* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: #f5f7fb;
    color: #172033;
}

a {
    color: inherit;
}

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

.login-panel {
    width: min(420px, 100%);
    background: #ffffff;
    border: 1px solid #d8dee9;
    border-radius: 8px;
    padding: 28px;
    box-shadow: 0 16px 40px rgba(23, 32, 51, 0.10);
}

.login-panel h1 {
    margin: 0 0 6px;
    font-size: 26px;
}

.login-panel label {
    display: grid;
    gap: 7px;
    margin-top: 18px;
    font-weight: 700;
    color: #334155;
}

input,
button {
    font: inherit;
}

input {
    width: 100%;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 10px 12px;
    background: #ffffff;
    color: #172033;
}

button,
.tab,
.topbar a {
    border: 0;
    border-radius: 6px;
    padding: 10px 14px;
    background: #2563eb;
    color: #ffffff;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

button:hover,
.tab:hover,
.topbar a:hover {
    background: #1d4ed8;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 18px 28px;
    background: #101827;
    color: #ffffff;
}

.topbar h1 {
    margin: 0;
    font-size: 22px;
}

.topbar span {
    color: #cbd5e1;
}

.topbar nav {
    display: flex;
    align-items: center;
    gap: 12px;
}

.page {
    width: min(1440px, 100%);
    margin: 0 auto;
    padding: 24px;
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.tabs,
.date-form,
.admin-form {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.tab {
    background: #ffffff;
    color: #334155;
    border: 1px solid #d8dee9;
}

.tab.active {
    background: #2563eb;
    border-color: #2563eb;
    color: #ffffff;
}

.metrics {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 18px;
}

.metrics article,
.panel,
.admin-tools {
    background: #ffffff;
    border: 1px solid #d8dee9;
    border-radius: 8px;
    box-shadow: 0 8px 26px rgba(23, 32, 51, 0.06);
}

.metrics article {
    padding: 18px;
}

.metrics span {
    display: block;
    color: #64748b;
    font-weight: 700;
    margin-bottom: 8px;
}

.metrics strong {
    font-size: 30px;
    color: #0f766e;
}

.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-bottom: 18px;
}

.panel {
    margin-bottom: 18px;
    overflow: hidden;
}

.panel-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 15px 18px;
    border-bottom: 1px solid #e2e8f0;
    background: #fbfcfe;
}

.panel-heading h2 {
    margin: 0;
    font-size: 18px;
}

.panel-heading span {
    color: #64748b;
    font-weight: 700;
}

.table-wrap {
    max-height: 440px;
    overflow: auto;
}

.table-wrap.compact {
    max-height: 320px;
}

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

th,
td {
    text-align: left;
    padding: 11px 12px;
    border-bottom: 1px solid #e2e8f0;
    white-space: nowrap;
}

th {
    position: sticky;
    top: 0;
    z-index: 1;
    background: #eef2f7;
    color: #334155;
    font-size: 13px;
    text-transform: uppercase;
}

tr:hover td {
    background: #f8fafc;
}

.empty,
.muted {
    color: #64748b;
}

.error {
    color: #b91c1c;
    background: #fee2e2;
    border-radius: 6px;
    padding: 10px 12px;
}

.notice {
    color: #166534;
    background: #dcfce7;
    border-radius: 6px;
    padding: 10px 12px;
}

.admin-tools {
    padding: 12px 16px;
    margin-bottom: 18px;
}

.admin-tools summary {
    cursor: pointer;
    font-weight: 800;
    color: #334155;
}

.admin-form {
    margin-top: 12px;
}

code {
    background: #e2e8f0;
    border-radius: 4px;
    padding: 2px 5px;
}

@media (max-width: 920px) {
    .topbar,
    .toolbar {
        align-items: stretch;
        flex-direction: column;
    }

    .metrics,
    .split {
        grid-template-columns: 1fr;
    }

    .date-form input,
    .date-form button {
        width: 100%;
    }
}