
    font-size: 2rem;
    line-height: 1;
}

.stat-value-small {
    font-size: 1.2rem;
}

.card {
    margin-bottom: 24px;
    overflow: hidden;
}

.card-header {
    padding: 22px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbfd 100%);
    border-bottom: 1px solid var(--border);
}

.card-header h2 {
    margin: 0 0 4px;
    font-size: 1.15rem;
}

.card-header p {
    margin: 0;
    color: var(--muted);
}

.table-wrap {
    overflow-x: auto;
}

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

.data-table th,
.data-table td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
    text-align: left;
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.cell-subtitle {
    margin-top: 4px;
    color: var(--muted);
    font-size: 0.9rem;
}

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

.badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 6px 10px;
    font-size: 0.82rem;
    font-weight: 600;
}

.badge-success {
    background: #e6f5ee;
    color: var(--success);
}

.badge-danger {
    background: #f9e8e6;
    color: var(--danger);
}

.badge-warning {
    background: #fff2de;
    color: var(--warning);
}

.badge-secondary {
    background: #edf2f6;
    color: var(--muted);
}

.button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 11px 16px;
    border-radius: 10px;
    border: 1px solid var(--primary);
    background: var(--primary);
    color: #ffffff;
    font-weight: 600;
    cursor: pointer;
}

.button:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

.button-secondary {
    background: var(--panel);
    color: var(--primary);
}

.button-secondary:hover {
    background: #eef5fb;
}

.field {
    display: grid;
    gap: 8px;
}

.field span {
    font-size: 0.92rem;
    color: var(--muted);
}

.field input,
.field select {
    width: 100%;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 10px;
    padding: 12px 14px;
    font: inherit;
    color: var(--text);
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    padding: 24px;
}

.filter-actions {
    display: flex;
    align-items: end;
    gap: 12px;
}

.settings-list {
    display: grid;
    gap: 1px;
    background: var(--border);
}

.setting-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 24px;
    background: var(--panel);
}

.table-link {
    font-weight: 600;
}

.alert {
    border-radius: 12px;
    padding: 14px 16px;
    margin-bottom: 18px;
}

.alert-danger {
    background: #f9e8e6;
    color: #7f2018;
}

.login-body {
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(0, 92, 143, 0.18), transparent 32%),
        linear-gradient(180deg, #f2f7fb 0%, #e7eef3 100%);
}

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

.login-card {
    width: min(100%, 420px);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(216, 224, 230, 0.9);
    box-shadow: var(--shadow);
    border-radius: 24px;
    padding: 32px;
}

.login-brand h1 {
    margin: 0 0 6px;
}

.login-brand p {
    margin: 0 0 24px;
    color: var(--muted);
}

.stack {
    display: grid;
    gap: 16px;
}

.full-width {
    width: 100%;
}

.menu-toggle {
    display: none;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    padding: 24px;
}

.full-span {
    grid-column: 1 / -1;
}

.form-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.checkbox-field {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 48px;
}

.checkbox-field input {
    width: auto;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
}

.checkbox-card {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--panel-soft);
}

.checkbox-card input {
    width: auto;
    margin-top: 3px;
}

.checkbox-card span {
    display: grid;
}

.checkbox-card small {
    color: var(--muted);
}

.table-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.inline-form {
    margin: 0;
}

.text-button {
    background: none;
    border: none;
    padding: 0;
    color: var(--primary);
    cursor: pointer;
    font: inherit;
    font-weight: 600;
}

.text-danger {
    color: var(--danger);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    padding: 24px;
}

.detail-grid p {
    margin: 6px 0 0;
    color: var(--muted);
}

.muted-note {
    color: var(--muted);
    margin: 0;
}

@media (max-width: 980px) {
    .filters-grid {
        grid-template-columns: 1fr 1fr;
    }

    .form-grid,
    .detail-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 860px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        width: 260px;
        transform: translateX(-100%);
        transition: transform 0.2s ease;
        z-index: 10;
    }

    .sidebar.is-open {
        transform: translateX(0);
    }

    .menu-toggle {
        display: inline-flex;
        border: 1px solid var(--border);
        background: var(--panel);
        border-radius: 10px;
        padding: 10px 12px;
    }

    .topbar,
    .content {
        padding-left: 18px;
        padding-right: 18px;
    }
}

@media (max-width: 640px) {
    .topbar {
        flex-wrap: wrap;
    }

    .topbar-user {
        width: 100%;
        justify-content: space-between;
    }

    .filters-grid {
        grid-template-columns: 1fr;
    }

    .filter-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .data-table th,
    .data-table td {
        padding: 14px 16px;
    }

    .setting-row {
        flex-direction: column;
    }
}