/* Color Palette */
:root {
    --primary-color: #09122C; /* Blue */
    --primary-hover: #3e4147;
    --secondary-color: #6c757d; /* Gray */
    --secondary-hover: #5a6268;
    --success-color: #28a745; /* Green */
    --warning-color: #ffc107; /* Yellow */
    --danger-color: #dc3545;  /* Red */
    --light-bg: #f8f9fa;
    --medium-bg: #e9ecef;
    --dark-bg: #343a40;
    --border-color: #dee2e6;
    --text-color: #212529;
    --text-muted: #6c757d;
    --header-height: 60px;
    --sidebar-width: 300px;
    --properties-panel-width: 320px;
    --panel-collapsed-width: 40px; /* Width when properties panel is collapsed */
    --border-radius: 6px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition-speed: 0.3s;
    
    /* Gradient Colors */
    --gradient-start: #2F425A;
    --gradient-end: #00764A;
    
    /* Transparency Grid */
    --grid-size: 10px;
    --grid-color-1: #CCCCCC;
    --grid-color-2: #FFFFFF;
}

/* Dark Mode Variables */
.dark-mode {
    --primary-color: #f5af0b;
    --primary-hover: #c87319;
    --light-bg: #121212;
    --medium-bg: #1e1e1e;
    --dark-bg: #0a0a0a;
    --border-color: #333333;
    --text-color: #f5f5f5;
    --text-muted: #aaaaaa;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    
    /* Dark Mode Transparency Grid */
    --grid-color-1: #333333;
    --grid-color-2: #444444;
}

/* تحسينات وضع الظلام لجميع المكونات */
.dark-mode {
    --primary-color: #f5af0b;
    --primary-hover: #c87319;
    --light-bg: #121212;
    --medium-bg: #1e1e1e;
    --dark-bg: #0a0a0a;
    --border-color: #333333;
    --text-color: #f5f5f5;
    --text-muted: #aaaaaa;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    
    /* Dark Mode Transparency Grid */
    --grid-color-1: #333333;
    --grid-color-2: #444444;
}

/* تحسينات وضع الظلام */
.dark-mode .header {
    background-color: #1b1d22;
    border-color: #333333;
}

.dark-mode .logo {
    color: var(--primary-color);
}

.dark-mode .sidebar, 
.dark-mode .effects-sidebar, 
.dark-mode .effects-grid-sidebar {
    background-color: var(--light-bg);
    border-color: var(--border-color);
}

.dark-mode .category {
    background-color: var(--medium-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

.dark-mode .category:hover {
    background-color: #2a2a2a;
}

.dark-mode .category.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.dark-mode .effect-item {
    background-color: var(--medium-bg);
    border-color: var(--border-color);
}

.dark-mode .effect-item:hover {
    background-color: #2a2a2a;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(58, 134, 255, 0.3);
}

.dark-mode .effect-item span {
    color: var(--text-color);
}

.dark-mode .canvas-area {
    background-color: var(--medium-bg);
}

.dark-mode .canvas-header {
    background-color: var(--light-bg);
    border-color: var(--border-color);
}

.dark-mode .canvas-title h2 {
    color: var(--text-color);
}

.dark-mode .drop-zone {
    background-color: var(--medium-bg);
    border-color: var(--border-color);
}

.dark-mode .drop-zone-content {
    color: var(--text-muted);
}

.dark-mode .properties-panel {
    background-color: var(--light-bg);
    border-color: var(--border-color);
}

.dark-mode .panel-header {
    border-color: var(--border-color);
}

.dark-mode .panel-header h3 {
    color: var(--text-color);
}

.dark-mode .no-effect-selected {
    color: var(--text-muted);
}

.dark-mode .property-item label {
    color: var(--text-color);
}

.dark-mode input[type="range"] {
    background-color: var(--medium-bg);
}

.dark-mode select {
    background-color: var(--medium-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

.dark-mode .toast {
    background-color: var(--light-bg);
    color: var(--text-color);
}

/* تأثيرات للأزرار عند التحويم */
.btn-primary, .btn-secondary, .btn-icon {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

/* تأثير الإضاءة عند التحويم */
.btn-primary::before, 
.btn-secondary::before, 
.effects-sidebar .category::before,
.btn-icon::before,
.effect-item::before,
.effects-grid .effect-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to right,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: skewX(-25deg);
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
    opacity: 0;
    pointer-events: none;
    z-index: 1;
}

.btn-primary:hover::before, 
.btn-secondary:hover::before,
.effects-sidebar .category:hover::before,
.btn-icon:hover::before,
.effect-item:hover::before,
.effects-grid .effect-item:hover::before {
    left: 100%;
    opacity: 1;
}

/* تحسين مؤثر الإضاءة للعناصر في شبكة المؤثرات وفئات المؤثرات */
.effects-grid .effect-item,
.effects-sidebar .category {
    position: relative;
    overflow: hidden;
}

/* تأثير التوهج للأزرار الرئيسية */
.btn-primary:hover {
    box-shadow: 0 0 15px var(--primary-color);
    transform: translateY(-2px);
}

/* تأثير للأزرار الثانوية */
.btn-secondary:hover {
    background-color: var(--medium-bg);
    transform: translateY(-1px);
}

/* تأثير للأزرار الأيقونية */
.btn-icon:hover {
    transform: scale(1.1);
}

/* تأثير عناصر المؤثرات */
.effect-item {
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.effect-item:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.dark-mode .effect-item:hover {
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3);
}

/* تأثير للفئات */
.category {
    transition: all 0.3s ease;
}

.category:hover {
    transform: translateY(-2px);
}

/* تأثير للقوائم */
.list-item, .preset-item {
    transition: all 0.2s ease;
}

.list-item:hover, .preset-item:hover {
    transform: translateX(-4px);
}

/* تحسين تأثير الأزرار في وضع الظلام */
.dark-mode .btn-primary:hover {
    box-shadow: 0 0 20px rgba(58, 134, 255, 0.5);
}

.dark-mode .btn-secondary {
    background-color: #2a2a2a;
    color: var(--text-color);
}

.dark-mode .btn-secondary:hover {
    background-color: #3a3a3a;
}

.dark-mode .btn-icon {
    color: var(--text-muted);
}

.dark-mode .btn-icon:hover {
    color: var(--primary-color);
}

/* تحسين شكل الإدخال في وضع الظلام */
.dark-mode input[type="text"],
.dark-mode input[type="search"],
.dark-mode input[type="number"] {
    background-color: var(--medium-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

