/* ========================================
   IMAGE TO PDF CONVERTER - RESPONSIVE CSS
   Full support for Light & Dark themes
   ======================================== */

/* CSS Variables */
:root {
    --i2p-radius-sm: 8px;
    --i2p-radius-md: 12px;
    --i2p-radius-lg: 16px;
    --i2p-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --i2p-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --i2p-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --i2p-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --i2p-success: #10b981;
    --i2p-warning: #f59e0b;
    --i2p-danger: #ef4444;
    --i2p-info: #3b82f6;
}

/* ==========================================
   BASE CONTAINER
   ========================================== */
.i2p-container {
    font-family: var(--font-family, 'Inter', -apple-system, BlinkMacSystemFont, sans-serif);
    max-width: 100%;
    box-sizing: border-box;
}

.i2p-container * {
    box-sizing: border-box;
}

/* ==========================================
   HEADER
   ========================================== */
.i2p-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem;
    background: linear-gradient(135deg, rgba(var(--primary-rgb, 99, 102, 241), 0.08), rgba(var(--secondary-rgb, 139, 92, 246), 0.05));
    border-radius: var(--i2p-radius-lg);
    border: 1px solid rgba(var(--primary-rgb, 99, 102, 241), 0.1);
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.i2p-header-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.i2p-header-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color, #6366f1), var(--secondary-color, #8b5cf6));
    border-radius: var(--i2p-radius-md);
    box-shadow: 0 6px 16px rgba(var(--primary-rgb, 99, 102, 241), 0.3);
    flex-shrink: 0;
}

.i2p-header-icon svg {
    width: 26px;
    height: 26px;
    color: white;
}

.i2p-header-text h2 {
    margin: 0 0 0.2rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-color, #1f2937);
}

.i2p-header-text p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-color, #1f2937);
    opacity: 0.7;
}

.i2p-header-actions {
    display: flex;
    gap: 0.5rem;
}

.i2p-btn-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: var(--i2p-radius-sm);
    background: var(--card-background, #ffffff);
    color: var(--text-color, #1f2937);
    cursor: pointer;
    transition: var(--i2p-transition);
}

.i2p-btn-icon svg {
    width: 20px;
    height: 20px;
}

.i2p-btn-icon:hover {
    border-color: var(--primary-color, #6366f1);
    color: var(--primary-color, #6366f1);
    transform: translateY(-1px);
}

/* ==========================================
   PRIVACY NOTICE
   ========================================== */
.i2p-privacy {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--i2p-radius-md);
    margin-bottom: 1.25rem;
    font-size: 0.85rem;
    color: var(--text-color, #1f2937);
}

.i2p-privacy svg {
    width: 20px;
    height: 20px;
    color: var(--i2p-success);
    flex-shrink: 0;
}

/* ==========================================
   MAIN LAYOUT
   ========================================== */
.i2p-main {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 1.25rem;
    min-height: 500px;
}

/* ==========================================
   UPLOAD SECTION
   ========================================== */
.i2p-upload-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.i2p-upload-area {
    border: 2px dashed var(--border-color, #e5e7eb);
    border-radius: var(--i2p-radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--i2p-transition);
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.02);
    position: relative;
}

.i2p-upload-area:hover,
.i2p-upload-area.dragover {
    border-color: var(--primary-color, #6366f1);
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.06);
    transform: translateY(-2px);
}

.i2p-upload-area.dragover {
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb, 99, 102, 241), 0.15);
}

.i2p-upload-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(var(--primary-rgb, 99, 102, 241), 0.12), rgba(var(--secondary-rgb, 139, 92, 246), 0.08));
    border-radius: 50%;
}

.i2p-upload-icon svg {
    width: 36px;
    height: 36px;
    color: var(--primary-color, #6366f1);
}

.i2p-upload-content h3 {
    margin: 0 0 0.35rem;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-color, #1f2937);
}

.i2p-upload-content p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-color, #1f2937);
    opacity: 0.6;
}

.i2p-file-types {
    display: inline-block;
    margin-top: 0.75rem;
    padding: 0.35rem 0.75rem;
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.08);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--primary-color, #6366f1);
}

