/**
 * Image Viewer OCR - 應用程式樣式
 * 基於 Nordic Design System 的圖片檢視器
 */

/* ========================================
   1. 全域樣式
   ======================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    height: 100%;
    overflow: hidden;
}

body {
    background: var(--nordic-bg-primary);
}

/* ========================================
   2. 應用程式佈局
   ======================================== */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: var(--nordic-bg-primary);
}

/* ----------------------------------------
   Header - 頂部工具列
   ---------------------------------------- */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    padding: 0 var(--nordic-spacing-lg);
    background: var(--nordic-bg-secondary);
    border-bottom: 1px solid var(--nordic-border-color);
    box-shadow: var(--nordic-shadow-sm);
    z-index: 10;
}

.header-left,
.header-right {
    flex: 0 0 auto;
}

.header-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.app-title {
    display: flex;
    align-items: center;
    gap: var(--nordic-spacing-sm);
    font-size: var(--nordic-font-size-lg);
    font-weight: var(--nordic-font-weight-semibold);
    color: var(--nordic-text-primary);
}

.app-icon {
    font-size: 24px;
}

/* Toolbar */
.toolbar {
    display: flex;
    align-items: center;
    gap: var(--nordic-spacing-xs);
    padding: var(--nordic-spacing-xs);
    background: var(--nordic-bg-tertiary);
    border-radius: var(--nordic-radius-lg);
}

.toolbar-btn {
    padding: 8px 14px;
}

.toolbar-btn .btn-icon {
    font-size: 16px;
}

.toolbar-btn .btn-text {
    font-size: var(--nordic-font-size-sm);
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--nordic-border-color);
    margin: 0 var(--nordic-spacing-xs);
}

/* ----------------------------------------
   Main Content - 主要內容區
   ---------------------------------------- */
.app-main {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* ----------------------------------------
   Sidebar - 側邊欄
   ---------------------------------------- */
.sidebar {
    width: 220px;
    display: flex;
    flex-direction: column;
    background: var(--nordic-bg-secondary);
    border: 1px solid var(--nordic-border-color);
}

.sidebar-left {
    border-right: 1px solid var(--nordic-border-color);
}

.sidebar-right {
    border-left: 1px solid var(--nordic-border-color);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--nordic-spacing-md);
    border-bottom: 1px solid var(--nordic-border-color);
}

.sidebar-header h3 {
    font-size: var(--nordic-font-size-base);
    font-weight: var(--nordic-font-weight-semibold);
    color: var(--nordic-text-primary);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--nordic-spacing-md);
}

/* ----------------------------------------
   Filter Grid - 濾鏡網格
   ---------------------------------------- */
.filter-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--nordic-spacing-sm);
}

.filter-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--nordic-spacing-xs);
    padding: var(--nordic-spacing-sm);
    background: var(--nordic-bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--nordic-radius-md);
    cursor: pointer;
    transition: all var(--nordic-transition-fast);
}

.filter-item:hover {
    background: var(--nordic-bg-hover);
    transform: translateY(-2px);
}

.filter-item.active {
    border-color: var(--nordic-accent-primary);
    background: var(--nordic-bg-secondary);
}

.filter-preview {
    width: 60px;
    height: 60px;
    border-radius: var(--nordic-radius-sm);
    background: linear-gradient(135deg, #a8b8c8 0%, #e8eaef 50%, #c8d0d8 100%);
    box-shadow: var(--nordic-shadow-sm);
}

/* 濾鏡預覽效果 */
.filter-preview.grayscale {
    filter: grayscale(100%);
}

.filter-preview.sepia {
    filter: sepia(80%);
}

.filter-preview.warm {
    filter: sepia(20%) saturate(140%) hue-rotate(-10deg);
}

.filter-preview.cool {
    filter: saturate(80%) hue-rotate(20deg);
}

.filter-preview.vintage {
    filter: sepia(40%) contrast(90%) brightness(95%);
}

.filter-preview.dramatic {
    filter: contrast(130%) saturate(120%);
}

.filter-preview.fade {
    filter: contrast(80%) brightness(110%) saturate(80%);
}

/* 新增濾鏡預覽 */
.filter-preview.vivid {
    filter: saturate(180%) contrast(110%);
}

