:root {
    --color-bg: #f4f6f8;
    --color-panel: #ffffff;
    --color-border: #e2e5e9;
    --color-text: #1f2937;
    --color-muted: #6b7280;
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-soft: #eef2ff;
    --color-danger: #dc2626;
    --color-success-bg: #dcfce7;
    --color-success-text: #166534;
    --color-error-bg: #fee2e2;
    --color-error-text: #991b1b;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 6px 20px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
}

.topbar {
    background: var(--color-panel);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 10;
}
.topbar-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}
.brand {
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
    color: var(--color-text);
}
.topbar nav { display: flex; align-items: center; gap: 20px; }
.topbar nav a {
    text-decoration: none;
    color: var(--color-muted);
    font-size: 0.95rem;
    padding: 4px 2px;
    border-bottom: 2px solid transparent;
    transition: color 0.15s ease, border-color 0.15s ease;
}
.topbar nav a:hover { color: var(--color-text); }
.topbar nav a.active { color: var(--color-text); border-bottom-color: var(--color-primary); font-weight: 600; }
.btn-nav {
    background: var(--color-primary);
    color: #fff !important;
    padding: 7px 14px;
    border-radius: var(--radius);
    border-bottom-color: transparent !important;
    box-shadow: var(--shadow-sm);
    transition: background 0.15s ease, transform 0.05s ease;
}
.btn-nav:hover { background: var(--color-primary-dark); }
.btn-nav:active { transform: translateY(1px); }

/* The topbar has its own inner max-width; only the page container widens. */
.container { max-width: 1000px; margin: 0 auto; padding: 24px 20px 60px; }
.container-wide { max-width: 1360px; }

h1 { margin: 0 0 6px; }
h3 { margin-bottom: 8px; }
.subtitle { color: var(--color-muted); margin-top: 0; }

.page-head { margin-bottom: 20px; }

.panel {
    background: var(--color-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 20px;
    margin-bottom: 20px;
}
.panel h2 { margin-top: 0; font-size: 1.1rem; }
.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
    gap: 10px;
    flex-wrap: wrap;
}

.detalle-cabecera { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; }

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 14px;
    margin: 20px 0 30px;
}
.card {
    background: var(--color-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 18px;
    text-decoration: none;
    color: var(--color-text);
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: box-shadow 0.15s ease, transform 0.15s ease;
}
a.card:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.card-number { font-size: 1.8rem; font-weight: 700; }
.card-label { color: var(--color-muted); font-size: 0.9rem; }

.steps { background: var(--color-panel); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 20px; }
.steps ol { padding-left: 20px; line-height: 1.8; }

.form-inline { display: flex; align-items: flex-end; gap: 14px; flex-wrap: wrap; }
.form-inline-sm { gap: 10px; }
.form-stack { display: flex; flex-direction: column; gap: 16px; max-width: 640px; }

.field { display: flex; flex-direction: column; gap: 4px; }
.field-grow { flex: 1; min-width: 200px; }
.field label { font-size: 0.85rem; color: var(--color-muted); }
.field-checkbox label { display: flex; align-items: center; gap: 8px; font-size: 0.95rem; color: var(--color-text); }

input[type="text"], input[type="number"], input[type="email"], input[type="file"], textarea, select {
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
    background: #fff;
    color: var(--color-text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}
textarea { resize: vertical; }

.btn {
    display: inline-block;
    border: none;
    border-radius: 6px;
    padding: 9px 16px;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    font-family: inherit;
    transition: background 0.15s ease, box-shadow 0.15s ease, transform 0.05s ease;
}
.btn-primary { background: var(--color-primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-primary:active { transform: translateY(1px); }
.btn-secondary { background: #eef1f4; color: var(--color-text); }
.btn-secondary:hover { background: #e2e6ea; }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: 6px 10px; font-size: 0.82rem; }

.table { width: 100%; border-collapse: collapse; margin-top: 10px; }
.table th, .table td {
    text-align: left;
    padding: 10px 8px;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.92rem;
    vertical-align: middle;
}
.table th { color: var(--color-muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.02em; }
.table tbody tr { transition: background 0.1s ease; }
.table tbody tr:hover { background: #fafbfc; }
.table input[type="number"] { width: 90px; }
.text-right { text-align: right; }
.inline { display: inline-block; }

.empty {
    color: var(--color-muted);
    font-style: italic;
    text-align: center;
    padding: 26px 16px;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    background: #fbfcfd;
}

.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 0.92rem; }
.alert-exito { background: var(--color-success-bg); color: var(--color-success-text); }
.alert-error { background: var(--color-error-bg); color: var(--color-error-text); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #eef1f4;
    border-radius: 999px;
    padding: 5px 6px 5px 12px;
    font-size: 0.85rem;
}
.chip button {
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--color-muted);
    font-size: 1rem;
    line-height: 1;
    padding: 2px 6px;
}
.chip button:hover { color: var(--color-danger); }

.chips-select { gap: 8px; }
.chip-check {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 0.85rem;
    cursor: pointer;
    background: #fff;
    transition: border-color 0.15s ease, background 0.15s ease;
}
.chip-check:hover { border-color: var(--color-primary); }
.chip-check:has(input:checked) { background: var(--color-primary-soft); border-color: var(--color-primary); }
.chip-check input { margin: 0; }

.grupo-tipos { display: flex; flex-direction: column; gap: 14px; margin-bottom: 16px; }
.grupo-tipo strong { display: block; margin-bottom: 6px; font-size: 0.9rem; }

.detalle { display: grid; grid-template-columns: 140px 1fr; row-gap: 8px; margin: 0; flex: 1; min-width: 220px; }
.detalle dt { color: var(--color-muted); font-size: 0.85rem; }
.detalle dd { margin: 0; }

.thumb {
    width: 48px;
    height: 48px;
    border-radius: 6px;
    object-fit: cover;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #eef1f4;
    color: var(--color-muted);
    font-size: 0.65rem;
    text-align: center;
}
.thumb-placeholder { border: 1px dashed var(--color-border); }
.thumb-lg { width: 140px; height: 140px; font-size: 0.8rem; border-radius: var(--radius); }

.hidden { display: none !important; }
.visually-hidden {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ---- Vista dividida: catálogo + alta de producto lado a lado ---- */
.split-view {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    align-items: stretch;
}
.split-panel {
    background: var(--color-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    height: calc(100vh - 230px);
    min-height: 480px;
    overflow: hidden;
}
.split-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
    flex-shrink: 0;
}
.split-panel-head h2 {
    margin: 0;
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.split-panel-body {
    padding: 18px 20px 26px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}
.split-panel-body .table thead th {
    position: sticky;
    top: -1px;
    background: var(--color-panel);
}
.count-badge {
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    font-size: 0.72rem;
    font-weight: 700;
    padding: 2px 9px;
    border-radius: 999px;
}
.filtro-categoria select { min-width: 170px; }

@media (max-width: 960px) {
    .split-view { grid-template-columns: 1fr; }
    .split-panel { height: auto; max-height: none; }
    .split-panel-body { overflow-y: visible; }
    .split-panel-body .table thead th { position: static; }
}

@media (max-width: 600px) {
    .topbar-inner { flex-direction: column; align-items: flex-start; }
    .form-inline { flex-direction: column; align-items: stretch; }
    .detalle { grid-template-columns: 1fr; }
    .split-panel-head { flex-direction: column; align-items: stretch; }
}