/* ==========================================
   PREVIEW SECTION
   ========================================== */
.i2p-preview-section {
    background: var(--card-background, #ffffff);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: var(--i2p-radius-lg);
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.i2p-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color, #e5e7eb);
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.i2p-preview-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-color, #1f2937);
}

.i2p-preview-header h3 svg {
    width: 18px;
    height: 18px;
    color: var(--primary-color, #6366f1);
}

.i2p-preview-actions {
    display: flex;
    gap: 0.5rem;
}

.i2p-btn-sm {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--i2p-transition);
    border: none;
}

.i2p-btn-sm svg {
    width: 14px;
    height: 14px;
}

.i2p-btn-outline {
    background: transparent;
    border: 1px solid var(--border-color, #e5e7eb);
    color: var(--text-color, #1f2937);
}

.i2p-btn-outline:hover {
    border-color: var(--primary-color, #6366f1);
    color: var(--primary-color, #6366f1);
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.05);
}

.i2p-btn-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--i2p-danger);
}

.i2p-btn-danger:hover {
    background: var(--i2p-danger);
    color: white;
}

.i2p-drag-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.04);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-color, #1f2937);
    opacity: 0.7;
    margin-top: 0.75rem;
    margin-bottom: 0;
}

.i2p-drag-hint svg {
    width: 14px;
    height: 14px;
}

/* ==========================================
   PAGE INFO BAR
   ========================================== */
.i2p-page-info-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 0.65rem 0.85rem;
    background: linear-gradient(135deg, rgba(var(--primary-rgb, 99, 102, 241), 0.06), rgba(var(--secondary-rgb, 139, 92, 246), 0.03));
    border-radius: var(--i2p-radius-sm);
    margin-bottom: 0.75rem;
}

.i2p-info-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-color, #1f2937);
}

.i2p-info-item svg {
    width: 16px;
    height: 16px;
    color: var(--primary-color, #6366f1);
}

.i2p-info-item span {
    font-weight: 700;
    color: var(--primary-color, #6366f1);
}

/* ==========================================
   PDF PREVIEW CONTAINER
   ========================================== */
.i2p-pdf-preview-container {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
    background: linear-gradient(135deg, #f0f0f0 0%, #e8e8e8 100%);
    border-radius: var(--i2p-radius-md);
    min-height: 300px;
}

.dark-theme .i2p-pdf-preview-container,
[data-theme="dark"] .i2p-pdf-preview-container {
    background: linear-gradient(135deg, #1a1d24 0%, #0f1117 100%);
}

.i2p-pdf-preview-container::-webkit-scrollbar {
    width: 8px;
}

.i2p-pdf-preview-container::-webkit-scrollbar-thumb {
    background: var(--border-color, #e5e7eb);
    border-radius: 4px;
}

.i2p-pdf-preview-container::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color, #6366f1);
}

/* PDF Pages Grid */
.i2p-pdf-pages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
    padding: 0.5rem;
}

/* Individual PDF Page Preview */
.i2p-pdf-page {
    position: relative;
    background: #ffffff;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15), 0 0 1px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    cursor: grab;
    transition: var(--i2p-transition);
    aspect-ratio: var(--page-ratio, 0.707);
}

.i2p-pdf-page.landscape {
    aspect-ratio: var(--page-ratio, 1.414);
}

.i2p-pdf-page:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2), 0 0 1px rgba(0, 0, 0, 0.1);
}

.i2p-pdf-page.selected {
    outline: 3px solid var(--primary-color, #6366f1);
    outline-offset: 2px;
}

.i2p-pdf-page.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.i2p-pdf-page.drag-over {
    outline: 3px dashed var(--primary-color, #6366f1);
}

/* Page Number Badge */
.i2p-page-number {
    position: absolute;
    top: 6px;
    left: 6px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color, #6366f1), var(--secondary-color, #8b5cf6));
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 50%;
    z-index: 10;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* Page Content Area */
.i2p-page-content {
    position: absolute;
    inset: 0;
    display: grid;
    padding: var(--page-margin, 8px);
    gap: 4px;
    background: inherit;
}

.i2p-page-content.grid-1x1 {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
}

.i2p-page-content.grid-1x2 {
    grid-template-columns: 1fr;
    grid-template-rows: repeat(2, 1fr);
}

