:root {
    --bg-body: #f4f6f9;
    --bg-surface: #ffffff;
    --bg-sidebar: #1a1a2e;
    --bg-topbar: #ffffff;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
}

[data-theme="dark"] {
    --bg-body: #0f0f17;
    --bg-surface: #1a1a2e;
    --bg-sidebar: #12121e;
    --bg-topbar: #1a1a2e;
    --text-primary: #e4e4ed;
    --text-secondary: #8888a4;
    --border-color: #2a2a40;
    --input-bg: #242438;
    --input-border: #35354f;
    --input-text: #e4e4ed;
    --input-placeholder: #6f6f8c;
    --hover-bg: #242438;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    transition: background-color 0.3s, color 0.3s;
}

/* Dark theme: Inputs, selects, textareas */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select,
[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="password"],
[data-theme="dark"] input[type="email"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] input[type="date"],
[data-theme="dark"] input[type="time"],
[data-theme="dark"] input[type="search"],
[data-theme="dark"] input[type="tel"],
[data-theme="dark"] input[type="url"],
[data-theme="dark"] textarea {
    background-color: var(--input-bg) !important;
    border-color: var(--input-border) !important;
    color: var(--input-text) !important;
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] textarea:focus {
    background-color: var(--input-bg) !important;
    border-color: #6C63FF !important;
    color: var(--input-text) !important;
    box-shadow: 0 0 0 0.25rem rgba(108, 99, 255, 0.25) !important;
}

[data-theme="dark"] .form-control::placeholder,
[data-theme="dark"] textarea::placeholder {
    color: var(--input-placeholder) !important;
    opacity: 1;
}

[data-theme="dark"] .form-control:disabled,
[data-theme="dark"] .form-control[readonly] {
    background-color: #1a1a2a !important;
    color: var(--text-secondary) !important;
}

/* Dark theme: Input group icons/addons */
[data-theme="dark"] .input-group-text {
    background-color: var(--input-bg) !important;
    border-color: var(--input-border) !important;
    color: var(--text-secondary) !important;
}

/* Dark theme: Labels */
[data-theme="dark"] .form-label {
    color: var(--text-primary);
}

[data-theme="dark"] .form-text,
[data-theme="dark"] .text-muted {
    color: var(--text-secondary) !important;
}

/* Dark theme: Modals */
[data-theme="dark"] .modal-content {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
    border-color: var(--border-color);
}

[data-theme="dark"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Dark theme: Select options */
[data-theme="dark"] .form-select option {
    background-color: var(--input-bg);
    color: var(--input-text);
}

/* Dark theme: File inputs */
[data-theme="dark"] .form-control[type="file"]::file-selector-button {
    background-color: #2a2a40;
    color: var(--text-primary);
    border: 0;
    border-right: 1px solid var(--input-border);
}

/* Dark theme: Tables hover */
[data-theme="dark"] .table-hover > tbody > tr:hover > * {
    background-color: var(--hover-bg) !important;
    color: var(--text-primary) !important;
}

/* Dark theme: Breadcrumbs */
[data-theme="dark"] .breadcrumb {
    background-color: transparent;
}

[data-theme="dark"] .breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-secondary);
}

/* Dark theme: Alerts */
[data-theme="dark"] .alert-success {
    background-color: rgba(40, 167, 69, 0.15);
    color: #7edd8f;
    border-color: rgba(40, 167, 69, 0.3);
}

[data-theme="dark"] .alert-danger {
    background-color: rgba(220, 53, 69, 0.15);
    color: #ff8a95;
    border-color: rgba(220, 53, 69, 0.3);
}

[data-theme="dark"] .alert-warning {
    background-color: rgba(255, 193, 7, 0.15);
    color: #ffd75e;
    border-color: rgba(255, 193, 7, 0.3);
}

/* Dark theme: Buttons */
[data-theme="dark"] .btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .btn-outline-secondary:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

/* Dark theme: Card headers */
[data-theme="dark"] .card-header.bg-white,
[data-theme="dark"] .card-header {
    background-color: var(--bg-surface) !important;
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Dark theme: Pagination */
[data-theme="dark"] .page-link {
    background-color: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .page-item.disabled .page-link {
    background-color: var(--bg-body);
    color: var(--text-secondary);
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: width 0.3s;
    background-color: var(--bg-sidebar);
}

