/* === CSS Variables for Premium Dark/Glassmorphism Theme === */
:root {
    --bg-color: #0f172a;
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --secondary: rgba(255, 255, 255, 0.1);
    --secondary-hover: rgba(255, 255, 255, 0.2);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --danger: #ef4444;
    --success: #22c55e;
    
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Dynamic Background */
.app-background {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: radial-gradient(circle at 15% 50%, rgba(99, 102, 241, 0.15), transparent 25%),
                radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.15), transparent 25%);
    z-index: -1;
}

/* Layout */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
    padding: 1rem;
    gap: 1rem;
}

/* Glassmorphism Utilities */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.glass-pane {
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 4px 24px rgba(0,0,0,0.2);
    border-radius: var(--radius-lg);
}

/* Sidebar */
.sidebar {
    width: 160px;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    padding: 1.0rem;
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 2.0rem;
}

.logo-icon-bg {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    width: 80px;
    height: 80px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.0rem;
}

.logo h2 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-links li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-links li:hover {
    background: var(--secondary);
    color: var(--text-primary);
}

.nav-links li.active {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.15), transparent);
    border-left: 4px solid var(--primary);
    color: var(--primary);
}

.nav-links li.active i {
    color: var(--primary);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.tab-pane {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 2rem;
    overflow-y: auto;
    animation: fadeIn 0.4s ease forwards;
}

.tab-pane.hidden {
    display: none;
}

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

.tab-header {
    margin-bottom: 2rem;
}

.tab-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #a5b4fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tab-header p {
    color: var(--text-secondary);
    font-size: 0.5rem;
}

.content-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.0rem;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(255,255,255,0.02);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.upload-icon.small {
    font-size: 2rem;
    margin-bottom: 0;
}

.upload-zone.small {
    padding: 1.5rem;
}

.upload-zone.row-layout {
    flex-direction: row;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    text-align: left;
}

.upload-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.upload-zone p strong {
    color: var(--primary);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: 'Inter', sans-serif;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    box-shadow: none;
}

.btn-outline:hover {
    background: rgba(99, 102, 241, 0.1);
    box-shadow: none;
}

.full-width {
    width: 100%;
}

.mt-2 {
    margin-top: 1rem;
}

/* Action Bar */
.action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.action-bar.hidden {
    display: none;
}

.file-count {
    color: var(--text-secondary);
    font-weight: 500;
}

.action-buttons {
    display: flex;
    gap: 1rem;
}

/* Items Grid */
.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    padding-bottom: 2rem;
}

.item-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.item-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.item-preview {
    height: 200px;
    width: 100%;
    background: #000;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.item-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.item-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.4rem;
    opacity: 0;
    transition: var(--transition);
}

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

.btn-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.2);
    color: white;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.btn-icon:hover {
    background: var(--primary);
    transform: scale(1.1);
}

.btn-icon.danger:hover {
    background: var(--danger);
}

.item-info {
    padding: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0,0,0,0.2);
}

.item-name {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.page-badge {
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 900;
    padding: 2px 6px;
    border-radius: 4px;
}

.sortable-ghost {
    opacity: 0.4;
    border: 2px dashed var(--primary);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    opacity: 1;
    transition: var(--transition);
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    width: 100%;
    max-width: 1200px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-content.small-modal {
    max-width: 500px;
}

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

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

.btn-close:hover {
    color: white;
}

/* Editor Layout */
.editor-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
    min-height: 60vh;
}

.editor-canvas-container {
    flex: 1;
    background: #000;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    overflow: hidden;
}

.canvas-wrapper {
    max-width: 100%;
    max-height: 100%;
    /* Let cropper handle sizing */
}

#editor-image-preview {
    max-width: 100%;
    max-height: 100%;
    display: block;
}

.editor-sidebar {
    width: 320px;
    border-left: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
}

.editor-tabs {
    display: flex;
    border-bottom: 1px solid var(--glass-border);
}