.i2p-page-content.grid-2x2 {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
}

.i2p-page-content.grid-2x3 {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(3, 1fr);
}

.i2p-page-content.grid-3x3 {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
}

/* Image Cell in Grid */
.i2p-page-cell {
    position: relative;
    display: flex;
    overflow: hidden;
    border-radius: 2px;
    background: rgba(0, 0, 0, 0.03);
}

/* Alignment Classes */
.i2p-page-cell.align-top-left {
    align-items: flex-start;
    justify-content: flex-start;
}

.i2p-page-cell.align-top-center {
    align-items: flex-start;
    justify-content: center;
}

.i2p-page-cell.align-top-right {
    align-items: flex-start;
    justify-content: flex-end;
}

.i2p-page-cell.align-middle-left {
    align-items: center;
    justify-content: flex-start;
}

.i2p-page-cell.align-middle-center {
    align-items: center;
    justify-content: center;
}

.i2p-page-cell.align-middle-right {
    align-items: center;
    justify-content: flex-end;
}

.i2p-page-cell.align-bottom-left {
    align-items: flex-end;
    justify-content: flex-start;
}

.i2p-page-cell.align-bottom-center {
    align-items: flex-end;
    justify-content: center;
}

.i2p-page-cell.align-bottom-right {
    align-items: flex-end;
    justify-content: flex-end;
}

/* Image in Cell */
.i2p-page-cell img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 1px;
}

.i2p-page-cell.fit-contain img {
    object-fit: contain;
}

.i2p-page-cell.fit-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.i2p-page-cell.fit-original img {
    max-width: none;
    max-height: none;
    width: auto;
    height: auto;
}

/* Empty Cell Placeholder */
.i2p-page-cell.empty {
    background: repeating-linear-gradient(45deg,
            transparent,
            transparent 5px,
            rgba(0, 0, 0, 0.03) 5px,
            rgba(0, 0, 0, 0.03) 10px);
}

/* Page Remove Button */
.i2p-page-remove {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    transition: var(--i2p-transition);
    z-index: 10;
}

.i2p-page-remove svg {
    width: 14px;
    height: 14px;
}

.i2p-pdf-page:hover .i2p-page-remove {
    opacity: 1;
}

.i2p-page-remove:hover {
    background: var(--i2p-danger);
    transform: scale(1.1);
}

/* Page Footer Info */
.i2p-page-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 4px 8px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.6));
    display: flex;
    justify-content: space-between;
    align-items: center;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.i2p-pdf-page:hover .i2p-page-footer {
    opacity: 1;
}

.i2p-page-footer span {
    font-size: 0.6rem;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

/* Empty State */
.i2p-pdf-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    gap: 0.75rem;
    color: var(--text-color, #1f2937);
    opacity: 0.5;
}

.i2p-pdf-empty svg {
    width: 48px;
    height: 48px;
}

.i2p-pdf-empty span {
    font-size: 0.85rem;
}

.i2p-preview-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-right: 0.25rem;
}

.i2p-preview-list::-webkit-scrollbar {
    width: 6px;
}

.i2p-preview-list::-webkit-scrollbar-thumb {
    background: var(--border-color, #e5e7eb);
    border-radius: 3px;
}

.i2p-preview-list::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color, #6366f1);
}

/* Image Preview Item */
.i2p-preview-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem;
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.02);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: var(--i2p-radius-sm);
    cursor: grab;
    transition: var(--i2p-transition);
}

.i2p-preview-item:hover {
    border-color: var(--primary-color, #6366f1);
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.05);
}

.i2p-preview-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.i2p-preview-item.drag-over {
    border-color: var(--primary-color, #6366f1);
    box-shadow: 0 0 0 2px rgba(var(--primary-rgb, 99, 102, 241), 0.2);
}

.i2p-item-handle {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 0.25rem;
    color: var(--text-color, #1f2937);
    opacity: 0.4;
}

.i2p-item-handle span {
    display: block;
    width: 12px;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
}

.i2p-item-thumb {
    width: 48px;
    height: 48px;
    border-radius: 6px;
    overflow: hidden;
    background: var(--border-color, #e5e7eb);
    flex-shrink: 0;
}

.i2p-item-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.i2p-item-info {
    flex: 1;
    min-width: 0;
}

