:root {
    --bg: #f5f7fb;
    --surface: #ffffff;
    --surface-2: #f9fafb;
    --line: #d9e0ea;
    --text: #172033;
    --muted: #64748b;
    --primary: #1457d9;
    --primary-dark: #0f3f9e;
    --green: #16803a;
    --yellow: #b7791f;
    --red: #c62828;
    --blocked: #7f1d1d;
    --radius: 8px;
    --shadow: 0 10px 30px rgba(15, 23, 42, .08);
}

* {
    box-sizing: border-box;
}

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

body.has-modal {
    overflow: hidden;
}

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

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

.sidebar {
    background: #101828;
    color: #f8fafc;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 18px;
    border-bottom: 1px solid rgba(255,255,255,.12);
}

.brand-mark {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: var(--radius);
    background: #ffffff;
    color: #101828;
    font-weight: 800;
}

.brand small,
.sidebar-note span,
.eyebrow {
    display: block;
    color: #94a3b8;
    font-size: 12px;
}

.main-nav {
    display: grid;
    gap: 6px;
}

.main-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 12px;
    border-radius: var(--radius);
    color: #cbd5e1;
}

.main-nav a.active,
.main-nav a:hover {
    background: #1d2939;
    color: #ffffff;
}

.main-nav i {
    width: 18px;
    text-align: center;
}

.sidebar-note {
    margin-top: auto;
    padding: 14px;
    border-radius: var(--radius);
    background: rgba(255,255,255,.08);
    line-height: 1.45;
}

.main {
    min-width: 0;
    padding: 24px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.topbar h1 {
    margin: 4px 0 0;
    font-size: 26px;
    letter-spacing: 0;
}

.top-actions,
.actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.btn,
button.btn {
    min-height: 38px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    padding: 9px 13px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 700;
    font-size: 14px;
}

.btn.primary {
    background: var(--primary);
    color: #ffffff;
}

.btn.primary:hover {
    background: var(--primary-dark);
}

.btn.secondary {
    background: #ffffff;
    color: var(--text);
    border-color: var(--line);
}

.btn.danger {
    background: #fee2e2;
    color: var(--red);
}

.flash {
    padding: 12px 14px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    border: 1px solid var(--line);
    background: #ffffff;
}

.flash.success {
    border-color: #bbf7d0;
    color: var(--green);
}

.grid {
    display: grid;
    gap: 16px;
}

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

.grid.cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.panel,
.metric,
.form-section {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.panel {
    padding: 16px;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
}

.panel-header h2,
.form-section h2 {
    margin: 0;
    font-size: 17px;
}

.metric {
    padding: 16px;
}

.metric span {
    display: block;
    color: var(--muted);
    font-size: 13px;
}

.metric strong {
    display: block;
    margin-top: 8px;
    font-size: 28px;
}

.table-wrap {
    overflow-x: auto;
}

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

th,
td {
    padding: 11px 10px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0;
    background: var(--surface-2);
}

tr:hover td {
    background: #fbfdff;
}

.pill,
.semaforo {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    white-space: nowrap;
}

.semaforo.is-green {
    background: #dcfce7;
    color: var(--green);
}

.semaforo.is-yellow {
    background: #fef3c7;
    color: var(--yellow);
}

.semaforo.is-red {
    background: #fee2e2;
    color: var(--red);
}

.semaforo.is-blocked {
    background: #fecaca;
    color: var(--blocked);
}

.semaforo.is-muted,
.pill {
    background: #eef2f7;
    color: #475569;
}

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

.filters,
.inline-form {
    display: flex;
    gap: 10px;
    align-items: end;
    flex-wrap: wrap;
}

.field {
    display: grid;
    gap: 6px;
}

.field label {
    color: #334155;
    font-size: 13px;
    font-weight: 700;
}

input,
select,
textarea {
    width: 100%;
    min-height: 38px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 8px 10px;
    background: #ffffff;
    color: var(--text);
    font: inherit;
}

input[type="checkbox"] {
    width: auto;
    min-height: auto;
}

textarea {
    min-height: 92px;
    resize: vertical;
}

.form-section {
    padding: 16px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.field.span-2 {
    grid-column: span 2;
}

.field.span-3 {
    grid-column: span 3;
}

.detail-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 16px;
    align-items: start;
}

