:root {
    --bg: #f4f4f8;
    --surface: #ffffff;
    --border: #e6e6ee;
    --text: #2b2b3a;
    --text-soft: #6b6b80;
    --primary: #5457f0;
    --primary-soft: #eceefe;
    --primary-dark: #2b2d5c;
    --success: #1f9d6b;
    --warning: #c98a12;
    --danger: #d64545;
    --radius: 6px;
    --sidebar-w: 340px;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
    font-family: "Nunito", system-ui, sans-serif;
    font-size: 16px;
    color: var(--text);
    background: var(--bg);
}
a { color: var(--primary); text-decoration: none; }
svg { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

/* ----------------------------- Layout ----------------------------- */
.app { display: flex; min-height: 100vh; }

.sidebar {
    position: sticky; top: 0; height: 100vh;
    width: var(--sidebar-w); flex-shrink: 0;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex; flex-direction: column;
    transition: width .2s;
}
.sidebar-toggle {
    position: absolute; right: -18px; top: 60px;
    width: 36px; height: 36px; border-radius: 50%;
    border: 1px solid var(--border); background: var(--surface);
    box-shadow: 0 2px 6px rgba(0,0,0,.08);
    cursor: pointer; display: grid; place-items: center; color: var(--text); z-index: 2;
}
.sidebar-toggle svg { width: 18px; height: 18px; }
.brand { padding: 40px 32px 30px; font-weight: 700; font-size: 20px; color: var(--primary-dark); }

.nav { flex: 1; overflow-y: auto; padding-bottom: 20px; }
.nav-item {
    display: flex; align-items: center; gap: 30px;
    padding: 18px 32px; color: var(--primary-dark); font-size: 19px;
}
.nav-item:hover { color: var(--primary); }
.nav-icon { width: 28px; height: 28px; color: var(--primary); }
.nav-caret { width: 18px; height: 18px; margin-left: auto; }
.nav-sub {
    display: block; padding: 14px 32px 14px 98px; margin-right: 26px;
    color: var(--primary-dark); font-size: 16px;
    border-radius: 0 999px 999px 0;
}
.nav-sub:hover { color: var(--primary); }
.nav-sub.is-active { background: var(--primary-soft); }

.sidebar-user {
    border-top: 1px solid var(--border);
    padding: 22px 32px; display: flex; align-items: center; gap: 0;
}
.avatar {
    width: 58px; height: 58px; border-radius: 50%;
    background: var(--primary); color: #fff; display: grid; place-items: center; font-size: 20px;
    position: relative; z-index: 1;
}
.avatar-2 { width: 46px; height: 46px; margin-left: -12px; background: #a9abf7; font-size: 16px; z-index: 0; }
.user-name { margin-left: 26px; font-size: 19px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 160px; }

body.sidebar-collapsed .sidebar { width: 88px; }
body.sidebar-collapsed .sidebar .nav-item span,
body.sidebar-collapsed .sidebar .nav-caret,
body.sidebar-collapsed .sidebar .nav-sub,
body.sidebar-collapsed .sidebar .brand,
body.sidebar-collapsed .sidebar .user-name,
body.sidebar-collapsed .sidebar .avatar-2 { display: none; }
body.sidebar-collapsed .sidebar-toggle svg { transform: rotate(180deg); }
body.sidebar-collapsed .nav-item, body.sidebar-collapsed .sidebar-user { padding-left: 20px; }

.main { flex: 1; min-width: 0; padding: 36px 40px 60px 50px; }

/* --------------------------- Page header --------------------------- */
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 36px; flex-wrap: wrap; }
.page-title { font-size: 42px; font-weight: 400; margin: 0; }
.breadcrumb { color: var(--text-soft); font-size: 15px; margin-bottom: 4px; }

.tabs { display: flex; gap: 10px; border-bottom: 1px solid var(--border); margin-bottom: 48px; overflow-x: auto; }
.tab { padding: 14px 12px 22px; color: var(--text); font-size: 22px; white-space: nowrap; border-bottom: 3px solid transparent; }
.tab.is-active { border-bottom-color: var(--primary); }

/* ----------------------------- Buttons ----------------------------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    border: 1px solid transparent; border-radius: var(--radius);
    padding: 14px 22px; font: inherit; font-size: 18px; cursor: pointer;
    background: var(--surface); color: var(--text); border-color: var(--border);
}
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn-dark { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-dark:hover { background: #1f2146; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-soft { background: var(--primary-soft); border-color: var(--primary-soft); color: var(--primary-dark); }
.btn-sm { padding: 8px 14px; font-size: 15px; }

/* ------------------------------ Cards ------------------------------ */
.grid-2 { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr); gap: 46px; align-items: start; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 4px; margin-bottom: 46px; }
.card-head { padding: 34px 48px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.card-title { font-size: 25px; font-weight: 400; margin: 0; }
.card-sub { color: var(--text); font-size: 18px; margin: 6px 0 0; }
.card-body { padding: 34px 48px; }
.card-foot { padding: 24px 48px; border-top: 1px solid var(--border); display: flex; gap: 14px; justify-content: flex-end; flex-wrap: wrap; }

