:root {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface-2: #eef2f6;
    --text: #17202a;
    --muted: #657282;
    --line: #d9e0e7;
    --accent: #1d6fbe;
    --accent-2: #0e9f6e;
    --danger: #b42318;
    --warning: #b54708;
    --shadow: 0 14px 34px rgba(18, 38, 63, .08);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    background: var(--bg);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px;
    letter-spacing: 0;
}

a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }

.mock-index { background: #f3f6f4; }
.index-shell { width: min(1160px, calc(100% - 32px)); margin: 0 auto; padding: 48px 0; }

.index-hero {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    align-items: end;
    min-height: 44vh;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--line);
}

.index-hero h1, .topbar h1 {
    margin: 0;
    font-size: clamp(30px, 5vw, 58px);
    line-height: 1;
    letter-spacing: 0;
}

.index-hero p { max-width: 680px; color: var(--muted); font-size: 18px; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: 12px; font-weight: 700; text-transform: uppercase; }

.index-note, .variant-card, .panel, .kpi-card {
    border: 1px solid var(--line);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.index-note { padding: 18px; border-radius: 8px; }
.index-note span { display: block; margin-top: 8px; color: var(--muted); }
.variant-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 24px; }

.variant-card {
    display: grid;
    gap: 14px;
    min-height: 240px;
    padding: 22px;
    border-radius: 8px;
    transition: transform .18s ease, box-shadow .18s ease;
}

.variant-card:hover { transform: translateY(-3px); box-shadow: 0 20px 44px rgba(18, 38, 63, .14); }

.variant-letter, .brand-mark {
    display: inline-grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    color: #fff;
    background: var(--accent);
    font-weight: 800;
}

.variant-card h2 { margin: 0; font-size: 25px; }
.variant-card p { margin: 0; color: var(--muted); }
.card-action { align-self: end; color: var(--accent); font-weight: 700; }
.variant-card-visual { --accent: #4f46e5; background: linear-gradient(180deg, #ffffff, #f0f4ff); }
.variant-card-alert { --accent: #b42318; background: #fff8f6; }

.app-shell { display: grid; grid-template-columns: 252px minmax(0, 1fr); min-height: 100vh; }
.sidebar { position: sticky; top: 0; height: 100vh; padding: 18px; background: #101828; color: #f8fafc; }
.brand { display: flex; gap: 12px; align-items: center; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.12); }
.brand small { display: block; margin-top: 3px; color: #cbd5e1; }
.nav-list { display: grid; gap: 4px; margin-top: 18px; }
.nav-list a, .variant-switcher a { border-radius: 7px; padding: 10px 12px; color: #dbe4ee; }
.nav-list a:hover, .nav-list a.active, .variant-switcher a.active { background: rgba(255,255,255,.12); color: #fff; }

.variant-switcher {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    margin-top: 22px;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,.12);
}

.variant-switcher span { grid-column: 1 / -1; color: #cbd5e1; font-size: 12px; text-transform: uppercase; }
.content { min-width: 0; padding: 24px; }
.topbar { display: flex; justify-content: space-between; gap: 20px; align-items: flex-start; margin-bottom: 18px; }
.topbar h1 { font-size: 34px; }
.top-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }

.btn, .link-button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-height: 36px;
    padding: 9px 13px;
    border: 1px solid var(--accent);
    border-radius: 7px;
    color: #fff;
    background: var(--accent);
    cursor: pointer;
    font-weight: 700;
}

.btn:hover, .link-button:hover { filter: brightness(.96); }
.btn.ghost { color: var(--accent); background: transparent; }
.btn.small { min-height: 30px; padding: 6px 10px; font-size: 12px; }
.btn.full { width: 100%; margin-top: 10px; }
.link-button { min-height: auto; padding: 0; border: 0; color: var(--accent); background: transparent; }

.filter-bar {
    display: grid;
    grid-template-columns: repeat(6, minmax(120px, 1fr)) auto auto;
    gap: 10px;
    align-items: end;
    margin-bottom: 16px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
}

.wide-filter {
    grid-template-columns: repeat(5, minmax(120px, 1fr)) 1.4fr 1.4fr auto auto;
}

.shipment-filter {
    grid-template-columns: repeat(6, minmax(120px, 1fr));
}

.filter-bar label { display: grid; gap: 5px; color: var(--muted); font-size: 12px; font-weight: 700; }
.filter-bar input, .filter-bar select {
    width: 100%;
    min-height: 36px;
    padding: 7px 9px;
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--text);
    background: #fff;
}