.i2p-item-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color, #1f2937);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.2rem;
}

.i2p-item-meta {
    font-size: 0.7rem;
    color: var(--text-color, #1f2937);
    opacity: 0.6;
}

.i2p-item-remove {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-color, #1f2937);
    opacity: 0.5;
    cursor: pointer;
    transition: var(--i2p-transition);
}

.i2p-item-remove svg {
    width: 16px;
    height: 16px;
}

.i2p-item-remove:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--i2p-danger);
    opacity: 1;
}

/* ==========================================
   SETTINGS SECTION
   ========================================== */
.i2p-settings-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Tabs */
.i2p-tabs {
    display: flex;
    gap: 0.35rem;
    padding: 0.35rem;
    background: var(--card-background, #ffffff);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: var(--i2p-radius-md);
}

.i2p-tab {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.6rem 0.5rem;
    background: transparent;
    border: none;
    border-radius: var(--i2p-radius-sm);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-color, #1f2937);
    cursor: pointer;
    transition: var(--i2p-transition);
}

.i2p-tab svg {
    width: 18px;
    height: 18px;
}

.i2p-tab:hover {
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.08);
    color: var(--primary-color, #6366f1);
}

.i2p-tab.active {
    background: linear-gradient(135deg, var(--primary-color, #6366f1), var(--secondary-color, #8b5cf6));
    color: white;
    box-shadow: 0 4px 12px rgba(var(--primary-rgb, 99, 102, 241), 0.3);
}

/* Tab Panels */
.i2p-tab-panels {
    flex: 1;
    background: var(--card-background, #ffffff);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: var(--i2p-radius-md);
    overflow: hidden;
}

.i2p-panel {
    display: none;
    padding: 1rem;
    max-height: 450px;
    overflow-y: auto;
}

.i2p-panel.active {
    display: block;
    animation: fadeSlideIn 0.25s ease;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Setting Groups */
.i2p-setting-group {
    margin-bottom: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-color, #e5e7eb);
}

.i2p-setting-group:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.i2p-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-color, #1f2937);
    margin-bottom: 0.75rem;
}

.i2p-label svg {
    width: 16px;
    height: 16px;
    color: var(--primary-color, #6366f1);
}

/* Button Groups */
.i2p-btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.i2p-btn-group-vertical {
    flex-direction: column;
}

.i2p-option-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.55rem 0.65rem;
    background: transparent;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-color, #1f2937);
    cursor: pointer;
    transition: var(--i2p-transition);
    min-width: fit-content;
}

.i2p-option-btn svg {
    width: 16px;
    height: 16px;
}

.i2p-option-btn:hover {
    border-color: var(--primary-color, #6366f1);
    color: var(--primary-color, #6366f1);
}

.i2p-option-btn.active {
    background: linear-gradient(135deg, var(--primary-color, #6366f1), var(--secondary-color, #8b5cf6));
    border-color: transparent;
    color: white;
}

.i2p-btn-group-vertical .i2p-option-btn {
    justify-content: flex-start;
    flex-direction: column;
    align-items: flex-start;
    padding: 0.75rem;
}

.i2p-btn-group-vertical .i2p-option-btn svg {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
}

.i2p-option-desc {
    font-size: 0.65rem;
    font-weight: 400;
    opacity: 0.7;
    margin-top: 0.15rem;
}

/* Custom Size Inputs */
.i2p-custom-size {
    margin-top: 0.75rem;
    padding: 0.75rem;
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.03);
    border-radius: var(--i2p-radius-sm);
}

.i2p-input-row {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
}

.i2p-input-group {
    flex: 1;
}

.i2p-input-group label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-color, #1f2937);
    opacity: 0.7;
    margin-bottom: 0.3rem;
}

.i2p-input-group input,
.i2p-input-group select,
.i2p-input,
.i2p-select {
    width: 100%;
    padding: 0.5rem 0.65rem;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 6px;
    background: var(--background-color, #f9fafb);
    color: var(--text-color, #1f2937);
    font-size: 0.8rem;
    transition: var(--i2p-transition);
}

.i2p-input-group input:focus,
.i2p-input-group select:focus,
.i2p-input:focus,
.i2p-select:focus {
    outline: none;
    border-color: var(--primary-color, #6366f1);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb, 99, 102, 241), 0.1);
}