.dark-mode input[type="text"]:focus,
.dark-mode input[type="search"]:focus,
.dark-mode input[type="number"]:focus,
.dark-mode select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(58, 134, 255, 0.25);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background: var(--medium-bg); /* Changed main background */
    color: var(--text-color);
    overflow: hidden;
    height: 100vh;
    direction: rtl; /* Ensure this is set */
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.header {
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 600;
}

.logo i {
    margin-left: 0.5rem;
    font-size: 1.25rem;
}

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

.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Effects Sidebar */
.effects-sidebar {
    width: 100px;
    background-color: var(--light-bg);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 5; /* Ensure sidebar is above other elements */
}

.effects-sidebar .sidebar-header {
    padding: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.effects-sidebar .search-box {
    position: relative;
    margin: 0;
}

.effects-sidebar .search-box input {
    width: 100%;
    padding: 0.5rem 1.5rem 0.5rem 0.25rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: white;
    font-size: 0.75rem;
}

.effects-sidebar .search-box i {
    position: absolute;
    right: 0.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.75rem;
}

.effects-sidebar .effects-categories {
    display: flex;
    flex-direction: column;
    padding: 0.5rem;
    gap: 0.5rem;
    overflow-y: auto;
    flex: 1; /* Take remaining space */
}

.effects-sidebar .category {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 0.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: white;
    border: 1px solid var(--border-color);
    position: relative;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    margin-bottom: 0.5rem;
}

.effects-sidebar .category:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.effects-sidebar .category.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.effects-sidebar .category.active i,
.effects-sidebar .category.active .category-name {
    color: white;
}

.effects-sidebar .category i {
    font-size: 1.5rem;
    margin: 0 0 0.25rem 0;
    width: auto;
    text-align: center;
    color: var(--primary-color);
}

.effects-sidebar .category .category-name {
    font-size: 0.65rem;
    text-align: center;
    margin-top: 0.25rem;
    color: var(--text-color);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.effects-sidebar .category .count {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Effects Grid Sidebar */
.effects-grid-sidebar {
    width: 220px;
    background-color: var(--light-bg);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.effects-grid-sidebar .sidebar-header {
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.effects-grid-sidebar .sidebar-header h3 {
    font-size: 0.9rem;
    margin: 0;
    font-weight: 600;
}

.effects-grid-sidebar .effects-grid-container {
    padding: 0.75rem;
    overflow-y: auto;
    flex: 1;
}

.effects-grid-sidebar .effects-grid {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 0.5rem;
    max-height: none;
}

/* Main Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--light-bg);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.search-box {
    position: relative;
    margin-top: 0.5rem;
}

.search-box input {
    width: 100%;
    padding: 0.5rem 2rem 0.5rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: white;
}

.search-box i {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.sidebar .category {
    display: flex;
    align-items: center;
    padding: 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
    flex: 1 0 calc(50% - 0.5rem);
    background-color: white;
    border: 1px solid var(--border-color);
}

.sidebar .category:hover {
    background-color: var(--hover-color);
}

.sidebar .category.active {
    background-color: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.sidebar .category i {
    margin-left: 0.5rem;
    font-size: 0.875rem;
    width: 16px;
    text-align: center;
}

.sidebar .category span {
    font-size: 0.875rem;
}

.sidebar .category .count {
    margin-right: auto;
    background-color: var(--light-bg);
    border-radius: 10px;
    padding: 0.125rem 0.375rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Header */
.header {
    height: var(--header-height);
    background: white;
    border-bottom: 1px solid var(--border-color);
    padding: 0 1.5rem; /* Increased padding */
    display: flex;
    align-items: center;
    box-shadow: var(--box-shadow);
    z-index: 10;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
}
.logo i {
    font-size: 1.8rem;
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

/* Main Content Layout */
.main-content {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* Sidebar (Effects Panel - Visually Right in RTL) */
.sidebar {
    width: var(--sidebar-width);
    background: var(--light-bg);
    border-left: 1px solid var(--border-color); /* Border towards canvas */
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width var(--transition-speed) ease;
}

.sidebar-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.search-box {
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 0.6rem 2.5rem 0.6rem 1rem; /* Adjusted for RTL icon */
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    background-color: white;
}
.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

.search-box i {
    position: absolute;
    right: 0.75rem; /* This is correct for RTL for icon on the right */
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

/* Categories */
.effects-categories {
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.category {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 0.75rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-speed), color var(--transition-speed);
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

.category:hover {
    background: var(--medium-bg);
}

.category.active {
    background: var(--primary-color);
    color: white;
}
.category.active i, .category.active .count {
    color: white;
}
.category.active .count {
    background-color: rgba(255,255,255,0.2);
}

.category i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    color: var(--secondary-color);
}

.category .count {
    margin-right: auto; /* Pushes to the left in RTL */
    background: var(--border-color);
    padding: 0.15rem 0.5rem;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
}

/* Effects Grid Container for Scrolling */
.effects-grid-container {
    flex-grow: 1; /* Allows grid to take available space */
    overflow-y: auto;
    padding: 1rem 1.25rem;
}

.effects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 0.75rem;
    padding: 0.5rem;
    overflow-y: auto;
    max-height: calc(100vh - 200px);
    flex: 1;
}

.effects-grid-sidebar .effects-grid {
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
}

.effect-item {
    aspect-ratio: 1 / 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.5rem;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.effect-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
}
.effect-item.active { /* Style for selected effect in grid */
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-color);
    background-color: var(--primary-light);
}

.effect-item i {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.effect-item.active i {
    color: var(--primary-color);
}

.effect-item span {
    font-size: 0.75rem;
    color: var(--text-color);
    line-height: 1.2;
}

/* Sidebar Sections (Presets, Favorites) */
.sidebar-section {
    padding: 0.5rem 1.25rem 1rem; /* Reduced top padding */
    border-top: 1px solid var(--border-color);
}
.sidebar-section:first-of-type { 
    /* border-top: none; if grid container is considered a section */
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}
.section-header h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-color);
}

.list-container.scrollable-list {
    max-height: 150px; /* Adjust as needed */
    overflow-y: auto;
}
.presets-list, .favorites-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.list-item, .preset-item {
    padding: 0.5rem 0.75rem;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color var(--transition-speed);
}
.list-item:hover, .preset-item:hover {
    background-color: var(--medium-bg);
}
.delete-preset-btn {
    background: none;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0.2rem;
    opacity: 0.7;
}
.delete-preset-btn:hover {
    opacity: 1;
}


