:root {
    color-scheme: light;
    --bg: #f3f5f7;
    --surface: #ffffff;
    --surface-soft: #f8fafb;
    --text: #172026;
    --muted: #66727f;
    --line: #d9e0e7;
    --line-strong: #c3ccd5;
    --accent: #0f6b5f;
    --accent-dark: #0a4c44;
    --accent-soft: #e7f3f0;
    --info: #2457a6;
    --info-soft: #e8f2ff;
    --info-line: #b8d7ff;
    --warning: #b54708;
    --warning-soft: #fff4d6;
    --warning-line: #ffd16a;
    --danger: #b42318;
    --danger-soft: #fff0ed;
    --danger-line: #ffb4a8;
    --shadow: 0 14px 34px rgba(23, 32, 38, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background:
        linear-gradient(180deg, #eef4f2 0, rgba(238, 244, 242, 0) 260px),
        var(--bg);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.45;
}

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

button,
input,
select,
textarea {
    font: inherit;
}

.topbar {
    align-items: center;
    backdrop-filter: blur(14px);
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid var(--line);
    display: flex;
    gap: 24px;
    justify-content: space-between;
    min-height: 68px;
    padding: 0 clamp(16px, 4vw, 36px);
    position: sticky;
    top: 0;
    z-index: 20;
}

.brand {
    align-items: center;
    color: var(--accent-dark);
    display: inline-flex;
    gap: 10px;
    font-size: 18px;
    font-weight: 800;
    min-height: 44px;
    white-space: nowrap;
}

.brand img {
    display: block;
    height: 38px;
    object-fit: contain;
    width: 38px;
}

.brand span {
    line-height: 1;
}

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

.nav-toggle {
    display: none;
}

.topbar-actions {
    align-items: center;
    display: none;
    gap: 12px;
}

.mobile-notification {
    display: none;
}

.mobile-install {
    display: none;
}

.nav form {
    margin: 0;
}

.nav a,
.nav button,
.mobile-notification {
    align-items: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 999px;
    color: var(--text);
    cursor: pointer;
    display: inline-flex;
    gap: 7px;
    justify-content: center;
    min-height: 40px;
    padding: 9px 13px;
    position: relative;
}

.mobile-install[hidden] {
    display: none;
}

.nav a:hover,
.nav button:hover,
.mobile-notification:hover {
    background: var(--surface-soft);
    border-color: var(--line);
}

.button,
button {
    align-items: center;
    background: var(--accent);
    border: 0;
    border-radius: 8px;
    color: #ffffff;
    cursor: pointer;
    display: inline-flex;
    gap: 8px;
    font-weight: 700;
    justify-content: center;
    min-height: 42px;
    padding: 9px 14px;
}

.button.secondary {
    background: var(--surface-soft);
    border: 1px solid var(--line);
    color: var(--text);
}

.button.secondary:hover {
    background: #eef3f5;
}

.icon-sprite {
    display: none;
}

.icon {
    fill: none;
    height: 18px;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
    width: 18px;
}

.sr-only {
    clip: rect(0, 0, 0, 0);
    border: 0;
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

.badge-count {
    align-items: center;
    background: var(--danger);
    border-radius: 999px;
    color: #ffffff;
    display: inline-flex;
    font-size: 12px;
    font-weight: 800;
    height: 20px;
    justify-content: center;
    min-width: 20px;
    padding: 0 6px;
}

.badge-count.is-hidden {
    display: none;
}

button:hover,
.button:hover {
    background: var(--accent-dark);
}

.page {
    margin: 0 auto;
    max-width: none;
    padding: clamp(18px, 3vw, 34px);
    width: 100%;
}

.section-header {
    align-items: flex-start;
    display: flex;
    gap: 18px;
    justify-content: space-between;
    margin-bottom: 22px;
}

h1,
h2,
p {
    margin-top: 0;
}

h1 {
    font-size: clamp(26px, 4vw, 36px);
    letter-spacing: 0;
    line-height: 1.12;
    margin-bottom: 7px;
}

h2 {
    font-size: 18px;
    letter-spacing: 0;
    margin-bottom: 14px;
}

.section-header p,
.empty,
small {
    color: var(--muted);
}

.metrics {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    margin-bottom: 26px;
}

.metrics article,
.metric-card,
.panel,
.auth-panel,
.table,
.filters,
.form.wide {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 10px;
    box-shadow: 0 1px 0 rgba(23, 32, 38, 0.03);
}

.metrics article,
.metric-card {
    display: grid;
    gap: 8px;
    min-height: 118px;
    padding: 18px;
    transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.metric-card:hover {
    border-color: var(--line-strong);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.metrics span {
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.metrics strong {
    font-size: 34px;
    line-height: 1;
}