.search-field { grid-column: span 2; }
.sku-multi { grid-column: span 2; }
.sku-multi textarea {
    width: 100%;
    min-height: 58px;
    resize: vertical;
    padding: 7px 9px;
    border: 1px solid var(--line);
    border-radius: 6px;
}
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.kpi-card { padding: 16px; border-radius: 8px; }
.kpi-card span, .kpi-card small { display: block; color: var(--muted); }
.kpi-card strong { display: block; margin: 8px 0 4px; font-size: 28px; }
.kpi-card.danger { border-color: #f6b7af; background: #fff7f5; }

.dashboard-grid, .detail-grid, .settings-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 16px; }
.panel { min-width: 0; padding: 16px; border-radius: 8px; }
.panel h2 { margin: 0 0 12px; font-size: 18px; }
.panel-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; margin-bottom: 12px; }
.panel-head h2 { margin: 0; }
.muted { color: var(--muted); }
.metric-line { margin: 0 0 8px; font-weight: 700; }

.bar-row { display: grid; grid-template-columns: 96px 1fr 48px; gap: 10px; align-items: center; margin: 14px 0; }
.bar-track { height: 12px; overflow: hidden; border-radius: 999px; background: var(--surface-2); }
.bar-track div { height: 100%; background: var(--accent); }
.worklist { display: grid; gap: 8px; }
.worklist a { display: flex; justify-content: space-between; gap: 10px; padding: 10px; border: 1px solid var(--line); border-radius: 7px; background: #fff; }
.worklist.cards { grid-template-columns: repeat(2, 1fr); }
.worklist.cards a { display: grid; }
.table-wrap { width: 100%; overflow: auto; }
.table-toolbar,
.bulk-bar,
.pagination-demo {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: #f8fafc;
}

.bulk-bar {
    justify-content: flex-start;
    border-color: #bfdbfe;
    background: #eff6ff;
}

.bulk-bar[hidden] {
    display: none;
}

.per-page-control {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.per-page-control select {
    min-height: 32px;
    border: 1px solid var(--line);
    border-radius: 6px;
}

.pagination-demo {
    justify-content: flex-start;
    background: transparent;
    border: 0;
    padding: 0;
}

.pagination-demo a {
    display: inline-grid;
    place-items: center;
    min-width: 32px;
    min-height: 32px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #fff;
}

.pagination-demo a.active {
    border-color: var(--accent);
    color: #fff;
    background: var(--accent);
}

.data-table { width: 100%; border-collapse: collapse; white-space: nowrap; }
.data-table th, .data-table td { padding: 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.data-table th { color: var(--muted); background: #f8fafc; font-size: 12px; text-transform: uppercase; }
.data-table a { color: var(--accent); font-weight: 700; }

.status, .alert-pill, .code-badge {
    display: inline-flex;
    align-items: center;
    max-width: 100%;
    padding: 4px 8px;
    border-radius: 999px;
    color: #175c43;
    background: #dcfce7;
    font-size: 12px;
    font-weight: 700;
}

.status-in-perdita, .status-alert-costo-mancante, .status-warning { color: #8a2c0d; background: #ffedd5; }
.status-spedizione-non-associata, .status-rimborso-presente { color: #1d4ed8; background: #dbeafe; }
.status-ok { color: #175c43; background: #dcfce7; }
.alert-pill { margin: 0 6px 6px 0; color: #8a2c0d; background: #ffedd5; }
.code-badge { color: #1f2937; background: #e5e7eb; }
.empty-state { padding: 24px; border: 1px dashed var(--line); color: var(--muted); text-align: center; }
.detail-tabs { display: flex; gap: 6px; margin-bottom: 12px; }

.tab-button {
    min-height: 34px;
    padding: 7px 12px;
    border: 1px solid var(--line);
    border-radius: 7px;
    color: var(--muted);
    background: #fff;
    cursor: pointer;
}

.tab-button.active { border-color: var(--accent); color: var(--accent); font-weight: 700; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.definition-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 0; }
.definition-grid div { padding: 12px; border: 1px solid var(--line); border-radius: 7px; background: #fff; }
.definition-grid dt { color: var(--muted); font-size: 12px; font-weight: 700; }
.definition-grid dd { margin: 5px 0 0; font-weight: 800; }
.timeline { margin: 0; padding-left: 18px; color: var(--muted); }
.timeline li { margin: 10px 0; }
.settings-grid { grid-template-columns: repeat(3, 1fr); }
.setting-card.wide { grid-column: 1 / -1; }
.code-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
.code-grid span { display: flex; gap: 8px; align-items: center; padding: 8px; border: 1px solid var(--line); border-radius: 7px; background: #fff; }
.code-grid strong { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 6px; color: #fff; background: var(--accent); }