.detail-title h2 {
    margin: 0 0 6px;
    font-size: 24px;
}

.summary-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-top: 14px;
}

.summary-item {
    padding: 12px;
    background: var(--surface-2);
    border-radius: var(--radius);
    border: 1px solid var(--line);
}

.summary-item span {
    display: block;
    color: var(--muted);
    font-size: 12px;
    margin-bottom: 5px;
}

.tabs {
    display: flex;
    gap: 8px;
    margin: 16px 0;
    flex-wrap: wrap;
}

.tab-button {
    border: 1px solid var(--line);
    background: #ffffff;
    border-radius: var(--radius);
    padding: 8px 11px;
    font-weight: 700;
    cursor: pointer;
}

.tab-button.active {
    background: #101828;
    color: #ffffff;
    border-color: #101828;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.kanban {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(280px, 1fr);
    gap: 14px;
    overflow-x: auto;
    padding-bottom: 10px;
}

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

.kanban-toolbar h2 {
    margin: 0 0 4px;
    font-size: 17px;
}

.kanban-toolbar p {
    margin: 0;
}

.kanban-status {
    min-height: 34px;
    min-width: min(360px, 100%);
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    color: var(--muted);
    font-weight: 700;
}

.kanban-status.success {
    color: var(--green);
}

.kanban-status.error {
    color: var(--red);
}

.kanban-status.info {
    color: var(--primary);
}

.kanban-column {
    background: #eef2f7;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    min-height: 520px;
    display: flex;
    flex-direction: column;
}

.kanban-head {
    padding: 12px;
    border-bottom: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 800;
    gap: 10px;
}

.kanban-head > div {
    display: grid;
    gap: 8px;
    min-width: 0;
}

.kanban-status-select {
    min-height: 32px;
    max-width: 210px;
    padding: 5px 8px;
    font-size: 12px;
    font-weight: 700;
}

.kanban-cards {
    display: grid;
    gap: 10px;
    padding: 10px;
    align-content: start;
    min-height: 430px;
    transition: background-color .16s ease, outline-color .16s ease;
}

.kanban-cards.is-drop-target {
    background: #dbeafe;
    outline: 2px dashed #60a5fa;
    outline-offset: -6px;
}

.kanban-card {
    background: #ffffff;
    border: 1px solid var(--line);
    border-left: 5px solid var(--primary);
    border-radius: var(--radius);
    padding: 11px;
    display: grid;
    gap: 8px;
    cursor: grab;
    transition: opacity .16s ease, transform .16s ease, box-shadow .16s ease;
}

.kanban-card:active {
    cursor: grabbing;
}

.kanban-card.is-dragging {
    opacity: .45;
    transform: scale(.99);
}

.kanban-card.is-saving {
    pointer-events: none;
    opacity: .65;
    box-shadow: inset 0 0 0 2px #bfdbfe;
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: grid;
    place-items: center;
    padding: 18px;
    background: rgba(15, 23, 42, .48);
}

.modal-backdrop[hidden] {
    display: none;
}

.modal-panel {
    width: min(460px, 100%);
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 24px 60px rgba(15, 23, 42, .26);
    padding: 16px;
}

.modal-panel .panel-header {
    margin-bottom: 16px;
}

.modal-panel .panel-header p {
    margin: 4px 0 0;
}

.modal-actions {
    justify-content: flex-end;
    margin-top: 16px;
}

.card-title {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    font-weight: 800;
}

.card-meta {
    display: grid;
    gap: 4px;
    color: var(--muted);
    font-size: 13px;
}

.empty-state {
    min-height: 260px;
    display: grid;
    place-items: center;
    text-align: center;
    gap: 8px;
    color: var(--muted);
}

.empty-state i {
    font-size: 34px;
    color: #94a3b8;
}

@media (max-width: 1080px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .main-nav {
        grid-template-columns: repeat(5, minmax(0, 1fr));
    }

    .sidebar-note {
        display: none;
    }

    .grid.cols-4,
    .grid.cols-3,
    .summary-list,
    .form-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .main {
        padding: 14px;
    }

    .topbar,
    .detail-hero,
    .kanban-toolbar {
        grid-template-columns: 1fr;
        display: grid;
    }

    .kanban-status {
        justify-content: flex-start;
    }

    .main-nav,
    .grid.cols-2,
    .grid.cols-3,
    .grid.cols-4,
    .summary-list,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .field.span-2,
    .field.span-3 {
        grid-column: auto;
    }
}