.filter-preview.blur {
    filter: blur(2px);
}

.filter-preview.sharpen {
    filter: contrast(120%) brightness(105%);
}

.filter-preview.vignette {
    filter: brightness(95%) contrast(105%);
    box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.5);
}

.filter-preview.invert {
    filter: invert(100%);
}

.filter-preview.sketch {
    filter: grayscale(100%) contrast(150%) brightness(120%);
}

/* 第二批濾鏡預覽 */
.filter-preview.cyberpunk {
    filter: saturate(200%) hue-rotate(180deg) contrast(120%);
}

.filter-preview.sunset {
    filter: sepia(30%) saturate(150%) hue-rotate(-20deg) brightness(105%);
}

.filter-preview.ocean {
    filter: saturate(120%) hue-rotate(180deg) brightness(95%);
}

.filter-preview.forest {
    filter: saturate(110%) hue-rotate(60deg) brightness(95%);
}

.filter-preview.rose {
    filter: saturate(130%) hue-rotate(-30deg) brightness(105%);
}

.filter-preview.golden {
    filter: sepia(50%) saturate(150%) brightness(110%);
}

.filter-preview.chrome {
    filter: saturate(0%) contrast(140%) brightness(110%);
}

.filter-preview.noir {
    filter: grayscale(100%) contrast(150%) brightness(90%);
}

.filter-preview.dream {
    filter: saturate(80%) brightness(115%) contrast(85%) blur(0.5px);
}

.filter-preview.pop {
    filter: saturate(200%) contrast(150%) brightness(105%);
}

/* 藝術風格濾鏡分隔線 */
.filter-grid-divider {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: var(--nordic-spacing-sm);
    padding: var(--nordic-spacing-xs) 0;
    margin: var(--nordic-spacing-xs) 0;
}

.filter-grid-divider::before,
.filter-grid-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--nordic-border);
}

.filter-grid-divider span {
    font-size: var(--nordic-font-size-xs);
    color: var(--nordic-text-tertiary);
    white-space: nowrap;
    font-weight: 500;
    letter-spacing: 0.05em;
}

/* 藝術風格濾鏡預覽縮圖 */
.filter-preview.artistic-preview {
    background: linear-gradient(135deg, #d4d8dc 0%, #f0f1f3 40%, #bcc4cc 100%);
    position: relative;
    overflow: hidden;
}

.filter-preview.artistic-preview::after {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 3px,
        rgba(0, 0, 0, 0.06) 3px,
        rgba(0, 0, 0, 0.06) 4px
    );
}

.filter-item span {
    font-size: var(--nordic-font-size-xs);
    color: var(--nordic-text-secondary);
}

/* ----------------------------------------
   Adjustments - 調整面板
   ---------------------------------------- */
.adjustment-section {
    margin-bottom: var(--nordic-spacing-md);
}

.auto-adjust-btn {
    width: 100%;
}

.adjustment-group {
    margin-bottom: var(--nordic-spacing-md);
}

.adjustment-label {
    display: flex;
    align-items: center;
    gap: var(--nordic-spacing-xs);
    margin-bottom: var(--nordic-spacing-xs);
    font-size: var(--nordic-font-size-sm);
    color: var(--nordic-text-secondary);
}

.adjustment-icon {
    font-size: 14px;
}

.adjustment-value {
    margin-left: auto;
    font-weight: var(--nordic-font-weight-medium);
    color: var(--nordic-text-primary);
    min-width: 36px;
    text-align: right;
}

.adjustment-divider {
    height: 1px;
    background: var(--nordic-border-color);
    margin: var(--nordic-spacing-lg) 0;
}

/* ----------------------------------------
   Curves Editor - 曲線調整
   ---------------------------------------- */
.curves-section {
    margin-bottom: var(--nordic-spacing-md);
}

.curves-header {
    display: flex;
    align-items: center;
    gap: var(--nordic-spacing-xs);
    padding: var(--nordic-spacing-sm) 0;
    cursor: pointer;
    font-size: var(--nordic-font-size-sm);
    color: var(--nordic-text-secondary);
    user-select: none;
}

.curves-header:hover {
    color: var(--nordic-text-primary);
}

.curves-toggle-icon {
    margin-left: auto;
    font-size: 10px;
    transition: transform var(--nordic-transition-fast);
}