.demo-toast {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 20;
    max-width: min(360px, calc(100vw - 40px));
    padding: 13px 16px;
    border-radius: 8px;
    color: #fff;
    background: #101828;
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
    transition: opacity .18s ease, transform .18s ease;
}

.demo-toast.show { opacity: 1; transform: translateY(0); }
.demo-modal { position: fixed; inset: 0; z-index: 30; display: grid; place-items: center; padding: 20px; background: rgba(15,23,42,.45); }
.demo-modal[hidden] { display: none; }
.modal-card { width: min(520px, 100%); padding: 18px; border-radius: 8px; background: #fff; box-shadow: 0 24px 60px rgba(15,23,42,.28); }
.modal-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin: 10px 0 14px;
}

.modal-form label {
    display: grid;
    gap: 5px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.modal-form input,
.modal-form textarea {
    width: 100%;
    min-height: 36px;
    padding: 7px 9px;
    border: 1px solid var(--line);
    border-radius: 6px;
}

.modal-form .wide {
    grid-column: 1 / -1;
}

.pie-demo {
    width: 220px;
    aspect-ratio: 1;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: conic-gradient(#1d6fbe 0 var(--p1), #0e9f6e var(--p1) var(--p2), #f59e0b var(--p2) var(--p3), #64748b var(--p3) var(--p4), #ef4444 var(--p4) var(--p5), #111827 var(--p5) 100%);
}

.legend-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.legend-grid span {
    display: inline-flex;
    gap: 6px;
    align-items: center;
    color: var(--muted);
}

.legend-grid i {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

.c1 { background: #1d6fbe; } .c2 { background: #0e9f6e; } .c3 { background: #f59e0b; }
.c4 { background: #64748b; } .c5 { background: #ef4444; } .c6 { background: #111827; }

.bar-chart-demo {
    display: flex;
    align-items: end;
    gap: 10px;
    height: 220px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: linear-gradient(#f8fafc 1px, transparent 1px) 0 0 / 100% 25%;
}

.bar-chart-demo span {
    flex: 1;
    min-width: 22px;
    border-radius: 6px 6px 0 0;
    background: var(--accent);
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(120px, 1fr));
    gap: 10px;
    align-items: end;
}

.comparison-grid label {
    display: grid;
    gap: 5px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.comparison-grid input,
.comparison-grid select {
    min-height: 36px;
    padding: 7px 9px;
    border: 1px solid var(--line);
    border-radius: 6px;
}

.wide-panel {
    grid-column: 1 / -1;
}

.profit-builder .compact-kpi {
    grid-template-columns: repeat(3, 1fr);
    margin-top: 14px;
}

.variant-visual { --bg: #eef2ff; --surface: #ffffff; --surface-2: #dfe7ff; --accent: #4f46e5; --accent-2: #06b6d4; }
.variant-visual .sidebar { background: #312e81; }
.variant-visual .kpi-card strong { font-size: 36px; }
.variant-visual .panel, .variant-visual .kpi-card { border-color: #d8defd; }
.variant-alert { --bg: #fff7f4; --surface: #ffffff; --surface-2: #ffe4dd; --accent: #b42318; --accent-2: #f97316; }
.variant-alert .sidebar { background: #3b1d18; }
.variant-alert .panel { border-color: #fecaca; }
.variant-alert .kpi-card { border-left: 4px solid var(--accent); }
.variant-compact { --bg: #f4f6f8; --accent: #1f5f8b; }
.variant-compact .content { padding: 16px; }
.variant-compact .panel, .variant-compact .kpi-card { box-shadow: none; }
.variant-compact .data-table th, .variant-compact .data-table td { padding: 7px 8px; }

@media (max-width: 1100px) {
    .app-shell, .index-hero { grid-template-columns: 1fr; }
    .sidebar { position: static; height: auto; }
    .nav-list { grid-template-columns: repeat(3, 1fr); }
    .filter-bar, .wide-filter, .shipment-filter, .kpi-grid, .dashboard-grid, .detail-grid, .settings-grid, .variant-grid, .comparison-grid { grid-template-columns: 1fr 1fr; }
    .search-field, .setting-card.wide { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
    .content { padding: 14px; }
    .topbar, .panel-head { align-items: stretch; flex-direction: column; }
    .filter-bar, .wide-filter, .shipment-filter, .kpi-grid, .dashboard-grid, .detail-grid, .settings-grid, .variant-grid, .worklist.cards, .definition-grid, .code-grid, .nav-list, .comparison-grid, .modal-form { grid-template-columns: 1fr; }
    .top-actions { justify-content: stretch; }
    .btn, .top-actions .btn { width: 100%; }
}