/* ============================================
   SISTEMA DE REPUESTOS - ESTILOS
   ============================================ */

:root {
    --primary: #1a56db;
    --primary-dark: #1242b0;
    --primary-light: #e8eefb;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --success: #059669;
    --danger: #dc2626;
    --warning: #f59e0b;
    --info: #0ea5e9;
    
    --bg: #f1f5f9;
    --bg-card: #ffffff;
    --bg-sidebar: #0f172a;
    --bg-sidebar-hover: #1e293b;
    
    --text: #1e293b;
    --text-secondary: #64748b;
    --text-sidebar: #cbd5e1;
    --text-sidebar-active: #ffffff;
    
    --border: #e2e8f0;
    --border-focus: var(--primary);
    
    --radius: 8px;
    --radius-sm: 4px;
    --radius-lg: 12px;
    
    --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
    
    --sidebar-w: 250px;
    --topbar-h: 56px;
    
    --font: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html { font-size: 14px; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

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

/* ---- Sidebar ---- */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg-sidebar);
    color: var(--text-sidebar);
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: transform .25s ease;
    overflow-y: auto;
}
.sidebar.collapsed { transform: translateX(-100%); }

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 18px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar-logo {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    object-fit: contain;
    background: #fff;
    padding: 2px;
}
.sidebar-title {
    font-weight: 700;
    font-size: 1rem;
    color: #fff;
    letter-spacing: .02em;
}

.sidebar-nav {
    padding: 8px 0;
    flex: 1;
}
.nav-section {
    padding: 18px 18px 6px;
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: #475569;
}
.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 18px;
    color: var(--text-sidebar);
    text-decoration: none;
    font-size: .9rem;
    font-weight: 500;
    transition: background .15s, color .15s;
    border-left: 3px solid transparent;
}
.nav-item:hover {
    background: var(--bg-sidebar-hover);
    color: #fff;
}
.nav-item.active {
    background: var(--bg-sidebar-hover);
    color: var(--text-sidebar-active);
    border-left-color: var(--primary);
}
.nav-item i { width: 18px; text-align: center; font-size: .95rem; }

/* ---- Main Wrapper ---- */
.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-w);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin .25s ease;
}

/* ---- Top Bar ---- */
.top-bar {
    height: var(--topbar-h);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 50;
}
.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text);
    cursor: pointer;
}
.page-title {
    font-size: 1.15rem;
    font-weight: 600;
    flex: 1;
}
.top-bar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}
.user-name {
    font-size: .85rem;
    color: var(--text-secondary);
}
.btn-logout {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: color .15s;
}
.btn-logout:hover { color: var(--danger); }

/* ---- Main Content ---- */
.main-content {
    padding: 24px;
    flex: 1;
}

/* ---- Cards ---- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}
.card-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
}
.card-body { padding: 20px; }
.card-body.no-padding { padding: 0; }

/* ---- Dashboard Stats ---- */
.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: var(--radius);
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    box-shadow: var(--shadow);
}
.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    flex-shrink: 0;
}
.stat-icon.blue { background: var(--primary-light); color: var(--primary); }
.stat-icon.green { background: #d1fae5; color: var(--success); }
.stat-icon.amber { background: #fef3c7; color: var(--accent-dark); }
.stat-icon.red { background: #fee2e2; color: var(--danger); }
.stat-icon.purple { background: #ede9fe; color: #7c3aed; }
.stat-info h3 {
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.2;
}
.stat-info p {
    font-size: .8rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ---- Tables ---- */
.table-wrapper {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    font-size: .88rem;
}
thead th {
    background: #f8fafc;
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
    font-size: .8rem;
}
tbody td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
tbody tr:hover { background: #f8fafc; }
tbody tr:last-child td { border-bottom: none; }

td.num, th.num { text-align: right; }
td.center, th.center { text-align: center; }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: .85rem;
    font-weight: 600;
    font-family: var(--font);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all .15s;
    line-height: 1.4;
    white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #047857; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover { background: var(--accent-dark); }
.btn-outline {
    background: transparent;
    border-color: var(--border);
    color: var(--text);
}
.btn-outline:hover { background: var(--bg); border-color: var(--text-secondary); }
.btn-sm { padding: 5px 10px; font-size: .78rem; }
.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all .15s;
}
.btn-icon:hover { border-color: var(--primary); color: var(--primary); }
.btn-icon.danger:hover { border-color: var(--danger); color: var(--danger); }