.curves-toggle-icon.expanded {
    transform: rotate(90deg);
}

.curves-panel {
    margin-top: var(--nordic-spacing-sm);
}

.curves-tabs {
    display: flex;
    gap: 2px;
    margin-bottom: var(--nordic-spacing-sm);
}

.curves-tab {
    flex: 1;
    padding: var(--nordic-spacing-xs) var(--nordic-spacing-sm);
    font-size: var(--nordic-font-size-xs);
    font-weight: var(--nordic-font-weight-medium);
    background: var(--nordic-bg-tertiary);
    border: 1px solid var(--nordic-border-color);
    border-radius: var(--nordic-radius-sm);
    cursor: pointer;
    color: var(--nordic-text-secondary);
    transition: all var(--nordic-transition-fast);
}

.curves-tab:hover {
    background: var(--nordic-bg-hover);
}

.curves-tab.active {
    background: var(--nordic-accent-primary);
    color: var(--nordic-text-inverse);
    border-color: var(--nordic-accent-primary);
}

.curves-tab-r.active {
    background: #c04040;
    border-color: #c04040;
}

.curves-tab-g.active {
    background: #40a040;
    border-color: #40a040;
}

.curves-tab-b.active {
    background: #4060c0;
    border-color: #4060c0;
}

.curves-canvas-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    border: 1px solid var(--nordic-border-color);
    border-radius: var(--nordic-radius-sm);
    overflow: hidden;
    background: var(--nordic-bg-tertiary);
}

.curves-canvas-wrap canvas {
    width: 100%;
    height: 100%;
    display: block;
    cursor: crosshair;
}

.curves-reset-btn {
    width: 100%;
    margin-top: var(--nordic-spacing-sm);
}

/* ----------------------------------------
   Canvas Area - 圖片顯示區
   ---------------------------------------- */
.canvas-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    background: var(--nordic-bg-primary);
    overflow: hidden;
}

/* Welcome Screen */
.welcome-screen {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--nordic-bg-primary);
    z-index: 5;
}

.welcome-content {
    text-align: center;
    padding: var(--nordic-spacing-2xl);
}

.welcome-icon {
    font-size: 80px;
    margin-bottom: var(--nordic-spacing-lg);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.welcome-content h2 {
    font-size: var(--nordic-font-size-2xl);
    font-weight: var(--nordic-font-weight-semibold);
    color: var(--nordic-text-primary);
    margin-bottom: var(--nordic-spacing-sm);
}

.welcome-content p {
    color: var(--nordic-text-muted);
    margin-bottom: var(--nordic-spacing-lg);
}

.welcome-hint {
    font-size: var(--nordic-font-size-sm);
    color: var(--nordic-text-muted);
    margin-top: var(--nordic-spacing-md);
}

/* Editor Container */
.editor-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    /* 這兩個屬性確保 flex 子元素不會撐開容器 */
    min-height: 0;
    height: 0;
}

/* Image Viewport - 可四向滾動 */
.image-viewport {
    /* 使用絕對定位填滿父容器，確保固定高度 */
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: auto;
    background: var(--nordic-bg-primary);
}

/* 內層容器 - 作為滾動內容的包裝器 */
.image-viewport-inner {
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    /* 尺寸由 JavaScript 控制 */
}

/* 確保捲動條可見 */
.image-viewport::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

.image-viewport::-webkit-scrollbar-track {
    background: var(--nordic-bg-tertiary);
    border-radius: 6px;
}

.image-viewport::-webkit-scrollbar-thumb {
    background: var(--nordic-border-color);
    border-radius: 6px;
    border: 2px solid var(--nordic-bg-tertiary);
}

.image-viewport::-webkit-scrollbar-thumb:hover {
    background: var(--nordic-text-muted);
}

#image-canvas {
    /* 加強邊框 - 讓圖片邊界更明顯 */
    border: 3px solid var(--nordic-accent-primary);
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.1),
        0 4px 12px rgba(0, 0, 0, 0.15),
        0 8px 24px rgba(0, 0, 0, 0.2);
    border-radius: var(--nordic-radius-sm);
    background: repeating-conic-gradient(#e0e0e0 0% 25%, #fff 0% 50%) 50% / 20px 20px;
    display: block;
    flex-shrink: 0;
}