/* Canvas Area */
.canvas-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    background-color: var(--medium-bg);
}

.canvas-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background-color: white;
    border-bottom: 1px solid var(--border-color);
    min-height: var(--header-height); /* Match header height */
}

.canvas-title h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}

.image-tabs {
    display: flex;
    gap: 0.25rem; /* Small gap between tabs */
    margin-right: 1rem; /* Space from title */
    overflow-x: auto; /* Allow scrolling if many tabs */
    max-width: 400px; /* Limit width */
}
.image-tab {
    padding: 0.4rem 0.8rem;
    background-color: var(--light-bg);
    border: 1px solid var(--border-color);
    border-bottom: none; /* Remove bottom border for tab look */
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    font-size: 0.8rem;
    cursor: pointer;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
}
.image-tab.active {
    background-color: white; /* Match canvas workspace background */
    color: var(--primary-color);
    font-weight: 500;
    border-color: var(--border-color); /* Ensure active tab border is visible */
    position: relative;
    /* top: 1px; Corrects border overlap */
}
.image-tab:not(.active):hover {
    background-color: var(--medium-bg);
}
.close-tab {
    background: none;
    border: none;
    font-size: 1.1rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0 0.2rem;
    line-height: 1;
}
.close-tab:hover {
    color: var(--danger-color);
}

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

.canvas-container { /* Holds drop-zone OR canvas-workspace */
    flex: 1;
    position: relative;
    overflow: auto; /* Allow scrolling for large zoomed images */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem; /* Padding around the workspace/dropzone */
}

/* Drop Zone */
.drop-zone {
    width: 100%;
    height: 100%;
    display: flex; /* Will be toggled by JS */
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--secondary-color);
    border-radius: var(--border-radius);
    background: var(--light-bg);
    transition: all var(--transition-speed) ease;
}
.drop-zone.drag-over {
    border-color: var(--primary-color);
    background: rgba(0, 123, 255, 0.05);
}
.drop-zone-content {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}
.drop-zone-content i.fa-cloud-upload-alt {
    font-size: 3.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}
.drop-zone-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}
.drop-zone-content p {
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}
.upload-methods {
    margin-bottom: 1rem;
}
.supported-formats p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Canvas Workspace */
.canvas-workspace {
    position: relative;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    background-color: var(--medium-bg);
}
#mainCanvas {
    box-shadow: var(--box-shadow);
    position: relative;
    z-index: 1;
}
.canvas-controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 800px; /* Max width for controls */
    padding: 0.5rem 1rem;
    background-color: rgba(255, 255, 255, 0.85);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-top: 1rem; /* Space from canvas */
    position: absolute; /* تغيير من sticky إلى absolute */
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
}
.image-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-left: 1rem; /* RTL: margin-right */
}
.zoom-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
#zoomLevel {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
    min-width: 45px;
    text-align: center;
}

/* Properties Panel (Visually Left in RTL) */
.properties-panel {
    width: var(--properties-panel-width);
    background: var(--light-bg);
    border-right: 1px solid var(--border-color); /* Border towards canvas */
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-speed) ease, width var(--transition-speed) ease;
    z-index: 5; /* Above canvas controls if they overlap */
}
.properties-panel.collapsed {
    /* In RTL, positive X is to the left. We want to move it (width - collapsed_width) to the left. */
    transform: translateX(calc(var(--properties-panel-width) - var(--panel-collapsed-width)));
}
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem; /* Match sidebar header */
    border-bottom: 1px solid var(--border-color);
    min-height: var(--header-height); /* Match header height for alignment */
}
.panel-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}
.panel-header .btn-icon i.fa-chevron-right { /* Initial state (expanded, button on right in panel, arrow points left in RTL) */
    /* transform: scaleX(-1); If arrow direction needs flipping based on panel side */
}
.panel-header .btn-icon i.fa-chevron-left { /* Collapsed state (arrow points right in RTL) */
    /* transform: scaleX(1); */
}

.panel-content.scrollable-list { /* Content area of properties panel */
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
}
.no-effect-selected {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    text-align: center;
    padding: 2rem;
}
.no-effect-selected i {
    font-size: 3rem;
    margin-bottom: 1rem;
}
.effect-properties .effect-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary-color);
}
.effect-preview {
    width: 100%;
    height: 150px;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    background-color: var(--medium-bg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}
.effect-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}
.properties-list .property-item {
    margin-bottom: 1.25rem;
}
.property-item label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color);
}
.property-item input[type="range"] {
    width: 100%;
    accent-color: var(--primary-color); /* Modern way to style range slider thumb */
}
.range-slider-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.range-slider-group .range-value {
    font-size: 0.85rem;
    color: var(--text-muted);
    min-width: 30px; /* Space for value */
}
.property-item input[type="color"] {
    width: 100%;
    height: 38px; /* Match other inputs */
    padding: 0.25rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
}
.property-item select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    background-color: white;
}
.property-item select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

.properties-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}
.properties-actions .btn-primary {
    flex-grow: 1;
}
#favoriteEffectBtn i.fas.fa-star { /* Filled star for favorited */
    color: var(--warning-color);
}


/* Buttons */
.btn-primary, .btn-secondary, .btn-icon {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-speed), border-color var(--transition-speed), color var(--transition-speed), box-shadow var(--transition-speed);
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
}
.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}
.btn-primary:disabled {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    cursor: not-allowed;
    opacity: 0.65;
}
.btn-secondary {
    background-color: var(--medium-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}
.btn-secondary:hover {
    background-color: var(--border-color); /* Darken slightly */
}
.btn-icon {
    background: transparent;
    color: var(--text-muted);
    padding: 0.6rem; /* Square padding for icons */
    border: none; /* No border for icon buttons by default */
    line-height: 1; /* Ensure icon is centered */
}
.btn-icon:hover {
    background-color: var(--medium-bg);
    color: var(--primary-color);
}
.btn-icon i {
    font-size: 1.1rem; /* Control icon size within button */
    margin: 0; /* Remove gap if only icon */
}
.btn-icon:disabled {
    color: var(--border-color);
    cursor: not-allowed;
    background-color: transparent;
}