.i2p-input-separator {
    color: var(--text-color, #1f2937);
    opacity: 0.5;
    padding-bottom: 0.5rem;
}

/* Margin Preview */
.i2p-margin-preview {
    margin-top: 0.75rem;
    display: flex;
    justify-content: center;
}

.i2p-margin-box {
    width: 80px;
    height: 100px;
    border: 2px solid var(--border-color, #e5e7eb);
    border-radius: 4px;
    position: relative;
    background: white;
}

.i2p-margin-val {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--primary-color, #6366f1);
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

/* Color Options */
.i2p-color-options {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.i2p-color-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 2px solid var(--border-color, #e5e7eb);
    cursor: pointer;
    transition: var(--i2p-transition);
    position: relative;
}

.i2p-color-btn:hover {
    transform: scale(1.1);
}

.i2p-color-btn.active {
    border-color: var(--primary-color, #6366f1);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb, 99, 102, 241), 0.2);
}

.i2p-color-picker {
    background: linear-gradient(135deg, #ff6b6b 0%, #ffd93d 25%, #6bcb77 50%, #4d96ff 75%, #9b59b6 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.i2p-color-picker svg {
    width: 18px;
    height: 18px;
    color: white;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.i2p-color-picker input {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

/* Alignment Grid */
.i2p-alignment-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.35rem;
    max-width: 140px;
}

.i2p-align-btn {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.03);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--i2p-transition);
    color: var(--text-color, #1f2937);
    opacity: 0.4;
}

.i2p-align-btn svg {
    width: 20px;
    height: 20px;
}

.i2p-align-btn:hover {
    border-color: var(--primary-color, #6366f1);
    opacity: 0.7;
}

.i2p-align-btn.active {
    background: var(--primary-color, #6366f1);
    border-color: var(--primary-color, #6366f1);
    color: white;
    opacity: 1;
}

/* Grid Preview */
.i2p-grid-preview {
    margin-top: 0.75rem;
    display: grid;
    gap: 4px;
    padding: 0.5rem;
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.03);
    border-radius: var(--i2p-radius-sm);
    max-width: 120px;
}

.i2p-grid-preview.grid-1x1 {
    grid-template-columns: 1fr;
}

.i2p-grid-preview.grid-1x2 {
    grid-template-columns: 1fr;
}

.i2p-grid-preview.grid-2x2 {
    grid-template-columns: repeat(2, 1fr);
}

.i2p-grid-preview.grid-2x3 {
    grid-template-columns: repeat(2, 1fr);
}

.i2p-grid-preview.grid-3x3 {
    grid-template-columns: repeat(3, 1fr);
}

.i2p-grid-cell {
    aspect-ratio: 1;
    background: var(--primary-color, #6366f1);
    opacity: 0.3;
    border-radius: 3px;
}

/* Quality Slider */
.i2p-quality-slider {
    margin-bottom: 0.75rem;
}

.i2p-quality-slider input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(to right, var(--i2p-warning), var(--i2p-success));
    -webkit-appearance: none;
    cursor: pointer;
}

.i2p-quality-slider input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: white;
    border: 3px solid var(--primary-color, #6366f1);
    border-radius: 50%;
    box-shadow: var(--i2p-shadow-sm);
    cursor: pointer;
}

.i2p-quality-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.35rem;
    font-size: 0.7rem;
    color: var(--text-color, #1f2937);
    opacity: 0.7;
}

.i2p-quality-labels span:nth-child(2) {
    font-weight: 600;
    color: var(--primary-color, #6366f1);
    opacity: 1;
}

/* Quality Presets */
.i2p-quality-presets {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.i2p-preset-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem 0.5rem;
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.03);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: var(--i2p-radius-sm);
    cursor: pointer;
    transition: var(--i2p-transition);
}

.i2p-preset-btn:hover {
    border-color: var(--primary-color, #6366f1);
}

.i2p-preset-btn.active {
    border-color: var(--primary-color, #6366f1);
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.08);
}

.i2p-preset-icon {
    font-size: 1.25rem;
}

.i2p-preset-name {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-color, #1f2937);
}

