/**
 * Admin Panel Modern UI/UX
 * Design System & Components
 * by Vincenzo Ingrassia Photography
 */

/* ========== CSS Variables ========== */
:root {
    /* Colors - Light Mode */
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #818CF8;

    --success: #10B981;
    --success-dark: #059669;
    --warning: #F59E0B;
    --danger: #EF4444;
    --danger-dark: #DC2626;
    --info: #3B82F6;

    --bg-main: #F9FAFB;
    --bg-secondary: #F3F4F6;
    --bg-card: #FFFFFF;

    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;

    --border-color: #E5E7EB;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    --sidebar-width: 260px;
    --topbar-height: 70px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-main: #111827;
    --bg-secondary: #1F2937;
    --bg-card: #1F2937;

    --text-primary: #F9FAFB;
    --text-secondary: #D1D5DB;
    --text-muted: #9CA3AF;

    --border-color: #374151;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-main);
    transition: var(--transition);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

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

.admin-sidebar {
    width: var(--sidebar-width);
    background: var(--bg-card);
    border-right: 1px solid var(--border-color);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 1000;
    transition: var(--transition);
}

.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.admin-topbar {
    height: var(--topbar-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 999;
}

.admin-content {
    flex: 1;
    padding: 2rem;
}

/* ========== Sidebar ========== */
.sidebar-logo {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.sidebar-logo img {
    max-width: 120px;
    height: auto;
}

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

.sidebar-nav-item {
    display: flex;
    align-items: center;
    padding: 0.875rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border-left: 3px solid transparent;
}

.sidebar-nav-item:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    text-decoration: none;
}

.sidebar-nav-item.active {
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary);
    border-left-color: var(--primary);
}

#generateSitemapBtn {
    color: var(--success);
}

#generateSitemapBtn:hover {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-dark);
}

.sidebar-nav-item .material-symbols-outlined {
    margin-right: 0.75rem;
    font-size: 24px;
}

.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-card);
}

.storage-indicator {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.storage-bar {
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 3px;
    overflow: hidden;
}

.storage-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transition: width 0.5s ease;
}

/* ========== Topbar ========== */
.breadcrumb-custom {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.breadcrumb-custom li {
    display: flex;
    align-items: center;
    font-size: 0.875rem;
}

.breadcrumb-custom li:not(:last-child)::after {
    content: '›';
    margin-left: 0.5rem;
    color: var(--text-muted);
}

.breadcrumb-custom a {
    color: var(--text-secondary);
    text-decoration: none;
}

.breadcrumb-custom a:hover {
    color: var(--primary);
}

.breadcrumb-custom li:last-child {
    color: var(--text-primary);
    font-weight: 500;
}

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

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ========== Cards ========== */
.card-modern {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card-modern:hover {
    box-shadow: var(--shadow);
}

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

.card-header-modern h3 {
    margin: 0;
    font-size: 1.125rem;
}

.card-body-modern {
    padding: 1.5rem;
}

.card-footer-modern {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

/* ========== Buttons ========== */
.btn-modern {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-success:hover {
    background: var(--success-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-danger:hover {
    background: var(--danger-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
    transform: translateY(-2px);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
}

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

.form-label-modern {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-input-modern {
    width: 100%;
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition);
}

.form-input-modern:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-input-modern::placeholder {
    color: var(--text-muted);
}

/* File Upload Modern */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-secondary);
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--primary);
    background: rgba(79, 70, 229, 0.05);
}

.upload-area .material-symbols-outlined {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 1rem;
}

.upload-area p {
    margin: 0.5rem 0;
    color: var(--text-secondary);
}

.upload-area .file-info {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Progress Bar */
.progress-modern {
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-bar-modern {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transition: width 0.3s ease;
    position: relative;
}

.progress-bar-modern::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

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

.table-modern thead {
    background: var(--bg-secondary);
}

.table-modern th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
}

.table-modern td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.table-modern tbody tr {
    transition: var(--transition);
}

.table-modern tbody tr:hover {
    background: var(--bg-secondary);
}

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

.table-action-btn {
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.table-action-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

.table-action-btn.view { color: var(--info); }
.table-action-btn.edit { color: var(--warning); }
.table-action-btn.delete { color: var(--danger); }
.table-action-btn.success { color: var(--success); }

/* ========== Modal ========== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal-container {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: var(--transition);
}

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

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

.modal-header h3 {
    margin: 0;
}

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

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

.modal-body {
    padding: 1.5rem;
    max-height: 60vh;
    overflow-y: auto;
}

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

/* ========== Toast Notifications ========== */
.toast-container {
    position: fixed;
    top: 5rem;
    right: 2rem;
    z-index: 99999;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.toast {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 1rem 1.25rem;
    min-width: 300px;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-left: 4px solid var(--primary);
    transform: translateX(400px);
    opacity: 0;
    animation: slideIn 0.3s forwards;
}

@keyframes slideIn {
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.removing {
    animation: slideOut 0.3s forwards;
}

@keyframes slideOut {
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }
.toast.info { border-left-color: var(--info); }

.toast-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.toast.success .toast-icon { color: var(--success); }
.toast.error .toast-icon { color: var(--danger); }
.toast.warning .toast-icon { color: var(--warning); }
.toast.info .toast-icon { color: var(--info); }

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

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

.toast-close {
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition);
}

.toast-close:hover {
    color: var(--text-primary);
}

/* ========== Image Gallery ========== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.gallery-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 1;
    cursor: move;
    border: 2px solid transparent;
    transition: var(--transition);
}

.gallery-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

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

.gallery-item-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    opacity: 0;
    transition: var(--transition);
}

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

.gallery-item .favorite-active {
    background: #F59E0B !important;
    color: white !important;
    border-color: #F59E0B !important;
}

.gallery-item .favorite-active:hover {
    background: #D97706 !important;
    border-color: #D97706 !important;
}

/* ========== Badge ========== */
.badge-modern {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-primary {
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

/* ========== Loading States ========== */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--bg-secondary);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99998;
}

/* ========== Utilities ========== */
.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-center { justify-content: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

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

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }

/* ========== Responsive ========== */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 0;
    }

    .admin-sidebar {
        transform: translateX(-100%);
    }

    .admin-sidebar.mobile-open {
        transform: translateX(0);
    }

    .admin-main {
        margin-left: 0;
    }

    .admin-topbar {
        padding: 0 1rem;
    }

    .admin-content {
        padding: 1rem;
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .toast-container {
        right: 1rem;
        left: 1rem;
    }

    .toast {
        min-width: auto;
    }
}