/* Shortcuts Panel */
.shortcuts-panel {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    background: white;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    width: 90%;
    max-width: 500px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) ease, transform var(--transition-speed) ease, visibility 0s var(--transition-speed);
    z-index: 1001; /* Above modal overlay */
}
.shortcuts-panel.show {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
}
.shortcuts-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.shortcuts-header h3 { font-size: 1.1rem; font-weight: 600; }
.shortcuts-content {
    max-height: 70vh;
    overflow-y: auto;
    padding: 1.25rem;
}
.shortcut-group { margin-bottom: 1.5rem; }
.shortcut-group:last-child { margin-bottom: 0; }
.shortcut-group h4 {
    margin-bottom: 0.75rem;
    color: var(--primary-color);
    font-size: 0.95rem;
    font-weight: 600;
}
.shortcut-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}
.shortcut-item:last-child { border-bottom: none; }
.shortcut-item kbd {
    background: var(--medium-bg);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: monospace;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    -webkit-backdrop-filter: blur(5px);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    z-index: 1001;
}

.dark-mode .modal-content {
    background-color: var(--dark-bg);
    color: var(--text-color-dark);
}

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

.modal-body {
    padding: 1rem;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* Help, Settings, About Modal Styles */
.help-modal .modal-content,
.settings-modal .modal-content,
.about-modal .modal-content {
    max-width: 600px;
}

/* Keyboard Shortcuts Modal */
.keyboard-shortcuts {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1rem;
}

.shortcut-key {
    font-family: monospace;
    background-color: var(--light-bg);
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    border: 1px solid var(--border-color);
    display: inline-block;
}

.dark-mode .shortcut-key {
    background-color: var(--medium-bg);
    border-color: var(--border-color-dark);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    left: 1.5rem; /* Swapped to left for RTL, as it's common */
    z-index: 9999;
    display: flex;
    flex-direction: column-reverse; /* New toasts appear on top */
    gap: 0.75rem;
    align-items: flex-start; /* Align toasts to the start (left in RTL) */
}
.toast {
    min-width: 280px;
    max-width: 350px;
    padding: 1rem 1.25rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: 0 6px 15px rgba(0,0,0,0.12);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transform: translateX(-120%); /* Start off-screen to the left */
    opacity: 0;
    transition: transform var(--transition-speed) ease-out, opacity var(--transition-speed) ease-out;
    border-right: 4px solid var(--secondary-color); /* Default border on visual right */
}
.toast.show {
    transform: translateX(0);
    opacity: 1;
}
.toast i { font-size: 1.2rem; }
.toast.success { border-right-color: var(--success-color); } /* Visual right */
.toast.success i { color: var(--success-color); }
.toast.warning { border-right-color: var(--warning-color); }
.toast.warning i { color: var(--warning-color); }
.toast.error { border-right-color: var(--danger-color); }
.toast.error i { color: var(--danger-color); }
.toast.info i { color: var(--primary-color); } /* For general info */

/* Scrollbar Styling */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--light-bg); border-radius: 4px;}
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px;}
::-webkit-scrollbar-thumb:hover { background: var(--secondary-color); }

/* Utility */
.empty-list-msg {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 1rem 0;
}
.scrollable-list { /* Applied to panel-content and list-containers */
    overflow-y: auto;
    scroll-behavior: smooth;
}

/* Responsive Design */
@media (max-width: 1200px) {
    :root {
        --sidebar-width: 280px;
        --properties-panel-width: 280px;
    }
    .image-tabs { max-width: 300px; }
}

@media (max-width: 992px) { /* Tablet */
    :root {
        --sidebar-width: 250px;
        --properties-panel-width: 250px;
    }
    .header { padding: 0 1rem; }
    .canvas-header { padding: 0.5rem 1rem; }
    .logo { font-size: 1.4rem; }
    .logo i { font-size: 1.6rem; }
    .btn-primary, .btn-secondary { padding: 0.5rem 1rem; font-size: 0.85rem; }
    .btn-icon { padding: 0.5rem; }
    .btn-icon i { font-size: 1rem; }
    .image-tabs { max-width: 200px; }
}

@media (max-width: 768px) { /* Mobile */
    :root {
        --header-height: 50px;
    }

    .app-container {
        display: flex;
        flex-direction: column;
        height: 100vh;
    }

    .header {
        height: var(--header-height);
        padding: 0 0.5rem;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100;
        background-color: white;
    }

    .header-content {
        justify-content: space-between;
    }

    .logo {
        font-size: 1.2rem;
    }

    .logo i {
        font-size: 1.4rem;
    }

    .header-actions {
        gap: 0.25rem;
    }

    .header-actions .btn-secondary {
        padding: 0.4rem;
    }

    .header-actions .btn-secondary i {
        font-size: 0.9rem;
    }

    .main-content {
        flex-direction: column;
        margin-top: var(--header-height);
        height: calc(100vh - var(--header-height));
        overflow: hidden;
    }

    /* Reorganize layout for mobile */
    .effects-sidebar {
        width: 100%;
        height: 80px;
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        border-left: none;
        border-bottom: 1px solid var(--border-color);
        order: 1;
    }

    .effects-sidebar .sidebar-header {
        display: none;
    }

    .effects-sidebar .effects-categories {
        display: flex;
        flex-direction: row;
        padding: 0.5rem;
        gap: 0.5rem;
        overflow-x: auto;
        width: 100%;
    }

    .effects-sidebar .category {
        flex: 0 0 auto;
        width: 60px;
        margin-bottom: 0;
    }

    .effects-grid-sidebar {
        width: 100%;
        max-height: 30vh;
        border-left: none;
        border-bottom: 1px solid var(--border-color);
        order: 2;
    }

    .effects-grid-container {
        padding: 0.5rem;
    }

    .effects-grid {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
        gap: 0.5rem;
    }

    .effect-item {
        padding: 0.4rem;
    }

    .effect-item i {
        font-size: 1.5rem;
    }

    .canvas-area {
        order: 3;
        flex: 1;
        min-height: 0;
        position: relative;
    }

    .canvas-header {
        padding: 0.25rem 0.5rem;
        min-height: auto;
        flex-wrap: wrap;
    }

    .canvas-title h2 {
        font-size: 0.9rem;
    }

    .image-tabs {
        max-width: 100%;
        overflow-x: auto;
        margin-right: 0;
        margin-top: 0.25rem;
    }