/* Zoom Controls - 縮放控制（移到右上角） */
.zoom-controls {
    position: absolute;
    top: var(--nordic-spacing-md);
    right: var(--nordic-spacing-md);
    display: flex;
    align-items: center;
    gap: var(--nordic-spacing-sm);
    padding: var(--nordic-spacing-sm) var(--nordic-spacing-md);
    background: var(--nordic-bg-secondary);
    border-radius: var(--nordic-radius-full);
    box-shadow: var(--nordic-shadow-md);
    z-index: 20;
}

.zoom-level {
    min-width: 50px;
    text-align: center;
    font-size: var(--nordic-font-size-sm);
    font-weight: var(--nordic-font-weight-medium);
    color: var(--nordic-text-primary);
}

/* ----------------------------------------
   Canvas Navigation - 畫布導航按鈕
   ---------------------------------------- */
.canvas-nav {
    position: absolute;
    bottom: var(--nordic-spacing-lg);
    right: var(--nordic-spacing-lg);
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 20;
}

.nav-btn {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: var(--nordic-radius-md);
    background: var(--nordic-bg-secondary);
    color: var(--nordic-text-primary);
    font-size: 14px;
    cursor: pointer;
    box-shadow: var(--nordic-shadow-sm);
    transition: all var(--nordic-transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-btn:hover {
    background: var(--nordic-bg-hover);
    transform: scale(1.05);
}

.nav-btn:active {
    transform: scale(0.95);
}

.nav-btn.active {
    background: var(--nordic-accent-primary);
    color: white;
}

/* 導航按鈕排列 */
.canvas-nav {
    display: grid;
    grid-template-areas:
        ". up ."
        "left hand right"
        ". down .";
    grid-template-columns: 36px 36px 36px;
    grid-template-rows: 36px 36px 36px;
    gap: 4px;
}

.nav-btn-up {
    grid-area: up;
}

.nav-btn-down {
    grid-area: down;
}

.nav-btn-left {
    grid-area: left;
}

.nav-btn-right {
    grid-area: right;
}

.nav-btn-hand {
    grid-area: hand;
    font-size: 18px;
}

/* 拖曳模式游標 */
.image-viewport.drag-mode {
    cursor: grab;
}

.image-viewport.drag-mode:active,
.image-viewport.dragging {
    cursor: grabbing;
}

/* ----------------------------------------
   Resize Modal - DPI 設定樣式
   ---------------------------------------- */
.resize-divider {
    height: 1px;
    background: var(--nordic-border-color);
    margin: var(--nordic-spacing-md) 0;
}

.resize-dpi-section,
.resize-quality-section {
    margin-top: var(--nordic-spacing-sm);
}

.resize-dpi-hint {
    font-size: var(--nordic-font-size-xs);
    color: var(--nordic-text-muted);
    margin-top: var(--nordic-spacing-xs);
}

/* 快速縮放按鈕區 */
.resize-quick-scale {
    margin-bottom: var(--nordic-spacing-sm);
}

.resize-quick-scale label {
    display: block;
    font-size: var(--nordic-font-size-sm);
    font-weight: 500;
    color: var(--nordic-text-secondary);
    margin-bottom: var(--nordic-spacing-xs);
}

.resize-quick-buttons {
    display: flex;
    gap: var(--nordic-spacing-xs);
}

.resize-scale-btn {
    flex: 1;
    padding: var(--nordic-spacing-xs) var(--nordic-spacing-sm);
    font-size: var(--nordic-font-size-sm);
    font-weight: 600;
}

.resize-scale-btn:hover {
    background: var(--nordic-primary-color);
    color: white;
}

/* ----------------------------------------
   Crop Overlay - 裁切遮罩
   ---------------------------------------- */
.crop-overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    /* 不設背景，讓 crop-area 的 box-shadow 來處理變暗效果 */
    pointer-events: none;
}

.crop-area {
    position: absolute;
    border: 2px dashed white;
    background: transparent;
    cursor: move;
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.5);
    pointer-events: auto;
    /* 確保可以點擊和拖曳 */
}

.crop-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background: white;
    border: 2px solid var(--nordic-accent-primary);
    border-radius: 50%;
}

