:root {
    --nav: #174a78;
    --nav-dark: #12395e;
    --accent: #2e8bc0;
    --accent-soft: #eaf4fb;
    --bg: #f5f8fb;
    --surface: #ffffff;
    --surface-soft: #f8fafc;
    --border: #e2e8f0;
    --border-strong: #cbd5e1;
    --text: #243447;
    --text-strong: #17212b;
    --muted: #64748b;
    --success: #1f8a5b;
    --success-soft: #e8f7ef;
    --warning: #d97706;
    --warning-soft: #fff7e8;
    --danger: #c0392b;
    --danger-soft: #fdecea;
    --info: #2563eb;
    --info-soft: #eaf2ff;
    --shadow-sm: 0 4px 14px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 12px 30px rgba(15, 23, 42, 0.09);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --transition: 0.2s ease;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
}

body {
    min-height: 100%;
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.55 Arial, Helvetica, sans-serif;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a {
    color: var(--accent);
    transition: color var(--transition), background-color var(--transition), border-color var(--transition), transform var(--transition);
}

a:hover {
    color: var(--nav-dark);
}

img {
    max-width: 100%;
    height: auto;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 14px 4vw;
    background: linear-gradient(90deg, var(--nav-dark), var(--nav));
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 18px rgba(18, 57, 94, 0.16);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 0.02em;
    text-decoration: none;
    white-space: nowrap;
}

.brand:hover {
    color: #fff;
}

.brand::before {
    content: "";
    width: 11px;
    height: 32px;
    border-radius: 999px;
    background: linear-gradient(180deg, #66c2ff, #2e8bc0);
    box-shadow: 0 0 0 4px rgba(102, 194, 255, 0.14);
}

.topbar nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
}

.topbar nav a {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 8px 12px;
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.92);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.topbar nav a:hover,
.topbar nav a:focus {
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
}

.container {
    width: min(1240px, 92vw);
    min-height: calc(100vh - 160px);
    margin: 28px auto;
}

footer {
    padding: 26px 4vw;
    color: var(--muted);
    text-align: center;
    font-size: 13px;
}

h1,
h2,
h3,
h4 {
    margin-top: 0;
    color: var(--text-strong);
    line-height: 1.25;
}

h1 {
    margin-bottom: 10px;
    font-size: clamp(28px, 3vw, 38px);
}

h2 {
    margin-bottom: 12px;
    font-size: 24px;
}

h3 {
    margin-bottom: 10px;
    font-size: 18px;
}

p {
    margin-top: 0;
}

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

.card,
.module-card,
.system-card,
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.card {
    padding: 24px;
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.login {
    width: min(480px, 100%);
    margin: 56px auto;
    padding: 30px;
}

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

.page-head h1,
.page-head h2 {
    margin-bottom: 4px;
}

.two-col,
.detail-grid {
    display: grid;
    grid-template-columns: minmax(300px, 0.72fr) minmax(520px, 1.28fr);
    gap: 22px;
    align-items: start;
}

.grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

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

.wide {
    grid-column: 1 / -1;
}

label {
    display: block;
    margin: 14px 0;
    color: var(--text-strong);
    font-weight: 700;
}

input,
select,
textarea {
    width: 100%;
    margin-top: 6px;
    padding: 11px 12px;
    background: #fff;
    color: var(--text);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    font: inherit;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(46, 139, 192, 0.15);
}

input:disabled,
select:disabled,
textarea:disabled {
    background: #eef2f7;
    color: #94a3b8;
    cursor: not-allowed;
}

button,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-height: 42px;
    padding: 10px 16px;
    background: var(--nav);
    color: #fff;
    border: 1px solid var(--nav);
    border-radius: 9px;
    font: inherit;
    font-weight: 800;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: transform var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

button:hover,
.btn:hover {
    color: #fff;
    background: var(--nav-dark);
    border-color: var(--nav-dark);
    box-shadow: 0 8px 18px rgba(23, 74, 120, 0.18);
    transform: translateY(-1px);
}

button:active,
.btn:active {
    transform: translateY(0);
}

.btn.secondary,
button.secondary {
    background: #64748b;
    border-color: #64748b;
}

.btn.secondary:hover,
button.secondary:hover {
    background: #475569;
    border-color: #475569;
}

