/* ============================================
   Admin Panel Stylesheet - Phuoc Hoa Rubber
   ============================================ */

/* CSS Variables */
:root {
    --admin-primary: #2E7D32;
    --admin-primary-dark: #1B5E20;
    --admin-sidebar-bg: #1a1a2e;
    --admin-sidebar-text: #e0e0e0;
    --admin-header-bg: #ffffff;
    --admin-body-bg: #f4f6f9;
    --admin-card-bg: #ffffff;
    --admin-border: #e0e0e0;
    --admin-text: #333333;
    --admin-text-muted: #666666;
    --admin-success: #4CAF50;
    --admin-warning: #ff9800;
    --admin-danger: #f44336;
    --admin-info: #2196F3;
    --admin-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --admin-transition: all 0.3s ease;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', 'Segoe UI', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--admin-text);
    background: var(--admin-body-bg);
}

a {
    text-decoration: none;
    color: inherit;
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--admin-primary) 0%, var(--admin-primary-dark) 100%);
    padding: 20px;
}

.login-box {
    width: 100%;
    max-width: 400px;
    background: var(--admin-card-bg);
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.login-header {
    background: var(--admin-primary);
    color: #fff;
    padding: 30px;
    text-align: center;
}

.login-header img {
    height: 60px;
    margin-bottom: 15px;
}

.login-header h1 {
    font-size: 20px;
    font-weight: 500;
    margin: 0;
}

.login-body {
    padding: 30px;
}

.login-body .form-group {
    margin-bottom: 20px;
}

.login-body .form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--admin-text);
}

.login-body .form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--admin-border);
    border-radius: 4px;
    font-size: 14px;
    transition: var(--admin-transition);
}

.login-body .form-control:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.1);
}

.login-body .btn-login {
    width: 100%;
    padding: 12px;
    background: var(--admin-primary);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--admin-transition);
}

.login-body .btn-login:hover {
    background: var(--admin-primary-dark);
}

.login-body .login-error {
    background: #ffebee;
    color: var(--admin-danger);
    padding: 10px 15px;
    border-radius: 4px;
    margin-bottom: 20px;
    font-size: 13px;
}

/* Admin Layout */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.admin-sidebar {
    width: 260px;
    background: var(--admin-sidebar-bg);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    transition: var(--admin-transition);
    z-index: 1000;
}

.admin-sidebar.collapsed {
    left: -260px;
}

.sidebar-brand {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand img {
    height: 40px;
}

.sidebar-brand span {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    white-space: nowrap;
}

.admin-sidebar.collapsed .sidebar-brand span {
    display: none;
}

.sidebar-menu {
    padding: 15px 0;
}

.sidebar-menu-item {
    display: block;
    padding: 12px 20px;
    color: var(--admin-sidebar-text);
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--admin-transition);
}

.sidebar-menu-item:hover,
.sidebar-menu-item.active {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.sidebar-menu-item.active {
    border-left: 3px solid var(--admin-primary);
}

.sidebar-menu-item i {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.sidebar-menu-item span {
    white-space: nowrap;
}

.admin-sidebar.collapsed .sidebar-menu-item span {
    display: none;
}

.sidebar-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 15px 0;
}

.sidebar-heading {
    padding: 10px 20px;
    font-size: 11px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 1px;
}

.admin-sidebar.collapsed .sidebar-heading {
    display: none;
}

/* Main Content */
.admin-main {
    flex: 1;
    margin-left: 260px;
    transition: var(--admin-transition);
}

.admin-sidebar.collapsed ~ .admin-main {
    margin-left: 0;
}

/* Header */
.admin-header {
    background: var(--admin-header-bg);
    padding: 15px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--admin-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.sidebar-toggle {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--admin-text);
    cursor: pointer;
}

.page-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--admin-text);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-icon {
    position: relative;
    font-size: 18px;
    color: var(--admin-text-muted);
    cursor: pointer;
}

.header-icon .badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--admin-danger);
    color: #fff;
    font-size: 10px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-dropdown {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 4px;
    transition: var(--admin-transition);
}

.user-dropdown:hover {
    background: var(--admin-body-bg);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

