:root {
    --bg: #f3f4f6;
    --card: #ffffff;
    --line: #d1d5db;
    --text: #111827;
    --muted: #6b7280;
    --primary: #0f766e;
    --danger: #b91c1c;
    --success-bg: #dcfce7;
    --success-text: #166534;
    --error-bg: #fee2e2;
    --error-text: #991b1b;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
}

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1rem;
}

.auth-card {
    width: min(420px, 100%);
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 1.25rem;
}

.subtitle {
    margin-top: 0.25rem;
    color: var(--muted);
}

.topbar {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--card);
    border-bottom: 1px solid var(--line);
}

.topbar h1 {
    margin: 0;
    font-size: 1.35rem;
}

.topbar p {
    margin: 0.2rem 0 0;
    color: var(--muted);
}

.top-actions {
    display: flex;
    gap: 0.6rem;
    align-items: center;
}

.container {
    padding: 1rem 1.25rem 1.75rem;
}

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.card h2 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

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

.charts .card {
    min-height: unset;
}

.chart-box {
    position: relative;
    height: 340px;
    max-height: 340px;
}

.chart-box canvas {
    width: 100% !important;
    height: 100% !important;
}

.tables {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

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

table {
    border-collapse: collapse;
    width: 100%;
    min-width: 0;
    table-layout: auto;
}

th,
td {
    border-bottom: 1px solid #e5e7eb;
    padding: 0.5rem 0.45rem;
    text-align: left;
    font-size: 0.88rem;
    white-space: normal;
    word-break: break-word;
}

th {
    background: #f9fafb;
    position: static;
}

.form-grid {
    display: grid;
    gap: 0.6rem;
}

.form-grid.two-cols {
    grid-template-columns: 160px 1fr;
}

label {
    font-weight: 600;
    font-size: 0.9rem;
}

input,
select,
button,
.btn {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0.6rem 0.7rem;
    font-size: 0.92rem;
}

button,
.btn {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

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

.btn.small {
    padding: 0.35rem 0.55rem;
    font-size: 0.82rem;
}

.flash {
    padding: 0.7rem 0.8rem;
    border-radius: 8px;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
}

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

.flash.error {
    background: var(--error-bg);
    color: var(--error-text);
}

.dataTables_wrapper {
    width: 100%;
    overflow-x: hidden;
}

.dataTables_wrapper .dataTables_length {
    margin-bottom: 0.5rem;
}

.dataTables_wrapper .dataTables_filter {
    margin-bottom: 0.5rem;
}

.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter {
    float: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.dataTables_wrapper .dt-buttons {
    float: none;
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.dataTables_wrapper .dataTables_filter {
    float: right;
}

.dataTables_wrapper .dt-buttons {
    margin-bottom: 0.6rem;
}

.dataTables_wrapper .dt-buttons .dt-button {
    border-radius: 6px;
    border: 1px solid var(--line);
    background: #ffffff;
    color: var(--text);
    padding: 0.35rem 0.55rem;
}

.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select {
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 0.25rem 0.35rem;
}

table.dataTable thead th,
table.dataTable tbody td {
    padding: 0.5rem 0.6rem;
    vertical-align: middle;
}

table.dataTable {
    width: 100% !important;
}

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

    .chart-box {
        height: 300px;
        max-height: 300px;
    }

    .dataTables_wrapper .dataTables_filter {
        float: none;
        display: inline-flex;
    }
}

@media (max-width: 640px) {
    .topbar {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .chart-box {
        height: 240px;
        max-height: 240px;
    }
}