/**
 * Artist Portfolio - Admin Stylesheet
 * Clean, functional admin interface
 */

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

:root {
    --admin-primary: #5C6BC0;
    --admin-secondary: #7E57C2;
    --admin-success: #66BB6A;
    --admin-danger: #EF5350;
    --admin-warning: #FFA726;
    --admin-info: #29B6F6;
    --admin-dark: #37474F;
    --admin-light: #ECEFF1;
    --admin-bg: #F5F7FA;
    --admin-sidebar: #263238;
    --admin-card: #FFFFFF;
    --admin-text: #37474F;
    --admin-text-light: #78909C;
    --admin-border: #E0E0E0;
    --admin-radius: 12px;
    --admin-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --admin-transition: all 0.3s ease;
}

html {
    font-size: 15px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--admin-bg);
    color: var(--admin-text);
    line-height: 1.6;
    min-height: 100vh;
}

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

a:hover {
    color: var(--admin-secondary);
}

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

/* ===== Sidebar ===== */
.admin-sidebar {
    width: 260px;
    background: var(--admin-sidebar);
    color: white;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 100;
    transition: var(--admin-transition);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: white;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-logo i {
    color: var(--admin-primary);
}

.sidebar-logo span {
    font-size: 0.7rem;
    background: var(--admin-primary);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    margin-left: auto;
}

.sidebar-nav {
    padding: 1rem 0;
}

.nav-section {
    padding: 0.5rem 1.5rem;
    margin-top: 1rem;
}

.nav-section-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.5rem;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--admin-transition);
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.05);
    color: white;
}

.nav-link.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-left-color: var(--admin-primary);
}

.nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}

.nav-link .badge {
    margin-left: auto;
    background: var(--admin-danger);
    color: white;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 10px;
}

/* ===== Main Content ===== */
.admin-main {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== Top Bar ===== */
.admin-topbar {
    background: var(--admin-card);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--admin-border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.topbar-title {
    font-size: 1.3rem;
    font-weight: 600;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.topbar-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--admin-light);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--admin-transition);
    position: relative;
}

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

.topbar-btn .badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--admin-danger);
    color: white;
    font-size: 0.65rem;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== Content Area ===== */
.admin-content {
    flex: 1;
    padding: 2rem;
}

/* ===== Cards ===== */
.card {
    background: var(--admin-card);
    border-radius: var(--admin-radius);
    box-shadow: var(--admin-shadow);
    margin-bottom: 1.5rem;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--admin-border);
    background: var(--admin-light);
    border-radius: 0 0 var(--admin-radius) var(--admin-radius);
}

/* ===== Stats Grid ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--admin-card);
    border-radius: var(--admin-radius);
    padding: 1.5rem;
    box-shadow: var(--admin-shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--admin-transition);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.stat-icon.primary { background: linear-gradient(135deg, var(--admin-primary), var(--admin-secondary)); }
.stat-icon.success { background: linear-gradient(135deg, #43A047, #66BB6A); }
.stat-icon.warning { background: linear-gradient(135deg, #FB8C00, #FFA726); }
.stat-icon.info { background: linear-gradient(135deg, #039BE5, #29B6F6); }

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--admin-text-light);
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

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

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--admin-transition);
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(92, 107, 192, 0.15);
}

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

.form-hint {
    font-size: 0.8rem;
    color: var(--admin-text-light);
    margin-top: 0.4rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2378909C' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

input[type="color"].form-control {
    padding: 0.25rem;
    height: 45px;
    cursor: pointer;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
}

.form-switch input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.switch-slider {
    width: 50px;
    height: 26px;
    background: var(--admin-border);
    border-radius: 13px;
    cursor: pointer;
    transition: var(--admin-transition);
    position: relative;
}

.switch-slider::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: var(--admin-transition);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.form-switch input:checked + .switch-slider {
    background: var(--admin-primary);
}

.form-switch input:checked + .switch-slider::before {
    transform: translateX(24px);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--admin-transition);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

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

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

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--admin-border);
    color: var(--admin-text);
}

.btn-outline:hover {
    background: var(--admin-light);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-group {
    display: flex;
    gap: 0.5rem;
}

/* ===== Tables ===== */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

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

.table th {
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--admin-text-light);
    background: var(--admin-light);
}

.table tbody tr:hover {
    background: rgba(0, 0, 0, 0.02);
}

.table-actions {
    display: flex;
    gap: 0.5rem;
}

.table-action-btn {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--admin-transition);
    background: var(--admin-light);
    color: var(--admin-text);
}