    .canvas-actions {
        gap: 0.25rem;
    }

    .canvas-container {
        padding: 0.5rem;
    }

    .drop-zone-content {
        padding: 1rem;
    }

    .drop-zone-content i.fa-cloud-upload-alt {
        font-size: 2.5rem;
    }

    .drop-zone-content h3 {
        font-size: 1rem;
    }

    .drop-zone-content p {
        font-size: 0.8rem;
        margin-bottom: 1rem;
    }

    .upload-methods {
        margin-bottom: 0.5rem;
    }

    .canvas-controls-bar {
        padding: 0.25rem 0.5rem;
        margin-top: 0.5rem;
    }

    .properties-panel {
        width: 100%;
        max-height: 40vh;
        order: 4;
        border-right: none;
        border-top: 1px solid var(--border-color);
        overflow-y: auto;
    }

    .properties-panel.collapsed {
        max-height: var(--panel-collapsed-width);
        overflow: hidden;
    }

    .panel-header {
        padding: 0.5rem 0.75rem;
        min-height: auto;
    }

    .panel-header h3 {
        font-size: 0.9rem;
    }

    .panel-content.scrollable-list {
        padding: 0.75rem;
    }

    .no-effect-selected {
        padding: 1rem;
    }

    .no-effect-selected i {
        font-size: 2rem;
    }

    .effect-properties .effect-name {
        font-size: 1rem;
    }

    .effect-preview {
        height: 120px;
        margin-bottom: 1rem;
    }

    .property-item label {
        font-size: 0.8rem;
    }

    .range-slider-group .range-value {
        font-size: 0.8rem;
    }

    .properties-actions {
        margin-top: 1rem;
        padding-top: 1rem;
        gap: 0.5rem;
    }

    /* Modal adjustments */
    .modal-content {
        width: 95%;
        max-height: 80vh;
    }

    .modal-header {
        padding: 0.75rem;
    }

    .modal-header h3 {
        font-size: 1rem;
    }

    .modal-body {
        padding: 0.75rem;
        max-height: 60vh;
    }

    .shortcuts-panel {
        width: 95%;
    }

    .shortcuts-header {
        padding: 0.75rem;
    }

    .shortcuts-content {
        padding: 0.75rem;
        max-height: 60vh;
    }

    .shortcut-group h4 {
        font-size: 0.9rem;
    }

    .shortcut-item {
        font-size: 0.8rem;
        padding: 0.4rem 0;
    }

    .shortcut-item kbd {
        font-size: 0.75rem;
        padding: 0.2rem 0.4rem;
    }

    .toast-container {
        bottom: 0.5rem;
        left: 0.5rem;
        right: 0.5rem;
    }

    .toast {
        width: 100%;
        max-width: none;
        padding: 0.75rem 1rem;
    }

    /* تحسين التفاعل مع الأزرار */
    .btn-primary, .btn-secondary, .btn-icon {
        -webkit-tap-highlight-color: transparent;
    }
    
    /* تحسين الرسائل التوضيحية */
    .toast {
        width: 90%;
        max-width: 320px;
        font-size: 0.9rem;
        padding: 0.75rem 1rem;
    }
    
    /* تحسين التمرير في القوائم */
    .scrollable-list {
        overflow-y: auto;
    }
    
    /* تحسين منطقة السحب والإفلات */
    .drop-zone {
        min-height: 200px;
    }
    
    /* تحسين عرض المؤثرات */
    .effects-grid {
        gap: 8px;
        padding: 8px;
    }
    
    /* تحسين عرض الكانفاس */
    .canvas-workspace {
        padding: 10px;
    }
    
    /* تحسين عرض لوحة الخصائص */
    .panel-content.scrollable-list {
        padding: 10px;
    }
    
    /* تحسين عرض المودال */
    .modal-content {
        width: 95%;
        max-width: 350px;
        border-radius: 8px;
    }
    
    /* تحسين الأداء عند التمرير */
    .main-content {
        will-change: transform;
    }
    
    /* تحسين تجربة المستخدم عند النقر على العناصر */
    .effect-item:active, .category:active, .btn-primary:active, .btn-secondary:active, .btn-icon:active {
        transform: scale(0.97);
    }
    
    /* تحسين عرض الأيقونات */
    .header-actions .btn-secondary i {
        font-size: 1rem;
    }
    
    /* تحسين الخطوط */
    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    
    /* تحسين مساحات التباعد */
    .properties-panel {
        padding-bottom: 20px;
    }
}

/* Fix for very small screens */
@media (max-width: 480px) {
    .header-actions .btn-secondary {
        padding: 0.35rem;
    }

    .header-actions .btn-secondary i {
        font-size: 0.85rem;
    }

    .effects-sidebar {
        height: 70px;
    }

    .effects-sidebar .category {
        width: 50px;
    }

    .effects-sidebar .category i {
        font-size: 1.2rem;
    }

    .effects-sidebar .category .category-name {
        font-size: 0.6rem;
    }

    .effects-grid {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    }

    .drop-zone-content i.fa-cloud-upload-alt {
        font-size: 2rem;
    }

    .drop-zone-content h3 {
        font-size: 0.9rem;
    }

    .drop-zone-content p {
        font-size: 0.75rem;
    }

    .btn-primary {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
}

/* Gradient Tool Styles */
.gradient-tool-active {
    cursor: crosshair !important;
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    cursor: crosshair;
}

.gradient-line {
    position: absolute;
    height: 4px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    z-index: 11;
    cursor: move;
}

.gradient-line::before,
.gradient-line::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: white;
    border: 2px solid var(--primary-color);
    top: 50%;
    transform: translateY(-50%);
    cursor: col-resize;
    z-index: 12;
}

.gradient-line::before {
    left: 0;
    transform: translate(-50%, -50%);
}

.gradient-line::after {
    right: 0;
    transform: translate(50%, -50%);
}

.gradient-line.dragging::before,
.gradient-line.dragging::after {
    background-color: var(--primary-color);
}

/* Transparency Grid */
.transparency-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background-image: linear-gradient(45deg, var(--grid-color-1) 25%, transparent 25%),
                      linear-gradient(-45deg, var(--grid-color-1) 25%, transparent 25%),
                      linear-gradient(45deg, transparent 75%, var(--grid-color-1) 75%),
                      linear-gradient(-45deg, transparent 75%, var(--grid-color-1) 75%);
    background-size: calc(var(--grid-size) * 2) calc(var(--grid-size) * 2);
    background-position: 0 0, 0 var(--grid-size), var(--grid-size) calc(var(--grid-size) * -1), calc(var(--grid-size) * -1) 0;
    background-color: var(--grid-color-2);
    opacity: 0.5;
    z-index: -1;
}