.i2p-preset-desc {
    font-size: 0.65rem;
    color: var(--text-color, #1f2937);
    opacity: 0.6;
}

/* Hint Text */
.i2p-hint {
    font-size: 0.7rem;
    color: var(--text-color, #1f2937);
    opacity: 0.6;
    margin-top: 0.5rem;
}

/* Size Estimate */
.i2p-size-estimate {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: linear-gradient(135deg, rgba(var(--primary-rgb, 99, 102, 241), 0.08), rgba(var(--secondary-rgb, 139, 92, 246), 0.05));
    border-radius: var(--i2p-radius-md);
    border: 1px solid rgba(var(--primary-rgb, 99, 102, 241), 0.1);
}

.i2p-size-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color, #6366f1), var(--secondary-color, #8b5cf6));
    border-radius: var(--i2p-radius-sm);
}

.i2p-size-icon svg {
    width: 22px;
    height: 22px;
    color: white;
}

.i2p-size-info {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.i2p-size-label {
    font-size: 0.75rem;
    color: var(--text-color, #1f2937);
    opacity: 0.7;
}

.i2p-size-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color, #1f2937);
}

/* Naming Options */
.i2p-naming-options {
    display: flex;
    gap: 0.35rem;
    margin-top: 0.5rem;
}

.i2p-naming-btn {
    padding: 0.35rem 0.65rem;
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.05);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 4px;
    font-size: 0.7rem;
    color: var(--text-color, #1f2937);
    cursor: pointer;
    transition: var(--i2p-transition);
}

.i2p-naming-btn:hover {
    border-color: var(--primary-color, #6366f1);
    color: var(--primary-color, #6366f1);
}

/* Checkbox */
.i2p-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-color, #1f2937);
    margin-top: 0.5rem;
}

.i2p-checkbox input {
    display: none;
}

.i2p-checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color, #e5e7eb);
    border-radius: 4px;
    position: relative;
    transition: var(--i2p-transition);
}

.i2p-checkbox input:checked+.i2p-checkmark {
    background: var(--primary-color, #6366f1);
    border-color: var(--primary-color, #6366f1);
}

.i2p-checkbox input:checked+.i2p-checkmark::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Page Number Options */
.i2p-page-number-options {
    margin-top: 0.75rem;
    padding: 0.75rem;
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.03);
    border-radius: var(--i2p-radius-sm);
}

.i2p-page-number-options .i2p-btn-group {
    margin-bottom: 0.5rem;
}

/* Metadata Fields */
.i2p-setting-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.i2p-toggle-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 6px;
    color: var(--text-color, #1f2937);
    cursor: pointer;
    transition: var(--i2p-transition);
}

.i2p-toggle-btn svg {
    width: 16px;
    height: 16px;
    transition: transform 0.25s ease;
}

.i2p-toggle-btn.open svg {
    transform: rotate(180deg);
}

.i2p-metadata-fields {
    margin-top: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* ==========================================
   GENERATE SECTION
   ========================================== */
.i2p-generate-section {
    margin-top: auto;
}

.i2p-btn-generate {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color, #6366f1), var(--secondary-color, #8b5cf6));
    border: none;
    border-radius: var(--i2p-radius-md);
    font-size: 1rem;
    font-weight: 600;
    color: white;
    cursor: pointer;
    transition: var(--i2p-transition);
    box-shadow: 0 6px 20px rgba(var(--primary-rgb, 99, 102, 241), 0.35);
}

.i2p-btn-generate svg {
    width: 22px;
    height: 22px;
}

.i2p-btn-generate:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(var(--primary-rgb, 99, 102, 241), 0.45);
}

.i2p-btn-generate:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

/* Progress Bar */
.i2p-progress {
    margin-top: 0.75rem;
}

.i2p-progress-bar {
    height: 8px;
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.i2p-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(135deg, var(--primary-color, #6366f1), var(--secondary-color, #8b5cf6));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.i2p-progress-text {
    display: block;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-color, #1f2937);
    margin-top: 0.35rem;
    opacity: 0.7;
}