.sidebar.collapsed {
    width: 0;
    overflow: hidden;
}

body.sidebar-hidden .main-content {
    margin-left: 0 !important;
}

.sidebar .nav-link {
    padding: 10px 15px;
    margin: 2px 0;
    transition: background-color 0.2s;
}

.sidebar .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
}

.sidebar .nav-link.active {
    font-weight: 600;
}

/* Topbar */
.topbar {
    background-color: var(--bg-topbar);
    transition: background-color 0.3s;
}

.main-content {
    margin-left: 250px;
    transition: margin-left 0.3s;
}

.content-wrapper {
    padding: 20px;
}

/* Stat cards */
.stat-card {
    border: none;
    border-radius: 10px;
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-card .card-body {
    padding: 20px;
}

.stat-card .stat-icon {
    font-size: 2rem;
    opacity: 0.7;
}

.stat-card .stat-value {
    font-size: 1.8rem;
    font-weight: 700;
}

.stat-card .stat-label {
    font-size: 0.85rem;
}

/* Tables */
.table th {
    font-weight: 600;
    border-bottom-width: 2px;
}

/* Status badges */
.badge-new { background-color: #0d6efd; }
.badge-confirmed { background-color: #198754; }
.badge-preparing { background-color: #ffc107; color: #000; }
.badge-on_delivery { background-color: #fd7e14; }
.badge-delivered { background-color: #20c997; }
.badge-cancelled { background-color: #dc3545; }

/* Login page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    width: 400px;
    border: none;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

/* Images */
.product-img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
}

.category-img {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: 8px;
}

/* Theme toggle */
.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 6px 10px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1.1rem;
}

.theme-toggle:hover {
    background-color: rgba(108, 99, 255, 0.1);
    border-color: #6C63FF;
    color: #6C63FF;
}

/* ============ RESPONSIVE ============ */

/* Tablet */
@media (max-width: 992px) {
    .sidebar {
        width: 0;
        overflow: hidden;
        position: fixed;
        z-index: 1050;
    }
    .sidebar.show {
        width: 250px;
    }
    .main-content {
        margin-left: 0 !important;
    }
    /* Overlay when sidebar open */
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1040;
    }
    .sidebar-overlay.show {
        display: block;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .content-wrapper {
        padding: 12px;
    }

    /* Stat cards */
    .stat-card .stat-value {
        font-size: 1.3rem;
    }
    .stat-card .card-body {
        padding: 14px;
    }
    .stat-card .stat-icon {
        font-size: 1.5rem;
    }

    /* Tables: horizontal scroll on card bodies */
    .card-body.p-0 {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    .card-body.p-0 > .table {
        min-width: 600px;
    }

    /* Forms in modals */
    .modal-dialog {
        margin: 10px;
    }

    /* Buttons stack */
    .d-flex.gap-2 {
        flex-wrap: wrap;
    }

    /* Pagination */
    .pagination {
        flex-wrap: wrap;
        gap: 4px;
    }

    /* Cards */
    .card {
        border-radius: 10px;
    }

    /* Login page */
    .login-card {
        width: 95%;
        margin: 10px;
    }

    /* Orders view page */
    .row.g-4 > .col-md-8,
    .row.g-4 > .col-md-4 {
        width: 100%;
    }

    /* Topbar title */
    .topbar .navbar-text {
        font-size: 14px;
        max-width: 150px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    /* Hide text in buttons, show only icons */
    .btn-sm {
        padding: 4px 8px;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .content-wrapper {
        padding: 8px;
    }

    h4 {
        font-size: 1.1rem;
    }

    .stat-card .stat-value {
        font-size: 1.1rem;
    }

    .stat-card .stat-label {
        font-size: 0.75rem;
    }

    /* 2 stat cards per row instead of 4 */
    .row.g-3 > .col-md-3 {
        width: 50%;
    }

    .product-img {
        width: 45px;
        height: 45px;
    }

    .category-img {
        width: 40px;
        height: 40px;
    }
}