.editor-tab {
    flex: 1;
    background: transparent;
    border: none;
    padding: 1rem;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
}

.editor-tab:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.05);
}

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

.editor-tab-content {
    padding: 1.5rem;
    flex: 1;
    overflow-y: auto;
}

.editor-tab-content.hidden {
    display: none;
}

.control-group {
    margin-bottom: 1.5rem;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

input[type="range"] {
    width: 100%;
    accent-color: var(--primary);
}

input[type="text"] {
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--glass-border);
    color: white;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    font-family: inherit;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
}

.color-pickers {
    display: flex;
    gap: 1rem;
}

.color-field {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

input[type="color"] {
    width: 150%;
    height: 40px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: transparent;
}

.crop-ratios {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.ratio-btn {
    flex: 1;
    min-width: 60px;
    padding: 0.5rem;
    background: var(--secondary);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.ratio-btn:hover, .ratio-btn.active {
    background: var(--primary);
    border-color: var(--primary);
}

.added-texts {
    border-top: 1px solid var(--glass-border);
    padding-top: 1rem;
}

.added-texts h4 {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.text-elements-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.text-item-ui {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.text-item-ui button {
    background: transparent;
    border: none;
    color: var(--danger);
    cursor: pointer;
}

.editor-actions {
    padding: 1.5rem;
    border-top: 1px solid var(--glass-border);
    display: flex;
    gap: 1rem;
}

.editor-actions .btn {
    flex: 1;
}

.help-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.help-text.note {
    margin-top: 1rem;
    font-style: italic;
    opacity: 0.7;
}

/* Scanner UI */
.camera-scanner-layout {
    display: flex;
    flex-direction: column;
    padding: 0; /* Remove tab padding for full width if desired, or keep and adjust */
    height: 100%;
}

.scanner-header {
    padding: 1.5rem 2rem 0;
    margin-bottom: 1rem;
}

.scanner-main-area {
    flex: 1;
    background: #000;
    position: relative;
    border-radius: var(--radius-lg);
    margin: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#scanner-canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

#scanner-crop-ui {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
}

.crop-point {
    width: 24px;
    height: 24px;
    background: white;
    border: 3px solid var(--primary);
    border-radius: 50%;
    position: absolute;
    transform: translate(-50%, -50%);
    cursor: grab;
    z-index: 10;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.crop-point:active {
    cursor: grabbing;
    background: var(--primary);
}

.scanner-status {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(0,0,0,0.6);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    z-index: 5;
}

/* Toolbar */
.scanner-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    margin: 1rem 2rem 0;
    border-radius: var(--radius-lg);
}

.toolbar-group {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex: 1;
}

.edit-group {
    justify-content: flex-end;
}

.btn-capture-main:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.slider-popover-wrapper {
    position: relative;
}

.slider-icon {
    font-size: 1.2rem;
    color: white;
    cursor: pointer;
    background: rgba(255,255,255,0.2);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.slider-icon:hover, .slider-icon.active {
    background: var(--primary);
}

.sliders-popup {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
    border-radius: var(--radius-md);
    min-width: 200px;
    z-index: 100;
}

.sliders-popup label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.sliders-popup input[type="range"] {
    flex: 1;
}

/* Footer */
.scanner-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 1rem 2rem 2rem;
    padding: 1rem;
    border-radius: var(--radius-md);
    min-height: 100px;
}

.scanner-thumbnails {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    flex: 1;
    padding-right: 1rem;
}

.scanned-thumb {
    width: 60px;
    height: 80px;
    background: #000;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: var(--transition);
}

.scanned-thumb.active {
    border-color: var(--primary);
}

.scanned-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.scanner-actions {
    display: flex;
    gap: 1rem;
    flex-shrink: 0;
}

.pagination-info {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.pagination-info strong {
    color: var(--primary);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(15, 23, 42, 0.9);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    color: white;
    transition: var(--transition);
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255,255,255,0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.1);
}

::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.4);
}