/* ==========================================
   TOAST NOTIFICATION
   ========================================== */
.i2p-toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1.25rem;
    background: var(--text-color, #1f2937);
    color: white;
    border-radius: var(--i2p-radius-md);
    box-shadow: var(--i2p-shadow-lg);
    z-index: 1000;
    opacity: 0;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.i2p-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.i2p-toast-message {
    font-size: 0.85rem;
}

.i2p-toast-undo {
    padding: 0.35rem 0.75rem;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 6px;
    color: white;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease;
}

.i2p-toast-undo:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ==========================================
   HELP MODAL
   ========================================== */
.i2p-modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.i2p-modal.show {
    opacity: 1;
    visibility: visible;
}

.i2p-modal-content {
    width: 90%;
    max-width: 500px;
    max-height: 85vh;
    background: var(--card-background, #ffffff);
    border-radius: var(--i2p-radius-lg);
    overflow: hidden;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.i2p-modal.show .i2p-modal-content {
    transform: scale(1);
}

.i2p-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, rgba(var(--primary-rgb, 99, 102, 241), 0.08), rgba(var(--secondary-rgb, 139, 92, 246), 0.05));
    border-bottom: 1px solid var(--border-color, #e5e7eb);
}

.i2p-modal-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color, #1f2937);
}

.i2p-modal-header h3 svg {
    width: 22px;
    height: 22px;
    color: var(--primary-color, #6366f1);
}

.i2p-modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-color, #1f2937);
    opacity: 0.6;
    cursor: pointer;
    transition: var(--i2p-transition);
}

.i2p-modal-close svg {
    width: 20px;
    height: 20px;
}

.i2p-modal-close:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.05);
}

.i2p-modal-body {
    padding: 1.25rem;
    overflow-y: auto;
    max-height: calc(85vh - 70px);
}

.i2p-help-step {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.i2p-step-num {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color, #6366f1), var(--secondary-color, #8b5cf6));
    color: white;
    font-size: 0.9rem;
    font-weight: 700;
    border-radius: 50%;
    flex-shrink: 0;
}

.i2p-step-content h4 {
    margin: 0 0 0.25rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-color, #1f2937);
}

.i2p-step-content p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-color, #1f2937);
    opacity: 0.7;
    line-height: 1.5;
}

.i2p-help-features {
    padding-top: 1rem;
    border-top: 1px solid var(--border-color, #e5e7eb);
}

.i2p-help-features h4 {
    margin: 0 0 0.75rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-color, #1f2937);
}

.i2p-help-features ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.i2p-help-features li {
    padding: 0.35rem 0;
    font-size: 0.85rem;
    color: var(--text-color, #1f2937);
    opacity: 0.8;
}

/* ==========================================
   DARK THEME OVERRIDES
   ========================================== */
.dark-theme .i2p-container,
[data-theme="dark"] .i2p-container {
    --i2p-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
    --i2p-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
    --i2p-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.45);
}

.dark-theme .i2p-input-group input,
.dark-theme .i2p-input-group select,
.dark-theme .i2p-input,
.dark-theme .i2p-select,
[data-theme="dark"] .i2p-input-group input,
[data-theme="dark"] .i2p-input-group select,
[data-theme="dark"] .i2p-input,
[data-theme="dark"] .i2p-select {
    background: #1a1d24;
}

.dark-theme .i2p-margin-box,
[data-theme="dark"] .i2p-margin-box {
    background: #2a2d34;
}

.dark-theme .i2p-quality-slider input[type="range"]::-webkit-slider-thumb,
[data-theme="dark"] .i2p-quality-slider input[type="range"]::-webkit-slider-thumb {
    background: #2a2d34;
}

.dark-theme .i2p-toast,
[data-theme="dark"] .i2p-toast {
    background: #f0f0f0;
    color: #1f2937;
}

.dark-theme .i2p-toast-undo,
[data-theme="dark"] .i2p-toast-undo {
    background: rgba(0, 0, 0, 0.1);
    color: #1f2937;
}

.dark-theme .i2p-toast-undo:hover,
[data-theme="dark"] .i2p-toast-undo:hover {
    background: rgba(0, 0, 0, 0.2);
}

.dark-theme .i2p-modal-close:hover,
[data-theme="dark"] .i2p-modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ==========================================
   RESPONSIVE - TABLET
   ========================================== */
@media (max-width: 1024px) {
    .i2p-main {
        grid-template-columns: 1fr 320px;
    }
}