.table-action-btn:hover {
    background: var(--admin-primary);
    color: white;
}

.table-action-btn.delete:hover {
    background: var(--admin-danger);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge.published {
    background: #E8F5E9;
    color: #2E7D32;
}

.status-badge.draft {
    background: #FFF3E0;
    color: #EF6C00;
}

.status-badge.unread {
    background: #E3F2FD;
    color: #1565C0;
}

/* ===== Tabs ===== */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--admin-border);
    margin-bottom: 1.5rem;
}

.tab-btn {
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 0.95rem;
    cursor: pointer;
    color: var(--admin-text-light);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: var(--admin-transition);
}

.tab-btn:hover {
    color: var(--admin-text);
}

.tab-btn.active {
    color: var(--admin-primary);
    border-bottom-color: var(--admin-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ===== Image Upload ===== */
.image-upload-area {
    border: 2px dashed var(--admin-border);
    border-radius: var(--admin-radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--admin-transition);
    background: var(--admin-light);
}

.image-upload-area:hover {
    border-color: var(--admin-primary);
    background: rgba(92, 107, 192, 0.05);
}

.image-upload-area.dragover {
    border-color: var(--admin-primary);
    background: rgba(92, 107, 192, 0.1);
}

.image-upload-icon {
    font-size: 2.5rem;
    color: var(--admin-text-light);
    margin-bottom: 1rem;
}

.image-upload-text {
    color: var(--admin-text-light);
    margin-bottom: 0.5rem;
}

.image-upload-hint {
    font-size: 0.8rem;
    color: var(--admin-text-light);
    opacity: 0.7;
}

.image-grid-admin {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.image-grid-item-admin {
    position: relative;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    cursor: grab;
    box-shadow: var(--admin-shadow);
}

.image-grid-item-admin:active {
    cursor: grabbing;
}

.image-grid-item-admin img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-grid-item-admin .overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    opacity: 0;
    transition: var(--admin-transition);
}

.image-grid-item-admin:hover .overlay {
    opacity: 1;
}

.image-grid-item-admin .overlay button {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: white;
    color: var(--admin-text);
    cursor: pointer;
    transition: var(--admin-transition);
}

.image-grid-item-admin .overlay button:hover {
    background: var(--admin-danger);
    color: white;
}

.image-grid-item-admin .order-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--admin-primary);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.image-preview {
    max-width: 200px;
    border-radius: 8px;
    margin-top: 1rem;
}

/* ===== Alerts ===== */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: #E8F5E9;
    color: #2E7D32;
    border: 1px solid #C8E6C9;
}

.alert-error {
    background: #FFEBEE;
    color: #C62828;
    border: 1px solid #FFCDD2;
}

.alert-warning {
    background: #FFF3E0;
    color: #EF6C00;
    border: 1px solid #FFE0B2;
}

.alert-info {
    background: #E3F2FD;
    color: #1565C0;
    border: 1px solid #BBDEFB;
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--admin-transition);
}

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

.modal {
    background: var(--admin-card);
    border-radius: var(--admin-radius);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(-20px);
    transition: var(--admin-transition);
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--admin-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--admin-transition);
}

.modal-close:hover {
    background: var(--admin-danger);
    color: white;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--admin-border);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* ===== 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-secondary) 100%);
    padding: 2rem;
}

.login-card {
    background: white;
    border-radius: var(--admin-radius);
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

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

.login-logo i {
    font-size: 3rem;
    color: var(--admin-primary);
}

.login-logo h1 {
    font-size: 1.5rem;
    margin-top: 0.5rem;
    color: var(--admin-text);
}

.login-form .form-group {
    margin-bottom: 1.5rem;
}

.login-form .btn {
    width: 100%;
    padding: 1rem;
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-state-icon {
    font-size: 4rem;
    color: var(--admin-text-light);
    opacity: 0.5;
    margin-bottom: 1rem;
}

.empty-state h3 {
    color: var(--admin-text-light);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--admin-text-light);
    opacity: 0.7;
    margin-bottom: 1.5rem;
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--admin-text-light); }
.text-success { color: var(--admin-success); }
.text-danger { color: var(--admin-danger); }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    
    .admin-sidebar.open {
        transform: translateX(0);
    }
    
    .admin-main {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    .admin-content {
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ===== Drag & Drop Sortable ===== */
.sortable-ghost {
    opacity: 0.4;
}

.sortable-chosen {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.sortable-drag {
    opacity: 1;
}