.crop-handle-nw {
    top: -6px;
    left: -6px;
    cursor: nw-resize;
}

.crop-handle-ne {
    top: -6px;
    right: -6px;
    cursor: ne-resize;
}

.crop-handle-sw {
    bottom: -6px;
    left: -6px;
    cursor: sw-resize;
}

.crop-handle-se {
    bottom: -6px;
    right: -6px;
    cursor: se-resize;
}

/* 四邊手柄 */
.crop-handle-n {
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    cursor: n-resize;
}

.crop-handle-s {
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    cursor: s-resize;
}

.crop-handle-e {
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    cursor: e-resize;
}

.crop-handle-w {
    left: -6px;
    top: 50%;
    transform: translateY(-50%);
    cursor: w-resize;
}

/* ----------------------------------------
   OCR Region Selection - OCR 區域選擇
   ---------------------------------------- */
.ocr-region-overlay {
    position: absolute;
    inset: 0;
    z-index: 12;
    cursor: crosshair;
}

.ocr-region-box {
    position: absolute;
    border: 2px solid var(--nordic-info);
    background: rgba(90, 138, 196, 0.15);
    pointer-events: none;
    display: none;
}

/* ----------------------------------------
   Mask Edit - 去背編輯
   ---------------------------------------- */
.mask-edit-overlay {
    position: absolute;
    inset: 0;
    z-index: 20;
    pointer-events: auto;
}

.mask-edit-overlay canvas {
    position: absolute;
    top: 0;
    left: 0;
}

.mask-edit-toolbar {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: stretch;
    /* 改為 stretch 讓所有元素等高 */
    gap: var(--nordic-spacing-md);
    padding: var(--nordic-spacing-sm) var(--nordic-spacing-md);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--nordic-border-light);
    border-radius: var(--nordic-radius-lg);
    box-shadow: var(--nordic-shadow-lg);
    z-index: 100;
    cursor: default;
    user-select: none;
    transition: opacity 0.15s ease;
}

.mask-edit-toolbar.dragging {
    opacity: 0.9;
    cursor: grabbing;
}

.mask-toolbar-drag-handle {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--nordic-spacing-xs) var(--nordic-spacing-sm);
    color: var(--nordic-text-muted);
    cursor: grab;
    font-size: 14px;
    letter-spacing: 2px;
    border-right: 1px solid var(--nordic-border-light);
}

.mask-toolbar-drag-handle:active {
    cursor: grabbing;
}

.mask-edit-tools-group {
    display: flex;
    align-items: stretch;
    /* 改為 stretch */
    gap: var(--nordic-spacing-md);
}

.mask-tools-section {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mask-tools-section .section-label {
    font-size: 10px;
    color: var(--nordic-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
}

.mask-tools-row {
    display: flex;
    gap: var(--nordic-spacing-xs);
}

.mask-tools-divider {
    width: 1px;
    align-self: stretch;
    background: var(--nordic-border-light);
}

.mask-tool-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 10px;
    border: 2px solid var(--nordic-border-light);
    border-radius: var(--nordic-radius-md);
    background: var(--nordic-bg-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 60px;
}

.mask-tool-btn:hover {
    border-color: var(--nordic-accent-primary);
    background: var(--nordic-bg-hover);
}

.mask-tool-btn.active {
    border-color: var(--nordic-accent-primary);
    background: rgba(90, 138, 196, 0.15);
}

.mask-tool-btn .tool-icon {
    font-size: 20px;
}

.mask-tool-btn .tool-label {
    font-size: 10px;
    color: var(--nordic-text-secondary);
    white-space: nowrap;
}

.mask-tool-btn.active .tool-label {
    color: var(--nordic-accent-primary);
    font-weight: 600;
}

/* 自動選主體 - 藍色提示 */
#mask-tool-auto-subject.active {
    border-color: var(--nordic-info);
    background: rgba(90, 138, 196, 0.2);
}

/* 選擇去背區 - 橙色提示 */
#mask-tool-auto-bg.active {
    border-color: #e67e22;
    background: rgba(230, 126, 34, 0.15);
}

/* 恢復筆刷 - 綠色提示 */
#mask-tool-restore.active {
    border-color: var(--nordic-success);
    background: rgba(94, 161, 118, 0.15);
}