/* ---- Forms ---- */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.form-group.full { grid-column: 1 / -1; }
.form-group label {
    font-size: .8rem;
    font-weight: 600;
    color: var(--text-secondary);
}
.form-control {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: .88rem;
    font-family: var(--font);
    background: #fff;
    transition: border-color .15s;
    width: 100%;
}
.form-control:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(26,86,219,.12);
}
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 80px; }

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    margin-top: 8px;
}

/* Search and filters */
.toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.search-box {
    display: flex;
    align-items: center;
    gap: 6px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0 10px;
    flex: 1;
    max-width: 360px;
}
.search-box i { color: var(--text-secondary); font-size: .85rem; }
.search-box input {
    border: none;
    outline: none;
    padding: 8px 4px;
    font-size: .85rem;
    font-family: var(--font);
    flex: 1;
    background: transparent;
}

/* ---- Badges / Status ---- */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: .72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .02em;
}
.badge-success { background: #d1fae5; color: #065f46; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-info { background: #dbeafe; color: #1e40af; }
.badge-secondary { background: #f1f5f9; color: #475569; }

/* ---- Modal ---- */
.modal-backdrop {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,.45);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.modal-backdrop.show { display: flex; }
.modal {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,.2);
}
.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.modal-header h3 { font-size: 1.05rem; font-weight: 600; }
.modal-close {
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px;
}
.modal-body { padding: 20px; }
.modal-footer {
    padding: 14px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* ---- Invoice Table ---- */
.invoice-items { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
.invoice-items th {
    background: var(--primary);
    color: #fff;
    padding: 8px 10px;
    font-size: .78rem;
    text-align: left;
}
.invoice-items td {
    padding: 6px 10px;
    border: 1px solid var(--border);
    font-size: .85rem;
}
.invoice-items input, .invoice-items select {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: .83rem;
    font-family: var(--font);
}
.invoice-items .num-input { text-align: right; }
.invoice-totals {
    display: flex;
    justify-content: flex-end;
}
.invoice-totals table {
    width: 300px;
}
.invoice-totals td {
    padding: 6px 10px;
    border: none;
}
.invoice-totals .total-label { text-align: right; font-weight: 600; color: var(--text-secondary); }
.invoice-totals .total-value { text-align: right; font-weight: 600; }
.invoice-totals tr:last-child td {
    font-size: 1.1rem;
    color: var(--primary);
    border-top: 2px solid var(--border);
    padding-top: 10px;
}

/* ---- Alert ---- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: .88rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-danger { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }

/* ---- Pagination ---- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 16px;
}
.pagination a, .pagination span {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: .83rem;
    color: var(--text);
    transition: all .15s;
}
.pagination a:hover { background: var(--primary-light); border-color: var(--primary); }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-secondary);
}
.empty-state i { font-size: 2.5rem; margin-bottom: 12px; color: var(--border); }
.empty-state p { font-size: .95rem; }

/* ---- Login Page ---- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    padding: 20px;
}
.login-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.login-card .login-logo {
    display: block;
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    border-radius: var(--radius);
    object-fit: contain;
}
.login-card h1 {
    font-size: 1.3rem;
    text-align: center;
    margin-bottom: 4px;
}
.login-card .login-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: .85rem;
    margin-bottom: 28px;
}
.login-card .form-group { margin-bottom: 16px; }
.login-card .btn { width: 100%; justify-content: center; padding: 10px; font-size: .95rem; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.show { transform: translateX(0); }
    .main-wrapper { margin-left: 0; }
    .sidebar-toggle { display: block; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .top-bar { padding: 0 16px; }
    .main-content { padding: 16px; }
    .card-header { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
}

/* ---- Print ---- */
@media print {
    .sidebar, .top-bar, .btn, .toolbar, .pagination { display: none !important; }
    .main-wrapper { margin-left: 0 !important; }
    .main-content { padding: 0 !important; }
    body { background: #fff; }
}