/* ==========================================
   RESPONSIVE - MOBILE
   ========================================== */
@media (max-width: 768px) {
    .i2p-header {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }

    .i2p-header-content {
        width: 100%;
    }

    .i2p-header-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .i2p-main {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .i2p-upload-area {
        padding: 2rem 1.5rem;
    }

    .i2p-upload-icon {
        width: 60px;
        height: 60px;
    }

    .i2p-upload-icon svg {
        width: 28px;
        height: 28px;
    }

    .i2p-preview-section {
        max-height: 300px;
    }

    .i2p-tabs {
        flex-wrap: wrap;
    }

    .i2p-tab {
        flex: 1 1 45%;
    }

    .i2p-panel {
        max-height: none;
    }

    .i2p-btn-group {
        flex-wrap: wrap;
    }

    .i2p-option-btn {
        flex: 1 1 45%;
    }

    .i2p-quality-presets {
        grid-template-columns: 1fr;
    }

    .i2p-input-row {
        flex-wrap: wrap;
    }

    .i2p-input-separator {
        display: none;
    }

    .i2p-toast {
        left: 16px;
        right: 16px;
        transform: translateX(0) translateY(100px);
        width: auto;
    }

    .i2p-toast.show {
        transform: translateX(0) translateY(0);
    }

    .i2p-modal-content {
        width: 95%;
        max-height: 90vh;
    }
}

/* ==========================================
   RESPONSIVE - SMALL MOBILE
   ========================================== */
@media (max-width: 480px) {
    .i2p-header-icon {
        width: 44px;
        height: 44px;
    }

    .i2p-header-icon svg {
        width: 22px;
        height: 22px;
    }

    .i2p-header-text h2 {
        font-size: 1.1rem;
    }

    .i2p-header-text p {
        font-size: 0.75rem;
    }

    .i2p-privacy {
        font-size: 0.75rem;
    }

    .i2p-upload-content h3 {
        font-size: 1rem;
    }

    .i2p-tab {
        padding: 0.5rem 0.35rem;
        font-size: 0.65rem;
    }

    .i2p-tab svg {
        width: 16px;
        height: 16px;
    }

    .i2p-preview-actions {
        flex-direction: column;
        width: 100%;
    }

    .i2p-btn-sm {
        width: 100%;
        justify-content: center;
    }

    .i2p-option-btn {
        flex: 1 1 100%;
    }

    .i2p-naming-options {
        flex-direction: column;
    }

    .i2p-naming-btn {
        width: 100%;
    }
}

/* ==========================================
   ANIMATIONS
   ========================================== */
@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.i2p-btn-generate.loading {
    animation: pulse 1.5s ease-in-out infinite;
    pointer-events: none;
}

/* Custom Scale Slider */
.i2p-custom-scale {
    margin-top: 0.75rem;
    padding: 0.75rem;
    background: rgba(var(--primary-rgb, 99, 102, 241), 0.03);
    border-radius: var(--i2p-radius-sm);
}

.i2p-custom-scale label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-color, #1f2937);
    margin-bottom: 0.35rem;
}

.i2p-custom-scale input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color, #e5e7eb);
    -webkit-appearance: none;
    cursor: pointer;
}

.i2p-custom-scale input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--primary-color, #6366f1);
    border-radius: 50%;
    cursor: pointer;
}

/* Fullscreen Mode */
.i2p-container.fullscreen {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--background-color, #f9fafb);
    overflow-y: auto;
    padding: 1rem;
}

.dark-theme .i2p-container.fullscreen,
[data-theme="dark"] .i2p-container.fullscreen {
    background: var(--background-color, #0f1117);
}

/* Accessibility - Focus Visible */
.i2p-option-btn:focus-visible,
.i2p-tab:focus-visible,
.i2p-btn-icon:focus-visible,
.i2p-btn-sm:focus-visible,
.i2p-btn-generate:focus-visible,
.i2p-align-btn:focus-visible,
.i2p-color-btn:focus-visible {
    outline: 2px solid var(--primary-color, #6366f1);
    outline-offset: 2px;
}

/* Print styles - hide tool when printing */
@media print {
    .i2p-container {
        display: none;
    }
}