/* Transparency Settings */
.transparency-settings {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.setting-group label {
    min-width: 100px;
    font-weight: 500;
}

.setting-group input[type="range"] {
    flex: 1;
}

.setting-group input[type="color"] {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

/* Presets and Favorites Modals */
#presetsModal .modal-content,
#favoritesModal .modal-content {
    max-width: 400px;
}

/* Dark Mode Toggle */
#darkModeBtn.active i {
    color: var(--warning-color);
}

/* Show Grid Toggle */
#showGridBtn.active i {
    color: var(--success-color);
}

/* Mobile Layout Specific Styles */
.mobile-layout {
    flex-direction: column;
}

.mobile-layout .effects-sidebar {
    order: 1;
}

.mobile-layout .effects-grid-sidebar {
    order: 2;
}

.mobile-layout .canvas-area {
    order: 3;
    flex: 1;
    min-height: 0;
}

.mobile-layout .properties-panel {
    order: 4;
}

/* Improved Touch Experience */
@media (max-width: 768px) {
    .btn-primary, .btn-secondary, .btn-icon {
        min-height: 44px; /* Improved touch target size */
        min-width: 44px;
    }
    
    .effect-item {
        min-height: 60px; /* Ensure touch targets are large enough */
    }
    
    .category {
        min-height: 44px;
    }
    
    /* Fix for drop zone on mobile */
    .drop-zone {
        display: flex !important; /* Always show when no image */
    }
    
    .drop-zone.hidden {
        display: none !important;
    }
    
    /* Improve scrolling experience */
    .scrollable-list {
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
    }
    
    /* Fix for modals on mobile */
    .modal-content {
        max-height: 80vh;
        overflow-y: auto;
    }
    
    /* Add some space at the bottom for better scrolling */
    .main-content {
        padding-bottom: 20px;
    }
    
    /* Fix for canvas controls */
    .canvas-controls-bar {
        position: fixed;
        bottom: 10px;
        left: 50%;
        transform: translateX(-50%);
        width: 90%;
        max-width: 400px;
        z-index: 50;
    }
    
    /* Fix for canvas workspace */
    .canvas-workspace {
        height: 100%;
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* Fix for dark mode toggle */
    #darkModeBtn.active i {
        color: #ffc107;
    }
    
    /* Fix for grid toggle */
    #showGridBtn.active i {
        color: #28a745;
    }
    
    /* Fix for touch events on modals */
    .modal-overlay {
        cursor: pointer;
    }
}

/* Fix for very small screens */
@media (max-width: 480px) {
    .header-content {
        flex-wrap: wrap;
    }
    
    .logo {
        margin-bottom: 5px;
    }
    
    .header-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .btn-icon {
        padding: 0.3rem;
    }
    
    .btn-icon i {
        font-size: 0.8rem;
    }
    
    .properties-panel {
        max-height: 35vh;
    }
    
    .effects-grid-sidebar {
        max-height: 25vh;
    }
    
    /* Improve upload experience */
    .drop-zone-content {
        padding: 0.75rem;
    }
    
    .upload-methods {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* تحسينات إضافية لوضع الظلام */
.dark-mode .sidebar i,
.dark-mode .effects-sidebar i,
.dark-mode .effect-item i {
    color: var(--primary-color);
}

.dark-mode .effect-item.active {
    background-color: rgba(58, 134, 255, 0.2);
    border-color: var(--primary-color);
    box-shadow: 0 0 8px rgba(58, 134, 255, 0.4);
}

.dark-mode .modal-content {
    background-color: var(--light-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

.dark-mode .modal-header,
.dark-mode .modal-footer {
    border-color: var(--border-color);
}

.dark-mode .shortcut-item {
    border-color: var(--border-color);
}

.dark-mode .shortcut-item kbd {
    background-color: var(--medium-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

.dark-mode .canvas-controls-bar {
    background-color: rgba(30, 30, 30, 0.85);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    color: var(--text-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.dark-mode .image-tab {
    background-color: var(--medium-bg);
    color: var(--text-muted);
    border-color: var(--border-color);
}

.dark-mode .image-tab.active {
    background-color: var(--light-bg);
    color: var(--primary-color);
}

.dark-mode .close-tab {
    color: var(--text-muted);
}

.dark-mode .close-tab:hover {
    color: var(--danger-color);
}

.dark-mode .image-info span {
    color: var(--text-muted);
}

/* تحسين مظهر المعاينة */
.effect-preview {
    position: relative;
    overflow: hidden;
    background-image: 
        linear-gradient(45deg, var(--grid-color-1) 25%, transparent 25%),
        linear-gradient(-45deg, var(--grid-color-1) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--grid-color-1) 75%),
        linear-gradient(-45deg, transparent 75%, var(--grid-color-1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    background-color: var(--grid-color-2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.effect-preview canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.dark-mode .effect-preview {
    border-color: var(--border-color);
}

.preview-error {
    color: var(--danger-color);
    font-size: 0.85rem;
    text-align: center;
    padding: 1rem;
}

/* تحسين مظهر الشرائط الجانبية في وضع الظلام */
.dark-mode .sidebar-section {
    border-color: var(--border-color);
}

.dark-mode .section-header h4 {
    color: var(--text-color);
}

.dark-mode .list-item, 
.dark-mode .preset-item {
    background-color: var(--medium-bg);
    border-color: var(--border-color);
}

.dark-mode .list-item:hover, 
.dark-mode .preset-item:hover {
    background-color: #2a2a2a;
}

.dark-mode .empty-list-msg {
    color: var(--text-muted);
}

/* تحسين مظهر الأزرار في الشريط الجانبي */
.dark-mode .sidebar-section .btn-primary,
.dark-mode .sidebar-section .btn-secondary {
    background-color: var(--medium-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

.dark-mode .sidebar-section .btn-primary:hover,
.dark-mode .sidebar-section .btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
}

/* تحسين مظهر الأيقونات في الشريط العلوي */
.dark-mode .header-actions .btn-icon {
    color: var(--text-muted);
}

.dark-mode .header-actions .btn-icon:hover {
    color: var(--primary-color);
    background-color: rgba(58, 134, 255, 0.1);
}

