:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --border-color: #334155;
    --input-bg: #0f172a;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
}

.login-container {
    background-color: var(--card-bg);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Form Elements */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-block {
    width: 100%;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.alert {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Dashboard Layout */
.dashboard-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    width: 250px;
    background-color: var(--card-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.nav-links {
    flex: 1;
    padding: 1.5rem 1rem;
    list-style: none;
}

.nav-item {
    margin-bottom: 0.5rem;
}

.nav-btn {
    width: 100%;
    text-align: left;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.nav-btn:hover, .nav-btn.active {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

/* Main Content */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    background-color: var(--bg-color);
}

.panel {
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.panel-title {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Cards & Tables */
.card {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Kanban / Status Board */
.kanban-board {
    display: flex;
    gap: 1.5rem;
    overflow-x: auto;
    padding-bottom: 1rem;
}

.kanban-column {
    min-width: 300px;
    background-color: rgba(30, 41, 59, 0.5);
    border-radius: var(--radius-lg);
    padding: 1rem;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.kanban-header {
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.ot-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.ot-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.ot-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.ot-plate {
    font-weight: 700;
    color: var(--primary-color);
}

.ot-id {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Utilities */
.hidden { display: none !important; }
.text-right { text-align: right; }
.mt-4 { margin-top: 1rem; }

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    border: 1px solid var(--border-color);
    animation: zoomIn 0.2s ease-out;
}

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.close-modal {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.5rem;
}


/* Inventory Grid & Cards */
.inventory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
}

.inventory-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    display: flex;
    flex-direction: column;
}

.inventory-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.inventory-card-add {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-style: dashed;
    border-width: 2px;
    background-color: rgba(59, 130, 246, 0.05); /* very light blue */
}

.inventory-card-add:hover {
    background-color: rgba(59, 130, 246, 0.1);
}

.inv-img {
    height: 120px;
    background-color: #0f172a;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.inv-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.inv-body {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.inv-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
}

.inv-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.inv-price {
    font-weight: 700;
    color: var(--success-color);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.inv-stock-ctrl {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-top: auto;
    background: rgba(0,0,0,0.2);
    padding: 4px;
    border-radius: 4px;
    justify-content: center;
}

.inv-stock-btn {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    background: var(--text-secondary);
    color: var(--bg-color);
    font-weight: bold;
}
.inv-stock-btn:hover { opacity: 0.8; }

svg[id^="barcode-"] {
    max-width: 100%;
    height: auto;
}

.out-of-stock {
    opacity: 0.6;
    filter: grayscale(100%);
}

.out-of-stock {
    opacity: 0.6;
    filter: grayscale(100%);
}

.dropdown-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    max-height: 150px;
    overflow-y: auto;
    z-index: 100;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.dropdown-item {
    padding: 0.75rem;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
}

.dropdown-item:hover {
    background: var(--bg-primary);
}

/* Scrollable Selection Grid */
.scrollable-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
    max-height: 300px;
    overflow-y: auto;
    padding: 0.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.repuesto-select-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
}

.repuesto-select-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.repuesto-select-card.selected {
    border: 2px solid var(--primary-color);
    background: rgba(59, 130, 246, 0.1);
}

.repuesto-select-card img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: white;
}
.badge.warning { background-color: #f59e0b; color: black; }
.badge.primary { background-color: var(--primary-color); }
.badge.success { background-color: var(--success-color); }

.ot-barcodes {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-color);
}
.ot-barcodes div {
    text-align: center;
}
.ot-barcodes svg {
    max-width: 100px;
    height: 40px;
}

/* User Management Grid */
.user-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

.user-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    height: 100%;
    justify-content: space-between;
}

.user-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.user-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), #6366f1);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.user-info {
    text-align: center;
    margin-bottom: 1.5rem;
}

.user-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.user-email {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.user-role {
    margin-top: 0.5rem;
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.role-admin { background-color: rgba(239, 68, 68, 0.2); color: var(--danger-color); border: 1px solid rgba(239, 68, 68, 0.3); }
.role-mechanic { background-color: rgba(59, 130, 246, 0.2); color: var(--primary-color); border: 1px solid rgba(59, 130, 246, 0.3); }

.user-actions {
    display: flex;
    gap: 0.75rem;
    width: 100%;
}

.user-actions button {
    flex: 1;
}

.user-meta-date {
    font-size: 0.7rem;
    color: var(--text-secondary);
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.user-card-add {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-style: dashed;
    border-width: 2px;
    background-color: rgba(59, 130, 246, 0.05); /* very light blue */
    min-height: 250px;
    height: 100%;
}

.user-card-add:hover {
    background-color: rgba(59, 130, 246, 0.1);
    border-color: var(--primary-color);
}

.user-add-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.user-add-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
}