.user-info {
    line-height: 1.3;
}

.user-info .name {
    font-weight: 500;
    font-size: 14px;
}

.user-info .role {
    font-size: 12px;
    color: var(--admin-text-muted);
}

/* Content Area */
.admin-content {
    padding: 25px;
}

/* Cards */
.admin-card {
    background: var(--admin-card-bg);
    border-radius: 8px;
    box-shadow: var(--admin-shadow);
    margin-bottom: 25px;
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--admin-border);
    background: #fafafa;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 25px;
}

.stat-card {
    background: var(--admin-card-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--admin-shadow);
    display: flex;
    align-items: center;
    gap: 15px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
}

.stat-icon.primary { background: var(--admin-primary); }
.stat-icon.info { background: var(--admin-info); }
.stat-icon.warning { background: var(--admin-warning); }
.stat-icon.danger { background: var(--admin-danger); }

.stat-content h4 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 5px;
}

.stat-content p {
    font-size: 13px;
    color: var(--admin-text-muted);
    margin: 0;
}

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

.data-table th {
    text-align: left;
    padding: 12px 15px;
    background: #fafafa;
    font-weight: 600;
    font-size: 13px;
    color: var(--admin-text-muted);
    text-transform: uppercase;
    border-bottom: 2px solid var(--admin-border);
}

.data-table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--admin-border);
    vertical-align: middle;
}

.data-table tbody tr:hover {
    background: #fafafa;
}

.data-table .thumbnail {
    width: 50px;
    height: 40px;
    object-fit: cover;
    border-radius: 4px;
}

.data-table .status {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.data-table .status.active {
    background: #e8f5e9;
    color: var(--admin-success);
}

.data-table .status.draft {
    background: #fff3e0;
    color: var(--admin-warning);
}

.data-table .status.inactive {
    background: #ffebee;
    color: var(--admin-danger);
}

.data-table .actions {
    display: flex;
    gap: 8px;
}

.data-table .actions a,
.data-table .actions button {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: var(--admin-transition);
}

.data-table .actions .btn-edit {
    background: #e3f2fd;
    color: var(--admin-info);
}

.data-table .actions .btn-delete {
    background: #ffebee;
    color: var(--admin-danger);
}

.data-table .actions a:hover,
.data-table .actions button:hover {
    opacity: 0.8;
}

/* Forms */
.admin-form .form-group {
    margin-bottom: 20px;
}

.admin-form .form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--admin-text);
}

.admin-form .form-label .required {
    color: var(--admin-danger);
}

.admin-form .form-control {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--admin-border);
    border-radius: 4px;
    font-size: 14px;
    transition: var(--admin-transition);
}

.admin-form .form-control:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.1);
}

.admin-form textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.admin-form .form-text {
    font-size: 12px;
    color: var(--admin-text-muted);
    margin-top: 5px;
}

.admin-form .form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--admin-transition);
    border: none;
}

.btn-primary {
    background: var(--admin-primary);
    color: #fff;
}

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

.btn-secondary {
    background: #e0e0e0;
    color: var(--admin-text);
}

.btn-secondary:hover {
    background: #d0d0d0;
}

.btn-danger {
    background: var(--admin-danger);
    color: #fff;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 12px 30px;
    font-size: 16px;
}

/* File Upload */
.file-upload-area {
    border: 2px dashed var(--admin-border);
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: var(--admin-transition);
}

.file-upload-area:hover {
    border-color: var(--admin-primary);
    background: #f9fbe7;
}

.file-upload-area i {
    font-size: 48px;
    color: var(--admin-text-muted);
    margin-bottom: 15px;
}

.file-upload-area p {
    color: var(--admin-text-muted);
    margin-bottom: 10px;
}

.file-preview {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.file-preview-item {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
}

.file-preview-item img {
    width: 100%;
    height: 100px;
    object-fit: cover;
}

.file-preview-item .remove-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 24px;
    height: 24px;
    background: var(--admin-danger);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 12px;
}

/* Pagination */
.admin-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.admin-pagination a,
.admin-pagination span {
    padding: 8px 14px;
    border: 1px solid var(--admin-border);
    border-radius: 4px;
    font-size: 14px;
}