.btn.success,
button.success {
    background: var(--success);
    border-color: var(--success);
}

.btn.warning,
button.warning {
    background: var(--warning);
    border-color: var(--warning);
}

.btn.danger,
button.danger {
    background: var(--danger);
    border-color: var(--danger);
}

.btn.outline,
button.outline {
    background: transparent;
    color: var(--nav);
    border-color: var(--nav);
}

.btn.outline:hover,
button.outline:hover {
    background: var(--accent-soft);
    color: var(--nav-dark);
}

.btn.small,
button.small {
    min-height: 34px;
    padding: 7px 10px;
    border-radius: 7px;
    font-size: 13px;
}

.alert {
    margin: 0 0 18px;
    padding: 13px 15px;
    border: 1px solid transparent;
    border-radius: 10px;
    font-weight: 700;
}

.alert.error {
    background: var(--danger-soft);
    color: var(--danger);
    border-color: #f2c6c1;
}

.alert.success {
    background: var(--success-soft);
    color: var(--success);
    border-color: #c9ead8;
}

.alert.warning {
    background: var(--warning-soft);
    color: var(--warning);
    border-color: #f7dfb2;
}

.alert.info {
    background: var(--info-soft);
    color: var(--info);
    border-color: #cddcff;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 9px;
    border-radius: 999px;
    background: #e2e8f0;
    color: #475569;
    font-size: 12px;
    font-weight: 800;
}

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

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

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

.badge.info {
    background: var(--info-soft);
    color: var(--info);
}

.module-card {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(360px, 2fr) auto;
    align-items: center;
    gap: 26px;
    padding: 26px;
    border-left: 6px solid var(--accent);
}

.eyebrow {
    display: inline-block;
    margin-bottom: 6px;
    color: var(--accent);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.stats > div {
    min-width: 0;
    padding: 16px;
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: 12px;
    text-align: center;
}

.stats strong {
    display: block;
    margin-bottom: 5px;
    color: var(--text-strong);
    font-size: 28px;
    line-height: 1;
}

.stats span {
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

.toolbar {
    display: grid;
    grid-template-columns: minmax(240px, 1fr) 220px auto;
    gap: 10px;
    align-items: end;
    margin-bottom: 18px;
}

.table-wrap {
    overflow: auto;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
}

th,
td {
    padding: 12px 13px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: middle;
    white-space: nowrap;
}

th {
    background: #edf4f9;
    color: var(--nav-dark);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.02em;
}

tbody tr {
    transition: background-color var(--transition);
}

tbody tr:nth-child(even) {
    background: #fbfdff;
}

tbody tr:hover {
    background: #eef6fc;
}

tbody tr:last-child td {
    border-bottom: 0;
}

.overdue td {
    background: #fff5f2;
}

.complete td {
    color: #6b7280;
    background: #f8fbf9;
}

dl {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 10px 16px;
    margin: 0;
}

dt {
    color: var(--text-strong);
    font-weight: 800;
}

dd {
    margin: 0;
    color: var(--text);
}

hr {
    border: 0;
    border-top: 1px solid var(--border);
    margin: 24px 0;
}

.empty-state {
    padding: 34px 24px;
    color: var(--muted);
    text-align: center;
    border: 1px dashed var(--border-strong);
    border-radius: 12px;
    background: var(--surface-soft);
}

.actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

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

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

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

@media (max-width: 850px) {
    .topbar {
        position: static;
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
    }

    .topbar nav {
        justify-content: flex-start;
    }

    .page-head {
        align-items: flex-start;
        flex-direction: column;
    }

    .stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

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

    .wide {
        grid-column: auto;
    }
}

@media (max-width: 560px) {
    .container {
        width: min(94vw, 100%);
        margin: 18px auto;
    }

    .card,
    .module-card,
    .login {
        padding: 20px;
        border-radius: 14px;
    }

    .brand {
        font-size: 21px;
    }

    .topbar nav {
        width: 100%;
        gap: 6px;
    }

    .topbar nav a {
        padding: 7px 9px;
        font-size: 13px;
    }

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

    dl {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    dd {
        margin-bottom: 10px;
    }

    button,
    .btn {
        width: 100%;
    }

    .actions button,
    .actions .btn,
    td button,
    td .btn {
        width: auto;
    }
}