/* ------------------------------ Forms ------------------------------ */
.field { margin-bottom: 26px; }
.field label, .label { display: block; font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.hint { color: var(--text-soft); font-size: 14px; margin-top: 6px; }
.input, .textarea, .select {
    width: 100%; font: inherit; font-size: 17px; color: var(--text);
    padding: 13px 16px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff;
}
.input:focus, .textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.textarea { min-height: 320px; resize: vertical; font-family: ui-monospace, Consolas, monospace; font-size: 15px; line-height: 1.55; }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.is-invalid { border-color: var(--danger) !important; }
.error-text { color: var(--danger); font-size: 14px; margin-top: 6px; }

.check { display: flex; align-items: center; gap: 10px; font-size: 16px; margin-bottom: 12px; cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--primary); }

.merge-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.tag { background: var(--primary-soft); color: var(--primary-dark); border: 0; border-radius: 999px; padding: 5px 12px; font: inherit; font-size: 14px; cursor: pointer; }

/* Lista de listas */
.list-search { margin-bottom: 14px; }
.list-box { max-height: 340px; overflow-y: auto; border: 1px solid var(--border); border-radius: var(--radius); }
.list-option { display: flex; align-items: center; gap: 14px; padding: 14px 18px; border-bottom: 1px solid var(--border); cursor: pointer; }
.list-option:last-child { border-bottom: 0; }
.list-option:hover { background: #fafaff; }
.list-option input { width: 18px; height: 18px; accent-color: var(--primary); }
.list-option .meta { color: var(--text-soft); font-size: 13px; }
.list-option.is-checked { background: var(--primary-soft); }
.selected-count { font-size: 15px; color: var(--primary); margin-top: 10px; }

/* Resumen */
.stat-big { font-size: 42px; }
.summary-row { display: flex; justify-content: space-between; padding: 14px 0; border-bottom: 1px solid var(--border); gap: 16px; }
.summary-row:last-child { border-bottom: 0; }
.summary-row span:last-child { text-align: right; word-break: break-word; }

.preview { background: #fafafd; border: 1px dashed var(--border); border-radius: var(--radius); padding: 18px; white-space: pre-wrap; font-family: ui-monospace, Consolas, monospace; font-size: 14px; max-height: 260px; overflow: auto; }

/* ------------------------------ Tables ----------------------------- */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: 16px 20px; border-bottom: 1px solid var(--border); font-size: 16px; }
.table th { font-weight: 600; color: var(--text-soft); font-size: 14px; text-transform: uppercase; letter-spacing: .03em; }
.table-wrap { overflow-x: auto; }
.empty { text-align: center; padding: 60px 20px; color: var(--text-soft); }

.badge { display: inline-block; padding: 4px 12px; border-radius: 999px; font-size: 13px; font-weight: 600; }
.badge-muted { background: #eeeef3; color: #5b5b70; }
.badge-primary { background: var(--primary-soft); color: var(--primary); }
.badge-success { background: #e3f6ee; color: var(--success); }
.badge-warning { background: #fdf3df; color: var(--warning); }
.badge-danger { background: #fde8e8; color: var(--danger); }

/* --------------------------- Verificación -------------------------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); }
.stat-tile {
    display: flex; flex-direction: column; align-items: flex-start; gap: 10px;
    padding: 26px 32px; color: var(--text);
    border-right: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.stat-tile:hover { background: #fafaff; }
.stat-tile.is-active { background: var(--primary-soft); }
.stat-num { font-size: 34px; line-height: 1; }
.steps { padding-left: 20px; margin: 0 0 24px; color: var(--text-soft); line-height: 1.6; }
.steps li { margin-bottom: 8px; }
.progress { height: 8px; background: var(--primary-soft); border-radius: 999px; overflow: hidden; margin: 18px 0; }
.progress-bar { height: 100%; width: 35%; background: var(--primary); border-radius: 999px; animation: indeterminate 1.4s ease-in-out infinite; }
@keyframes indeterminate { 0% { transform: translateX(-100%); } 100% { transform: translateX(300%); } }

/* ------------------------------ Alerts ----------------------------- */
.alert { padding: 14px 20px; border-radius: var(--radius); margin-bottom: 24px; font-size: 16px; }
.alert-success { background: #e3f6ee; color: #146b4a; }
.alert-error { background: #fde8e8; color: #9b2c2c; }
.alert-info { background: var(--primary-soft); color: var(--primary-dark); }

/* ---------------------------- Responsive --------------------------- */
@media (max-width: 1200px) { .grid-2 { grid-template-columns: 1fr; } }
@media (max-width: 800px) {
    :root { --sidebar-w: 88px; }
    .sidebar .nav-item span, .sidebar .nav-caret, .sidebar .nav-sub, .sidebar .brand, .sidebar .user-name, .sidebar .avatar-2 { display: none; }
    .nav-item, .sidebar-user { padding-left: 20px; }
    .main { padding: 24px 16px; }
    .card-head, .card-body, .card-foot { padding: 22px; }
    .row-2 { grid-template-columns: 1fr; }
    .page-title { font-size: 32px; }
}