.anchor-target {
    scroll-margin-top: 92px;
}

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

.list {
    display: grid;
    gap: 10px;
}

.row {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 10px;
    display: grid;
    gap: 5px;
    padding: 14px;
    transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

a.row:hover,
.table-row:hover {
    border-color: var(--line-strong);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.row.unread {
    border-left: 5px solid var(--accent);
}

.row.event-danger,
.table-row.event-danger {
    background: var(--danger-soft);
    border-left: 5px solid var(--danger);
}

.row.event-warning,
.table-row.event-warning {
    background: var(--warning-soft);
    border-left: 5px solid var(--warning);
}

.row.event-info,
.table-row.event-info {
    background: var(--info-soft);
    border-left: 5px solid var(--info);
}

.panel {
    padding: clamp(16px, 3vw, 22px);
}

.quick-actions {
    margin-bottom: 24px;
}

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

.action-card {
    align-items: flex-start;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 10px;
    display: flex;
    gap: 12px;
    min-height: 104px;
    padding: 16px;
    transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.action-card:hover {
    border-color: var(--line-strong);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.action-card strong,
.action-card small {
    display: block;
}

.action-card strong {
    margin-bottom: 4px;
}

.action-icon {
    align-items: center;
    background: var(--accent-soft);
    border: 1px solid #cce5df;
    border-radius: 8px;
    color: var(--accent-dark);
    display: inline-flex;
    flex: 0 0 auto;
    height: 40px;
    justify-content: center;
    width: 40px;
}

.tabs {
    display: flex;
    gap: 8px;
    margin: 0 0 18px;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-width: thin;
}

.tabs a {
    background: rgba(255, 255, 255, 0.68);
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--muted);
    flex: 0 0 auto;
    font-weight: 700;
    min-height: 40px;
    padding: 9px 14px;
}

.tabs a.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
}

.filters {
    align-items: end;
    display: grid;
    gap: 12px;
    grid-template-columns: minmax(220px, 1fr) 220px auto;
    margin-bottom: 18px;
    padding: 14px;
}

input,
select,
textarea {
    background: #ffffff;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    color: var(--text);
    min-height: 42px;
    padding: 9px 11px;
    width: 100%;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(15, 107, 95, 0.14);
    outline: 0;
}

textarea {
    min-height: 116px;
    resize: vertical;
}

.table {
    overflow: hidden;
}

.datatable-controls {
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 10px;
    display: grid;
    gap: 12px;
    grid-template-columns: minmax(220px, 1fr) auto auto auto;
    margin-bottom: 12px;
    padding: 12px;
}

.datatable-search input {
    min-height: 40px;
}

.datatable-count {
    color: var(--muted);
    font-weight: 700;
    white-space: nowrap;
}

.datatable-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
}

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

.datatable-actions button,
.datatable-pagination button {
    min-height: 36px;
    padding: 7px 10px;
}

.datatable-pagination button:disabled {
    cursor: not-allowed;
    opacity: 0.45;
}

.datatable-page-size select {
    min-height: 40px;
}

.table-head,
.table-row {
    display: grid;
    gap: 12px;
    grid-template-columns: 2fr 1.2fr 1fr 120px;
    padding: 14px 16px;
}

.table-head {
    background: var(--surface-soft);
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
}

.table-head > span[role="button"] {
    cursor: pointer;
}

.table-head > span[aria-sort="ascending"]::after {
    content: " ↑";
}

.table-head > span[aria-sort="descending"]::after {
    content: " ↓";
}

.table-row {
    border-top: 1px solid var(--line);
    transition: background 0.16s ease, box-shadow 0.16s ease;
}

.event-grid {
    grid-template-columns: 180px 120px minmax(220px, 1fr) 110px 280px;
}

.vencimiento-grid {
    grid-template-columns: 180px minmax(220px, 1fr) minmax(160px, 1fr) 120px;
}

.assign-grid {
    grid-template-columns: 110px minmax(160px, 1fr) minmax(160px, 1fr) 170px 170px 80px;
}

.cause-grid {
    grid-template-columns: minmax(220px, 2fr) minmax(150px, 1.2fr) 120px minmax(130px, 1fr) 140px;
}

.audit-grid {
    grid-template-columns: 170px 120px 150px minmax(240px, 1fr) 220px;
}

.user-grid {
    grid-template-columns: minmax(120px, 0.9fr) minmax(170px, 1.1fr) minmax(180px, 1.2fr) minmax(170px, 1fr) 210px;
}

.student-grid {
    grid-template-columns: minmax(110px, 0.8fr) minmax(150px, 1fr) minmax(170px, 1.1fr) minmax(150px, 1fr) 150px 210px;
}

.solicitud-grid {
    grid-template-columns: 160px minmax(180px, 1.2fr) 120px 110px 140px minmax(200px, 1.3fr) 140px;
}

