:root {
    --bg: #f4f7fb;
    --panel: #ffffff;
    --text: #1f2937;
    --muted: #667085;
    --line: #d9e2ec;
    --blue: #2563eb;
    --blue-soft: #dbeafe;
    --green: #15803d;
    --green-soft: #dcfce7;
    --orange: #c2410c;
    --orange-soft: #ffedd5;
    --danger: #b42318;
    --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 15px;
    letter-spacing: 0;
}

a {
    color: inherit;
    text-decoration: none;
}

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

.sidebar {
    background: #ffffff;
    border-right: 1px solid var(--line);
    padding: 18px;
}

.brand {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 22px;
}

.brand-mark,
.tile-icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: var(--blue);
    color: #ffffff;
    font-weight: 700;
    flex: 0 0 auto;
}

.brand strong,
.tile-content strong {
    display: block;
}

.brand small,
.tile-content small,
.metric-card small,
.topbar p,
.user-menu small,
.report-card small {
    display: block;
    color: var(--muted);
    margin-top: 3px;
}

.nav-list {
    display: grid;
    gap: 4px;
}

.nav-list a {
    padding: 10px 12px;
    border-radius: 8px;
    color: #344054;
}

.nav-list a.active,
.nav-list a:hover {
    background: var(--blue-soft);
    color: #174ea6;
}

.main {
    min-width: 0;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 24px;
    background: #ffffff;
    border-bottom: 1px solid var(--line);
}

.topbar h1,
.login-card h1 {
    margin: 0;
    font-size: 24px;
}

.topbar p {
    margin: 4px 0 0;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.content {
    padding: 24px;
}

.metric-grid,
.tile-grid,
.report-grid {
    display: grid;
    gap: 16px;
}

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

.tile-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric-card,
.module-tile,
.panel,
.report-card,
.login-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.metric-card {
    padding: 16px;
}

.metric-card span {
    color: var(--muted);
}

.metric-card strong {
    display: block;
    margin-top: 7px;
    font-size: 28px;
}

.module-tile {
    display: flex;
    align-items: center;
    gap: 14px;
    min-height: 118px;
    padding: 18px;
    border-left: 5px solid var(--blue);
}

.module-tile:hover,
.report-card:hover {
    transform: translateY(-1px);
    border-color: #9bbcfb;
}

.tile-green {
    border-left-color: var(--green);
}

.tile-green .tile-icon {
    background: var(--green);
}

.tile-orange {
    border-left-color: var(--orange);
}

.tile-orange .tile-icon {
    background: var(--orange);
}

.tile-content strong {
    font-size: 18px;
}

.panel {
    padding: 18px;
    margin-top: 18px;
}

.panel h2,
.section-heading h2 {
    margin: 0 0 14px;
    font-size: 18px;
}

.section-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 14px;
    border: 1px solid var(--blue);
    border-radius: 8px;
    background: var(--blue);
    color: #ffffff;
    font-weight: 700;
    cursor: pointer;
}

.button-light {
    background: #ffffff;
    color: var(--blue);
}

.button-wide {
    width: 100%;
}

.action-row {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: 8px;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 760px;
    background: #ffffff;
}

th,
td {
    padding: 11px 12px;
    text-align: left;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}

th {
    background: #eef4ff;
    color: #344054;
    font-size: 13px;
}

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

.filter-bar,
.inline-form,
.grid-form {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: end;
    margin-bottom: 16px;
}

.filter-bar.compact {
    margin-top: -4px;
}

.grid-form {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: end;
}

label {
    display: grid;
    gap: 5px;
    color: #344054;
    font-weight: 700;
}

input,
select {
    min-height: 40px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 8px 10px;
    font: inherit;
    background: #ffffff;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 40px;
}

.checkbox-label input {
    min-height: auto;
}

.alert-stack {
    display: grid;
    gap: 10px;
    margin-bottom: 16px;
}

.alert {
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: #ffffff;
}

.alert-warning {
    border-color: #fdba74;
    background: var(--orange-soft);
    color: #7c2d12;
}

.alert-success {
    border-color: #86efac;
    background: var(--green-soft);
    color: #14532d;
}

.alert-notice {
    border-color: #bfdbfe;
    background: var(--blue-soft);
    color: #1e3a8a;
}

.empty-state {
    padding: 24px;
    border: 1px dashed #b6c3d1;
    border-radius: 8px;
    color: var(--muted);
    background: #ffffff;
}

.report-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.report-card {
    padding: 16px;
}

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

.login-panel {
    width: min(460px, 100%);
}

.login-card {
    padding: 24px;
}

.login-brand {
    margin-bottom: 20px;
}

.stacked-form {
    display: grid;
    gap: 14px;
}

@media (max-width: 1180px) {
    .metric-grid,
    .tile-grid,
    .report-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 820px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

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

    .topbar,
    .user-menu {
        align-items: flex-start;
        justify-content: flex-start;
    }

    .topbar {
        flex-direction: column;
    }

    .content {
        padding: 16px;
    }

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

@media (max-width: 560px) {
    .metric-grid,
    .tile-grid,
    .report-grid {
        grid-template-columns: 1fr;
    }

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

    .filter-bar,
    .inline-form {
        display: grid;
        grid-template-columns: 1fr;
    }

    .button {
        width: 100%;
    }
}