/* ============================================================
   POS Pro - Estilos Principales
   Diseño moderno inspirado en Square POS, Loyverse, Shopify POS
   ============================================================ */

:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #dbeafe;
    --secondary: #64748b;
    --accent: #10b981;
    --accent-light: #d1fae5;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --sidebar-width: 260px;
    --header-height: 60px;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow-lg: 0 10px 25px rgba(0,0,0,.08);
    --transition: .2s ease;
}

[data-theme="dark"] {
    --bg: #0f172a;
    --bg-card: #1e293b;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #334155;
    --primary-light: #1e3a5f;
    --accent-light: #064e3b;
    --danger-light: #450a0a;
    --warning-light: #451a03;
    --shadow: 0 1px 3px rgba(0,0,0,.2);
    --shadow-lg: 0 10px 25px rgba(0,0,0,.3);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

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

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    transition: transform var(--transition);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header img { width: 36px; height: 36px; border-radius: 8px; object-fit: cover; }
.sidebar-header h2 { font-size: 18px; font-weight: 700; color: var(--primary); }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 12px; }
.sidebar-nav .nav-section { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); padding: 12px 12px 6px; font-weight: 600; }

.nav-item {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 14px; border-radius: var(--radius);
    color: var(--text); font-weight: 500; font-size: 14px;
    transition: all var(--transition); cursor: pointer;
}
.nav-item:hover { background: var(--primary-light); color: var(--primary); }
.nav-item.active { background: var(--primary); color: #fff; }
.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }

.main-content { flex: 1; margin-left: var(--sidebar-width); display: flex; flex-direction: column; }

.topbar {
    height: var(--header-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px; position: sticky; top: 0; z-index: 50;
}

.topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.page-content { padding: 24px; flex: 1; }

/* ---- Componentes ---- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
}
.card-header h3 { font-size: 16px; font-weight: 600; }
.card-body { padding: 20px; }

/* Stats Cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 24px; }

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    display: flex; align-items: flex-start; gap: 16px;
    transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.stat-icon {
    width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; flex-shrink: 0;
}
.stat-icon.blue { background: var(--primary-light); color: var(--primary); }
.stat-icon.green { background: var(--accent-light); color: var(--accent); }
.stat-icon.orange { background: var(--warning-light); color: var(--warning); }
.stat-icon.red { background: var(--danger-light); color: var(--danger); }

.stat-info h4 { font-size: 13px; color: var(--text-muted); font-weight: 500; }
.stat-info .stat-value { font-size: 24px; font-weight: 700; margin-top: 4px; }
.stat-info .stat-change { font-size: 12px; margin-top: 4px; }
.stat-change.up { color: var(--accent); }
.stat-change.down { color: var(--danger); }

/* Botones */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 8px 16px; border-radius: 8px; font-size: 14px; font-weight: 600;
    border: none; cursor: pointer; transition: all var(--transition);
    text-decoration: none; line-height: 1.4;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-success { background: var(--accent); color: #fff; }
.btn-success:hover { background: #059669; color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-lg { padding: 12px 24px; font-size: 16px; }
.btn-icon { width: 36px; height: 36px; padding: 0; border-radius: 8px; }

/* Formularios */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 6px; }
.form-control {
    width: 100%; padding: 10px 14px;
    border: 1px solid var(--border); border-radius: 8px;
    font-size: 14px; background: var(--bg-card); color: var(--text);
    transition: border var(--transition), box-shadow var(--transition);
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.15); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
select.form-control { appearance: auto; }

/* Tablas */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
table th {
    text-align: left; padding: 12px 16px; font-size: 12px;
    text-transform: uppercase; letter-spacing: .03em;
    color: var(--text-muted); font-weight: 600;
    border-bottom: 2px solid var(--border); background: var(--bg);
}
table td { padding: 12px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table tr:hover td { background: var(--primary-light); }
[data-theme="dark"] table tr:hover td { background: rgba(37,99,235,.1); }

/* Badges */
.badge {
    display: inline-block; padding: 3px 10px; border-radius: 20px;
    font-size: 12px; font-weight: 600;
}
.badge-success { background: var(--accent-light); color: var(--accent); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-primary { background: var(--primary-light); color: var(--primary); }

/* Alertas */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.alert-success { background: var(--accent-light); color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: var(--danger-light); color: #991b1b; border: 1px solid #fecaca; }
.alert-warning { background: var(--warning-light); color: #92400e; border: 1px solid #fde68a; }