.inline-actions,
.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.text-link {
    color: var(--accent-dark);
    font-weight: 800;
    width: fit-content;
}

.inline-actions button {
    min-height: 34px;
    padding: 6px 10px;
}

mark {
    border-radius: 999px;
    color: #ffffff;
    font-weight: 800;
    padding: 4px 9px;
}

mark.danger {
    background: var(--danger);
}

mark.warning {
    background: var(--warning);
}

mark.event-danger {
    background: var(--danger);
}

mark.event-warning {
    background: var(--warning);
}

mark.event-info {
    background: var(--info);
}

mark.event-neutral {
    background: var(--muted);
}

dl {
    display: grid;
    gap: 9px 16px;
    grid-template-columns: 130px 1fr;
    margin: 0;
}

dt {
    color: var(--muted);
    font-weight: 700;
}

dd {
    margin: 0;
    min-width: 0;
    overflow-wrap: anywhere;
}

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

.form p {
    display: grid;
    gap: 6px;
    margin: 0;
}

.form label {
    color: var(--text);
    font-weight: 700;
}

.form .helptext {
    color: var(--muted);
    font-size: 13px;
}

.form ul.errorlist {
    color: var(--danger);
    margin: 0;
    padding-left: 18px;
}

.form.wide,
.auth-panel {
    padding: clamp(18px, 4vw, 24px);
}

.form.wide {
    max-width: 980px;
}

.compact {
    border-top: 1px solid var(--line);
    margin-top: 18px;
    padding-top: 18px;
}

.compact.first {
    border-top: 0;
    margin-bottom: 20px;
    margin-top: 0;
    padding-top: 0;
}

.auth-panel {
    margin: 48px auto;
    max-width: 430px;
}

.messages {
    background: var(--accent-soft);
    border: 1px solid #b9ded6;
    border-radius: 10px;
    margin-bottom: 18px;
    padding: 12px 16px;
}

.messages p {
    margin: 0;
}

.error-page {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 10px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 12px;
    margin: 56px auto;
    max-width: 620px;
    padding: clamp(22px, 5vw, 38px);
}

.error-page .error-code {
    color: var(--accent);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0;
    margin: 0;
    text-transform: uppercase;
}

.error-page h1 {
    margin-bottom: 0;
}

.error-page p {
    color: var(--muted);
    margin-bottom: 0;
}

.error-page form {
    margin: 0;
}

@media (max-width: 860px) {
    .topbar {
        align-items: stretch;
        display: grid;
        grid-template-columns: 1fr auto;
        gap: 10px;
        padding: 12px 14px;
    }

    .brand {
        min-height: 34px;
    }

    .brand img {
        height: 34px;
        width: 34px;
    }

    .topbar-actions {
        display: flex;
    }

    .nav-toggle,
    .mobile-notification {
        display: inline-flex;
        height: 40px;
        min-height: 38px;
        padding: 7px 12px;
        width: 44px;
    }

    .mobile-notification {
        color: var(--text);
        position: relative;
    }

    .nav {
        display: none;
        grid-column: 1 / -1;
        gap: 8px;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        justify-content: stretch;
    }

    .nav:not(.is-open) {
        display: none;
    }

    .nav.is-open {
        display: grid;
    }

    .nav a,
    .nav button {
        background: var(--surface-soft);
        border-color: var(--line);
        justify-content: center;
        text-align: center;
        width: 100%;
    }

    .nav .nav-notification {
        display: none;
    }

    .nav .mobile-install.is-available {
        display: inline-flex;
    }

    .section-header {
        display: grid;
    }

    .grid,
    .detail-grid,
    .filters,
    .datatable-controls {
        grid-template-columns: 1fr;
    }

    .datatable-actions,
    .datatable-pagination {
        justify-content: stretch;
    }

    .datatable-actions button,
    .datatable-pagination button {
        flex: 1 1 130px;
    }

    .table {
        background: transparent;
        border: 0;
        box-shadow: none;
    }

    .table-head {
        display: none;
    }

    .table-row,
    .event-grid,
    .vencimiento-grid,
    .assign-grid,
    .cause-grid,
    .audit-grid,
    .user-grid,
    .student-grid,
    .solicitud-grid {
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: 10px;
        display: grid;
        grid-template-columns: 1fr;
        margin-bottom: 10px;
    }

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

@media (max-width: 520px) {
    body {
        font-size: 14px;
    }

    .page {
        padding: 14px;
    }

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

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

    .metrics article,
    .metric-card {
        min-height: 104px;
        padding: 14px;
    }

    .metrics strong {
        font-size: 28px;
    }

    .panel,
    .row,
    .filters,
    .form.wide,
    .auth-panel {
        border-radius: 9px;
    }

    .button-row button,
    .inline-actions button {
        width: 100%;
    }
}