.admin-pagination a:hover,
.admin-pagination span.active {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
    color: #fff;
}

/* Search & Filter */
.search-filter {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.search-box {
    flex: 1;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 10px 15px 10px 40px;
    border: 1px solid var(--admin-border);
    border-radius: 4px;
}

.search-box i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--admin-text-muted);
}

.filter-select {
    padding: 10px 15px;
    border: 1px solid var(--admin-border);
    border-radius: 4px;
    min-width: 150px;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--admin-transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-box {
    background: #fff;
    border-radius: 8px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: var(--admin-transition);
}

.modal-overlay.active .modal-box {
    transform: scale(1);
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--admin-text-muted);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--admin-border);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* Alerts */
.admin-alert {
    padding: 15px 20px;
    border-radius: 4px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-alert.success {
    background: #e8f5e9;
    color: var(--admin-success);
}

.admin-alert.error {
    background: #ffebee;
    color: var(--admin-danger);
}

.admin-alert.warning {
    background: #fff3e0;
    color: var(--admin-warning);
}

.admin-alert.info {
    background: #e3f2fd;
    color: var(--admin-info);
}

/* Media Gallery */
.media-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 15px;
}

.media-item {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
}

.media-item img {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.media-item .media-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    opacity: 0;
    transition: var(--admin-transition);
}

.media-item:hover .media-overlay {
    opacity: 1;
}

.media-item .media-overlay button {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: #fff;
    color: var(--admin-text);
    cursor: pointer;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 25px;
}

/* Sidebar Overlay (mobile) */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}
.sidebar-overlay.show {
    display: block;
}

/* Sidebar close button (mobile) */
.sidebar-close {
    display: none;
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(255,255,255,0.15);
    border: none;
    color: #fff;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    z-index: 10;
}
.sidebar-close:hover {
    background: rgba(255,255,255,0.25);
}

/* Responsive */
@media (max-width: 991px) {
    .admin-sidebar {
        left: -260px;
    }
    .admin-sidebar.show {
        left: 0;
    }
    .sidebar-close {
        display: flex;
    }
    .admin-main {
        margin-left: 0;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .media-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .admin-header {
        padding: 10px 15px;
    }
    .header-left {
        gap: 10px;
    }
    .page-title {
        font-size: 15px;
    }
    .header-right {
        gap: 10px;
    }
    .user-info {
        display: none;
    }
    .admin-content {
        padding: 15px;
    }
    .admin-card {
        margin-bottom: 15px;
    }
    .card-header {
        padding: 15px;
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }
    .card-header h3 {
        font-size: 14px;
    }
    .card-body {
        padding: 15px;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .data-table {
        font-size: 12px;
    }
    .data-table th,
    .data-table td {
        padding: 8px 10px;
    }
    /* Settings tabs responsive */
    .settings-tabs {
        gap: 2px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .settings-tabs::-webkit-scrollbar {
        display: none;
    }
    .settings-tab {
        padding: 8px 10px;
        font-size: 11px;
        flex-shrink: 0;
    }
    .settings-tab i {
        display: none;
    }
    .settings-subtabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        flex-wrap: nowrap;
    }
    .settings-subtabs::-webkit-scrollbar {
        display: none;
    }
    .settings-subtab {
        padding: 8px 12px;
        font-size: 11px;
        flex-shrink: 0;
    }
    .settings-subtab i {
        display: none;
    }
    /* Slider item responsive */
    .slider-item-body {
        grid-template-columns: 1fr !important;
    }
    .slider-image-upload {
        max-width: 100%;
        aspect-ratio: 16/9;
    }
    /* Save section responsive */
    .save-section {
        flex-direction: column;
        gap: 8px;
    }
    .save-section .btn-save,
    .save-section .btn-preview,
    .save-section .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .media-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .admin-form .form-row {
        grid-template-columns: 1fr;
    }
    .search-filter {
        flex-direction: column;
    }
    .admin-content {
        padding: 10px;
    }
    .page-title {
        font-size: 14px;
    }
}

/* TinyMCE Override */
.tox-tinymce {
    border-radius: 4px !important;
}