/* تحسين مظهر الأيقونات في منطقة الكانفاس */
.dark-mode .canvas-actions .btn-icon {
    color: var(--text-muted);
}

.dark-mode .canvas-actions .btn-icon:hover {
    color: var(--primary-color);
    background-color: rgba(58, 134, 255, 0.1);
}

/* تحسين مظهر منطقة السحب والإفلات */
.dark-mode .drop-zone-content i {
    color: var(--text-muted);
}

.dark-mode .drop-zone.drag-over {
    border-color: var(--primary-color);
    background-color: rgba(58, 134, 255, 0.05);
}

/* تحسين مظهر المؤثرات المفضلة */
.dark-mode .favorite-effect-btn {
    color: var(--text-muted);
}

.dark-mode .favorite-effect-btn:hover {
    color: var(--warning-color);
}

.dark-mode #favoriteEffectBtn i.fas.fa-star {
    color: var(--warning-color);
}

/* تحسين مظهر الاختصارات */
.dark-mode .shortcut-badge {
    background-color: var(--primary-color);
    color: white;
    font-size: 0.7rem;
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
    position: absolute;
    top: 5px;
    right: 5px;
}

/* تحسين تأثير lightsweep للعناصر عند التحويم */
.btn-primary::before, 
.btn-secondary::before, 
.effects-sidebar .category::before,
.effect-item::before,
.div.effects-grid-container div.effects-grid .effect-item::before,
.btn-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -100%;
    width: 40px;
    height: 200%;
    background: linear-gradient(
        to right,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(45deg);
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
    opacity: 0;
    pointer-events: none;
    z-index: 10;
}

.btn-primary:hover::before, 
.btn-secondary:hover::before,
.effects-sidebar:hover .category:hover::before,
.effect-item:hover::before,
div.effects-grid-container div.effects-grid .effect-item:hover::before,
.btn-icon:hover::before {
    left: 120%;
    opacity: 1;
}

/* تحسين وضع الظلام للشريط الجانبي */
.dark-mode .effects-sidebar {
    background-color: var(--light-bg);
    border-color: var(--border-color);
}

.dark-mode .effects-sidebar .category {
    background-color: var(--medium-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

.dark-mode .effects-sidebar .category:hover {
    background-color: #2a2a2a;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.dark-mode .effects-sidebar .category.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.dark-mode .effects-sidebar .category i {
    color: var(--primary-color);
}

.dark-mode .effects-sidebar .category.active i {
    color: white;
}

.dark-mode .effects-sidebar .category .category-name {
    color: var(--text-color);
}

.dark-mode .effects-sidebar .category.active .category-name {
    color: white;
}

/* تحسين وضع الظلام لشبكة المؤثرات */
.dark-mode div.effects-grid-container {
    background-color: var(--light-bg);
}

.dark-mode div.effects-grid-container div.effects-grid .effect-item {
    background-color: var(--medium-bg);
    border-color: var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.dark-mode div.effects-grid-container div.effects-grid .effect-item:hover {
    background-color: #2a2a2a;
    border-color: var(--primary-color);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
    transform: translateY(-4px) scale(1.05);
}

.dark-mode div.effects-grid-container div.effects-grid .effect-item i {
    color: var(--primary-color);
}

.dark-mode div.effects-grid-container div.effects-grid .effect-item span {
    color: var(--text-color);
}

.dark-mode div.effects-grid-container div.effects-grid .effect-item.active {
    background-color: rgba(58, 134, 255, 0.2);
    border-color: var(--primary-color);
    box-shadow: 0 0 8px rgba(58, 134, 255, 0.4);
}

/* إصلاح القواعد الفارغة */
.sidebar .category:first-child {
    margin-top: 0;
}

.shortcut-item:last-child {
    margin-bottom: 0;
}

.property-item select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

/* إصلاح خطأ min-height: auto */
.properties-panel {
    min-height: 0;
}

.canvas-area {
    min-height: 0;
}

/* إزالة الأنماط الداخلية من ملف HTML */
#fileInput {
    display: none;
}

.effect-properties {
    display: none;
}

#mainCanvas, #tempCanvas {
    display: none;
}

#presetsModal, #favoritesModal, #transparencyModal, #advancedModal {
    display: none;
}

/* إصلاح مشكلة onclick في modal-overlay */
.modal-overlay {
    cursor: pointer;
}

/* تحسين وضع الظلام لشريط التحكم بالكانفاس */
.dark-mode .canvas-controls-bar {
    background-color: rgba(30, 30, 30, 0.85);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    color: var(--text-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* تحسين وضع الظلام للنوافذ والعناصر الأخرى */
.dark-mode .shortcuts-panel {
    background-color: var(--light-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}

.dark-mode .shortcuts-header {
    border-color: var(--border-color);
}

.dark-mode .shortcuts-header h3 {
    color: var(--text-color);
}

.dark-mode .shortcut-group h4 {
    color: var(--primary-color);
}

.dark-mode .shortcut-item {
    border-color: var(--border-color);
    color: var(--text-color);
}

.dark-mode .shortcut-item kbd {
    background-color: var(--medium-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

.dark-mode .modal-content {
    background-color: var(--light-bg);
    border-color: var(--border-color);
}

.dark-mode .modal-header {
    border-color: var(--border-color);
}

.dark-mode .modal-header h3 {
    color: var(--text-color);
}

.dark-mode .modal-body {
    color: var(--text-color);
}

.dark-mode .modal-footer {
    border-color: var(--border-color);
}

/* زر ملء لوحة العمل */
.btn-fill-canvas {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 10;
    background-color: rgba(255, 255, 255, 0.85);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    box-shadow: var(--box-shadow);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dark-mode .btn-fill-canvas {
    background-color: rgba(30, 30, 30, 0.85);
    color: var(--text-color);
}

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

/* تحسين مظهر نافذة المساعدة والإعدادات والمعلومات */
.help-modal, .settings-modal, .about-modal {
    max-width: 600px;
    margin: 0 auto;
}

.dark-mode .help-modal, 
.dark-mode .settings-modal, 
.dark-mode .about-modal {
    background-color: var(--light-bg);
    color: var(--text-color);
}

/* تنسيق منطقة السحب والإفلات للشفافية */
.transparency-drag-area {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
    display: none;
}

.transparency-drag-area.active {
    display: block;
    pointer-events: auto;
    cursor: crosshair;
}