/* Búsqueda global */
.search-global {
    position: relative; width: 280px;
}
.search-global input {
    width: 100%; padding: 8px 14px 8px 36px;
    border: 1px solid var(--border); border-radius: 20px;
    background: var(--bg); font-size: 14px; color: var(--text);
}
.search-global svg { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); width: 16px; color: var(--text-muted); }
.search-results {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 8px; box-shadow: var(--shadow-lg);
    max-height: 300px; overflow-y: auto; z-index: 200; display: none;
}
.search-results.active { display: block; }
.search-result-item { padding: 10px 14px; cursor: pointer; border-bottom: 1px solid var(--border); }
.search-result-item:hover { background: var(--primary-light); }
.search-result-item .type { font-size: 11px; color: var(--text-muted); text-transform: uppercase; }

/* Modal */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,.5);
    display: none; align-items: center; justify-content: center; z-index: 1000;
    padding: 16px;
}
.modal-overlay.active { display: flex; }
.modal {
    background: var(--bg-card); border-radius: 16px;
    width: 100%; max-width: 500px; max-height: 90dvh; overflow-y: auto;
    box-shadow: var(--shadow-lg);
    -webkit-overflow-scrolling: touch;
}
.modal-header { padding: 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-body { padding: 20px; }
.modal-footer { padding: 16px 20px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }

/* Paginación */
.pagination { display: flex; gap: 4px; justify-content: center; margin-top: 20px; }
.pagination a, .pagination span {
    padding: 8px 14px; border-radius: 8px; font-size: 14px;
    border: 1px solid var(--border); color: var(--text);
}
.pagination a:hover { background: var(--primary-light); }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Toggle tema */
.theme-toggle {
    width: 36px; height: 36px; border-radius: 8px;
    border: 1px solid var(--border); background: var(--bg-card);
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    font-size: 18px;
}

/* Mobile / Sidebar */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    color: var(--text);
    touch-action: manipulation;
}
.menu-toggle:active { background: var(--bg); }
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.45);
    z-index: 99;
    -webkit-tap-highlight-color: transparent;
}

/* Grids responsivos (reemplazan estilos inline) */
.grid-dashboard { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; margin-bottom: 24px; }
.grid-dashboard-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.grid-2-1 { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; }
.grid-1-2 { display: grid; grid-template-columns: 1fr 2fr; gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* Cabecera de página */
.page-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}
.page-toolbar h2 { font-size: clamp(20px, 4vw, 24px); font-weight: 700; margin: 0; }
.page-toolbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* Filtros y formularios en tarjetas */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.filter-bar .form-control { flex: 1 1 auto; min-width: 140px; }

/* Auth (login, recuperar contraseña) */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100dvh;
    padding: 20px;
    padding: max(20px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) max(20px, env(safe-area-inset-left));
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
}
.auth-card {
    background: #fff;
    border-radius: 16px;
    padding: clamp(24px, 5vw, 40px);
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0,0,0,.2);
}
.auth-logo { text-align: center; margin-bottom: 28px; }
.auth-logo h1 { font-size: clamp(26px, 6vw, 32px); color: #2563eb; }
.auth-logo p { color: #64748b; }
.auth-card .btn-primary { width: 100%; padding: 14px; font-size: 16px; margin-top: 8px; min-height: 48px; }
.auth-footer { text-align: center; margin-top: 20px; font-size: 13px; }

/* ============================================================
   RESPONSIVE — Tablet landscape (hasta 1200px)
   ============================================================ */
@media (max-width: 1200px) {
    .grid-dashboard { grid-template-columns: 1fr; }
    .grid-dashboard-2 { grid-template-columns: 1fr; }
    .grid-2-1, .grid-1-2 { grid-template-columns: 1fr; }
}

/* ============================================================
   RESPONSIVE — Tablet (hasta 1024px)
   ============================================================ */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        width: min(280px, 85vw);
        box-shadow: var(--shadow-lg);
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay.active { display: block; }
    .main-content { margin-left: 0; }
    .menu-toggle { display: flex; align-items: center; justify-content: center; }

    .topbar { padding: 0 16px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .form-row, .form-row-3 { grid-template-columns: 1fr; }
    .grid-2 { grid-template-columns: 1fr; }

    .card-header {
        flex-wrap: wrap;
        gap: 10px;
    }
    .card-header .btn, .card-header .d-flex { flex-wrap: wrap; }
}