#mask-tool-restore.active .tool-label {
    color: var(--nordic-success);
}

/* 移除筆刷 - 紅色提示 */
#mask-tool-erase.active {
    border-color: var(--nordic-danger);
    background: rgba(209, 105, 105, 0.15);
}

#mask-tool-erase.active .tool-label {
    color: var(--nordic-danger);
}

/* 筆刷/容差滑桿群組 - 上下排列，垂直置中 */
.mask-sliders-group {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 14px;
    align-self: stretch;
}

/* 緊湊型滑桿 - 水平排列 */
.mask-edit-slider-compact {
    display: flex;
    align-items: center;
    gap: 4px;
}

.mask-edit-slider-compact label {
    font-size: 10px;
    color: var(--nordic-text-muted);
    width: 28px;
    text-align: right;
}

.mask-edit-slider-compact input[type="range"] {
    width: 60px;
    height: 4px;
}

.mask-edit-slider-compact span {
    font-size: 10px;
    color: var(--nordic-text-secondary);
    width: 20px;
}

/* 舊版樣式保留 */
.mask-edit-slider {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.mask-edit-slider label {
    font-size: 10px;
    color: var(--nordic-text-muted);
    text-transform: uppercase;
}

.mask-edit-slider input[type="range"] {
    width: 80px;
}

.mask-edit-slider span {
    font-size: 11px;
    color: var(--nordic-text-secondary);
}

/* 歷史按鈕 - 垂直排列，垂直置中 */
.mask-edit-history-vertical {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    /* 增加間距避免按錯 */
    border-left: 1px solid var(--nordic-border-light);
    padding-left: var(--nordic-spacing-sm);
    align-self: stretch;
}

.mask-edit-history-vertical button {
    padding: 6px 10px;
    /* 加大按鈕 */
    min-width: auto;
    font-size: 14px;
    /* 加大字體 */
}

.mask-edit-history-vertical button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* 舊版歷史按鈕 */
.mask-edit-history {
    display: flex;
    gap: var(--nordic-spacing-xs);
    align-items: center;
}

.mask-edit-history button {
    padding: 6px 8px;
    min-width: auto;
}

.mask-edit-history button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.mask-edit-actions {
    display: flex;
    gap: var(--nordic-spacing-xs);
    border-left: 1px solid var(--nordic-border-light);
    padding-left: var(--nordic-spacing-sm);
}

/* 超小按鈕樣式 */
.nordic-btn-xs {
    padding: 2px 6px;
    font-size: 11px;
}

/* 去背編輯模式的游標樣式 */
.mask-edit-overlay.restore-mode {
    cursor: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><circle cx="12" cy="12" r="10" fill="none" stroke="%235EA176" stroke-width="2"/><circle cx="12" cy="12" r="3" fill="%235EA176"/></svg>') 12 12, crosshair;
}

.mask-edit-overlay.erase-mode {
    cursor: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><circle cx="12" cy="12" r="10" fill="none" stroke="%23D16969" stroke-width="2"/><circle cx="12" cy="12" r="3" fill="%23D16969"/></svg>') 12 12, crosshair;
}

/* ----------------------------------------
   OCR Overlay - 文字辨識層
   ---------------------------------------- */
.ocr-overlay {
    position: absolute;
    inset: 0;
    z-index: 15;
    pointer-events: none;
}

.ocr-text-layer {
    position: absolute;
    inset: 0;
    pointer-events: auto;
}

.ocr-word {
    position: absolute;
    background: transparent;
    cursor: text;
    transition: background 0.15s ease;
}

.ocr-word:hover {
    background: rgba(90, 138, 196, 0.2);
}

.ocr-word.selected {
    background: rgba(90, 138, 196, 0.4);
}

.ocr-selection {
    position: absolute;
    background: rgba(90, 138, 196, 0.3);
    border: 1px solid var(--nordic-info);
    pointer-events: none;
    display: none;
}

/* OCR 選取手柄 */
.ocr-handle {
    position: absolute;
    width: 14px;
    height: 22px;
    background: var(--nordic-info);
    border-radius: 7px;
    cursor: col-resize;
    pointer-events: auto;
    z-index: 20;
}

.ocr-handle::after {
    content: '';
    position: absolute;
    width: 2px;
    height: 14px;
    background: white;
    border-radius: 1px;
    top: 4px;
    left: 6px;
}

.ocr-handle-start {
    transform: translateX(-50%);
}

.ocr-handle-end {
    transform: translateX(50%);
}

/* ----------------------------------------
   OCR Result Panel - 辨識結果面板
   ---------------------------------------- */
.ocr-result-panel {
    position: absolute;
    bottom: var(--nordic-spacing-lg);
    right: var(--nordic-spacing-lg);
    width: 360px;
    max-height: 300px;
    background: var(--nordic-bg-secondary);
    border-radius: var(--nordic-radius-lg);
    box-shadow: var(--nordic-shadow-xl);
    border: 1px solid var(--nordic-border-color);
    display: flex;
    flex-direction: column;
    z-index: 20;
}

.ocr-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--nordic-spacing-md);
    border-bottom: 1px solid var(--nordic-border-color);
}

.ocr-result-header h3 {
    font-size: var(--nordic-font-size-base);
    font-weight: var(--nordic-font-weight-semibold);
}

.ocr-language-info {
    display: flex;
    align-items: center;
    gap: var(--nordic-spacing-sm);
    padding: var(--nordic-spacing-sm) var(--nordic-spacing-md);
    border-bottom: 1px solid var(--nordic-border-color);
    font-size: var(--nordic-font-size-sm);
    color: var(--nordic-text-secondary);
}

.ocr-language-selector label {
    color: var(--nordic-text-secondary);
}

.ocr-language-selector select {
    flex: 1;
    padding: var(--nordic-spacing-xs) var(--nordic-spacing-sm);
    background: var(--nordic-bg-tertiary);
    border: 1px solid var(--nordic-border-color);
    border-radius: var(--nordic-radius-sm);
    color: var(--nordic-text-primary);
    font-size: var(--nordic-font-size-sm);
}

.ocr-hint {
    margin: 0;
    padding: var(--nordic-spacing-sm) var(--nordic-spacing-md);
    font-size: var(--nordic-font-size-sm);
    color: var(--nordic-primary);
    background: rgba(59, 130, 246, 0.1);
    border-bottom: 1px solid var(--nordic-border-color);
}

.ocr-result-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--nordic-spacing-md);
}

.ocr-text-output {
    width: 100%;
    min-height: 120px;
    padding: var(--nordic-spacing-sm);
    background: var(--nordic-bg-tertiary);
    border: 1px solid var(--nordic-border-color);
    border-radius: var(--nordic-radius-sm);
    font-family: var(--nordic-font-family);
    font-size: var(--nordic-font-size-sm);
    color: var(--nordic-text-primary);
    resize: vertical;
}

.ocr-text-output:focus {
    outline: none;
    border-color: var(--nordic-accent-primary);
}

.ocr-result-footer {
    display: flex;
    gap: var(--nordic-spacing-sm);
    padding: var(--nordic-spacing-md);
    border-top: 1px solid var(--nordic-border-color);
}

.ocr-result-footer button {
    flex: 1;
}

/* ----------------------------------------
   Footer - 底部狀態列
   ---------------------------------------- */
.app-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 32px;
    padding: 0 var(--nordic-spacing-md);
    background: var(--nordic-bg-secondary);
    border-top: 1px solid var(--nordic-border-color);
    font-size: var(--nordic-font-size-xs);
    color: var(--nordic-text-muted);
}

.footer-center {
    font-weight: var(--nordic-font-weight-medium);
}

/* ========================================
   3. Modal - 對話框
   ======================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--nordic-z-modal);
    backdrop-filter: blur(4px);
}

.modal {
    min-width: 400px;
    max-width: 90vw;
    animation: modalIn 0.25s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }

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

.modal-close {
    background: none;
    border: none;
    font-size: 18px;
    color: var(--nordic-text-muted);
    cursor: pointer;
    transition: color var(--nordic-transition-fast);
}

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

/* Resize Modal */
.resize-form {
    display: flex;
    align-items: flex-end;
    gap: var(--nordic-spacing-md);
    margin-bottom: var(--nordic-spacing-md);
}

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

.resize-input-group label {
    display: block;
    font-size: var(--nordic-font-size-sm);
    color: var(--nordic-text-secondary);
    margin-bottom: var(--nordic-spacing-xs);
}