/* ============================================================
   RESPONSIVE — Móvil (hasta 768px)
   ============================================================ */
@media (max-width: 768px) {
    body {
        font-size: 15px;
        -webkit-text-size-adjust: 100%;
    }

    .topbar {
        height: auto;
        min-height: var(--header-height);
        padding: 10px 12px;
        flex-wrap: wrap;
        gap: 10px;
    }
    .topbar-left {
        flex: 1 1 100%;
        order: 1;
        gap: 10px;
    }
    .topbar-right {
        flex: 1 1 auto;
        order: 2;
        margin-left: auto;
        gap: 8px;
    }
    .topbar-right .text-muted {
        display: none;
    }
    .search-global {
        flex: 1;
        width: auto;
        min-width: 0;
    }
    .search-global input {
        font-size: 16px; /* evita zoom automático en iOS */
        padding: 10px 14px 10px 36px;
    }

    .page-content {
        padding: 16px 12px;
        padding-bottom: max(16px, env(safe-area-inset-bottom));
    }

    .stats-grid { grid-template-columns: 1fr; gap: 12px; }
    .stat-card { padding: 16px; }
    .stat-info .stat-value { font-size: 22px; }

    .page-toolbar,
    .page-content > .d-flex.justify-between {
        flex-direction: column;
        align-items: stretch;
    }
    .page-toolbar-actions,
    .page-content > .d-flex.justify-between > .d-flex {
        width: 100%;
    }
    .page-toolbar-actions .btn,
    .page-content > .d-flex.justify-between .btn {
        flex: 1 1 auto;
        justify-content: center;
        min-height: 44px;
    }

    .filter-bar { flex-direction: column; align-items: stretch; }
    .filter-bar .form-control,
    .card-body .form-control[style*="max-width"],
    .card-body input.form-control[style*="max-width"],
    .card-body select.form-control[style*="max-width"] {
        max-width: 100% !important;
        width: 100%;
    }
    .card-body form.d-flex { flex-direction: column; align-items: stretch !important; }
    .card-body form.d-flex .btn { width: 100%; min-height: 44px; }

    /* Grids inline en vistas antiguas */
    [style*="grid-template-columns:2fr 1fr"],
    [style*="grid-template-columns:1fr 2fr"],
    [style*="grid-template-columns:1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }

    .card-body { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { min-width: 520px; }
    table th, table td { padding: 10px 12px; font-size: 13px; }

    .btn { min-height: 44px; padding: 10px 16px; }
    .btn-sm { min-height: 40px; }
    .form-control { font-size: 16px; padding: 12px 14px; }

    .modal {
        max-width: 100%;
        margin: 0;
        border-radius: 16px 16px 0 0;
        max-height: 92dvh;
    }
    .modal-overlay.active { align-items: flex-end; padding: 0; }
    .modal-footer { flex-wrap: wrap; }
    .modal-footer .btn { flex: 1 1 auto; min-width: 120px; }

    .pagination { flex-wrap: wrap; }
    .pagination a, .pagination span { padding: 10px 14px; min-height: 44px; display: inline-flex; align-items: center; }

    .alert { font-size: 14px; }

    /* Pestañas configuración */
    .settings-tabs { overflow-x: auto; flex-wrap: nowrap !important; -webkit-overflow-scrolling: touch; padding-bottom: 4px; }
    .settings-tabs .btn { flex-shrink: 0; }
}

/* ============================================================
   RESPONSIVE — Móvil pequeño (hasta 480px)
   ============================================================ */
@media (max-width: 480px) {
    .sidebar-header h2 { font-size: 16px; }
    .topbar-right .btn-outline { padding: 8px 12px; font-size: 13px; }
    .stat-icon { width: 40px; height: 40px; font-size: 18px; }
    .grid-cards { grid-template-columns: 1fr; }
    .card-body { padding: 16px; }
    .card-header { padding: 14px 16px; }
    .auth-card { padding: 20px 16px; border-radius: 12px; }
}

/* Toast en móvil */
@media (max-width: 768px) {
    .pos-toast-mobile {
        left: 12px !important;
        right: 12px !important;
        top: auto !important;
        bottom: max(16px, env(safe-area-inset-bottom)) !important;
        min-width: 0 !important;
        width: auto !important;
    }
}

/* Utilidades */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--accent); }
.text-danger { color: var(--danger); }
.fw-bold { font-weight: 700; }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; }
.d-flex { display: flex; } .align-center { align-items: center; } .justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; } .gap-2 { gap: 16px; }
.w-100 { width: 100%; }
.hidden { display: none !important; }

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}