.resize-link {
    font-size: 20px;
    color: var(--nordic-accent-primary);
    padding-bottom: 10px;
    cursor: pointer;
    user-select: none;
}

.resize-link.unlinked {
    opacity: 0.4;
}

/* ========================================
   4. Loading Overlay - 載入遮罩
   ======================================== */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(248, 249, 251, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--nordic-z-overlay);
    backdrop-filter: blur(4px);
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--nordic-spacing-md);
}

.loading-text {
    font-size: var(--nordic-font-size-base);
    color: var(--nordic-text-secondary);
}

/* ========================================
   5. Drag & Drop States - 拖放狀態
   ======================================== */
.canvas-area.drag-over {
    background: var(--nordic-info-light);
}

.canvas-area.drag-over .welcome-content {
    transform: scale(1.02);
}

.canvas-area.drag-over::after {
    content: '放開以載入圖片';
    position: absolute;
    inset: var(--nordic-spacing-lg);
    border: 3px dashed var(--nordic-info);
    border-radius: var(--nordic-radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--nordic-font-size-xl);
    color: var(--nordic-info);
    background: rgba(90, 138, 196, 0.05);
    pointer-events: none;
    z-index: 100;
}

/* ========================================
   6. Responsive - 響應式設計
   ======================================== */
@media (max-width: 1200px) {
    .sidebar {
        width: 180px;
    }

    .filter-grid {
        grid-template-columns: 1fr;
    }

    .filter-preview {
        width: 50px;
        height: 50px;
    }
}

@media (max-width: 900px) {

    .sidebar-left,
    .sidebar-right {
        display: none;
    }

    .toolbar-btn .btn-text {
        display: none;
    }

    .app-title .app-icon+span {
        display: none;
    }
}

/* ========================================
   7. Custom Scrollbar
   ======================================== */
.nordic-scrollbar::-webkit-scrollbar {
    width: 6px;
}

.nordic-scrollbar::-webkit-scrollbar-track {
    background: transparent;
}

.nordic-scrollbar::-webkit-scrollbar-thumb {
    background: var(--nordic-border-color);
    border-radius: var(--nordic-radius-full);
}

.nordic-scrollbar::-webkit-scrollbar-thumb:hover {
    background: var(--nordic-text-muted);
}

/* OCR 語言選擇彈窗 */
.ocr-lang-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(4px);
}

.ocr-lang-modal-content {
    background: var(--nordic-bg-primary);
    border-radius: var(--nordic-radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 400px;
    overflow: hidden;
}

.ocr-lang-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--nordic-spacing-md);
    border-bottom: 1px solid var(--nordic-border-color);
}

.ocr-lang-modal-header h3 {
    margin: 0;
    font-size: var(--nordic-font-size-lg);
}

.ocr-lang-modal-body {
    padding: var(--nordic-spacing-md);
}

.ocr-lang-hint {
    margin: 0 0 var(--nordic-spacing-md);
    color: var(--nordic-text-secondary);
    font-size: var(--nordic-font-size-sm);
}

.ocr-lang-options {
    display: flex;
    flex-direction: column;
    gap: var(--nordic-spacing-sm);
}

.ocr-lang-option {
    display: flex;
    align-items: center;
    gap: var(--nordic-spacing-sm);
    padding: var(--nordic-spacing-sm) var(--nordic-spacing-md);
    background: var(--nordic-bg-secondary);
    border-radius: var(--nordic-radius-md);
    cursor: pointer;
    transition: background 0.2s;
}

.ocr-lang-option:hover {
    background: var(--nordic-bg-tertiary);
}

.ocr-lang-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--nordic-primary);
}

.ocr-lang-option span {
    font-size: var(--nordic-font-size-base);
}

.ocr-lang-note {
    margin: var(--nordic-spacing-md) 0 0;
    padding: var(--nordic-spacing-sm);
    background: rgba(251, 191, 36, 0.1);
    border-radius: var(--nordic-radius-sm);
    color: var(--nordic-warning);
    font-size: var(--nordic-font-size-xs);
}

.ocr-lang-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--nordic-spacing-sm);
    padding: var(--nordic-spacing-md);
    border-top: 1px solid var(--nordic-border-color);
}