.transparency-drag-line {
    position: absolute;
    height: 2px;
    background: linear-gradient(to right, rgba(0, 255, 255, 0.8), rgba(255, 0, 255, 0.8));
    transform-origin: 0 0;
    display: none;
    z-index: 11;
    box-shadow: 0 0 5px rgba(255, 255, 255, 0.8);
}

.transparency-drag-point {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #fff;
    transform: translate(-50%, -50%);
    display: none;
    z-index: 12;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}

#transparencyStartPoint {
    border: 2px solid #00ffff;
}

#transparencyEndPoint {
    border: 2px solid #ff00ff;
}

.dark-mode .transparency-drag-point {
    border-color: var(--dark-bg);
}

/* تحسين مظهر الأزرار في وضع الظلام */
.dark-mode .btn-primary,
.dark-mode .btn-secondary,
.dark-mode .btn-icon {
    color: var(--text-color);
}

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

.dark-mode .btn-secondary {
    background-color: var(--medium-bg);
    border-color: var(--border-color);
}

.dark-mode input,
.dark-mode select,
.dark-mode textarea {
    background-color: var(--medium-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

/* وضع ملء الشاشة للكانفاس */
.canvas-workspace.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    background-color: var(--light-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: auto;
}

.dark-mode .canvas-workspace.fullscreen {
    background-color: var(--dark-bg);
}

/* تنسيق نوافذ المساعدة والإعدادات والمعلومات */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
    margin-right: 10px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-switch label {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
}

.toggle-switch label:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

.toggle-switch input:checked + label {
    background-color: var(--primary-color);
}

.toggle-switch input:checked + label:before {
    transform: translateX(26px);
}

.setting-group {
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.setting-group label {
    font-weight: 500;
    margin-bottom: 5px;
}

.about-logo {
    text-align: center;
    margin-bottom: 20px;
}

.about-logo i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.about-logo h2 {
    font-size: 1.8rem;
    margin: 0;
}

/* تحسين مظهر النوافذ المنبثقة */
.modal-body h4 {
    margin-top: 20px;
    margin-bottom: 10px;
    color: var(--primary-color);
    font-weight: 600;
}

.modal-body ul,
.modal-body ol {
    padding-right: 20px;
    margin-bottom: 15px;
}

.modal-body li {
    margin-bottom: 5px;
}

.dark-mode .modal-body h4 {
    color: var(--primary-color);
}

.dark-mode .toggle-switch label {
    background-color: #555;
}

.dark-mode .toggle-switch label:before {
    background-color: #ddd;
}

.dark-mode .toggle-switch input:checked + label {
    background-color: var(--primary-color);
}

/* تحسين مظهر الأزرار في وضع الظلام */
.dark-mode .btn-icon,
.dark-mode .btn-primary,
.dark-mode .btn-secondary {
    color: #f8f9fa;
}

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

.dark-mode .btn-secondary {
    background-color: #495057;
    border-color: #343a40;
}

.dark-mode .btn-icon {
    background-color: #495057;
}

.dark-mode .btn-icon:hover {
    background-color: #6c757d;
}

/* تحسين مظهر المعاينة */
.effect-preview {
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: transparent;
}

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

/* تنسيق نوافذ المساعدة والإعدادات والمعلومات */
.help-modal, .settings-modal, .about-modal {
    max-width: 600px;
    margin: 0 auto;
}

.dark-mode .help-modal, 
.dark-mode .settings-modal, 
.dark-mode .about-modal {
    background-color: var(--light-bg);
    color: var(--text-color);
}

/* تنسيق عرض اسم المؤثر في نافذة الاختصارات */
.effect-name-display {
    font-weight: 500;
    color: var(--primary-color);
    padding: 0.5rem;
    background-color: var(--medium-bg);
    border-radius: var(--border-radius);
    display: block;
    margin-top: 0.5rem;
}

.dark-mode .effect-name-display {
    background-color: var(--dark-bg);
}

/* تنسيق قائمة اختيار الاختصارات */
.shortcut-select {
    width: 100%;
    padding: 0.6rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    background-color: white;
    font-size: 1rem;
}

.dark-mode .shortcut-select {
    background-color: var(--medium-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

/* تنسيق شارة الاختصار في عنصر المؤثر */
.shortcut-badge {
    position: absolute;
    top: 5px;
    right: 5px;
    background-color: var(--primary-color);
    color: white;
    font-size: 0.7rem;
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
    font-weight: bold;
}

.dark-mode .shortcut-badge {
    background-color: var(--primary-color);
    color: white;
}

/* أنماط زر المطور وبطاقة المعلومات */
.developer-button-container {
display: flex;
justify-content: center;
margin-top: 20px;
}

.btn-sm {
padding: 0.35rem 0.8rem;
font-size: 0.85rem;
}

.developer-info-card {
margin-top: 20px;
transition: all 0.3s ease;
    overflow: hidden;
}

.signature-container {
    max-width: 100% !important;
    margin: 0 auto;
}

.signature-content {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1) !important;
    padding: 25px !important;
}

.dark-mode .signature-content {
    background: rgba(40, 40, 40, 0.7) !important;
    border-color: rgba(60, 60, 60, 0.2) !important;
}

.dark-mode .name,
.dark-mode .role,
.dark-mode .contact-item a {
    color: #eee !important;
}

.photo {
    max-width: 100%;
    height: auto !important;
    max-height: 200px !important;
}

.photo-container {
    width: 200px !important;
}

.social-icons {
    display: flex;
    margin-top: 12px;
    gap: 8px;
    justify-content: flex-start;
    flex-direction: row;
}

.social-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.5);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-icon:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.8);
}

.social-icon svg {
    color: var(--primary-color);
}

.dark-mode .social-icon {
    background: rgba(60, 60, 60, 0.5) !important;
}

.dark-mode .social-icon svg {
    color: var(--primary-color);
}

.signature-container .divider {
    margin: 10px 0;
}

.contact-item {
    display: flex;
    align-items: center;
    font-size: 13px;
    color: #4a5568;
    margin-right: 15px;
}

.contact-item a {
    color: #4a5568;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: #6366f1;
}

.icon {
    width: 14px;
    height: 14px;
    margin-right: 6px;
    fill: var(--primary-color);
}

.dark-mode .name,
.dark-mode .role,
.dark-mode .contact-item a {
    color: #eee !important;
}

.dark-mode .icon {
    fill: var(--primary-color);
}

.contact-item svg {
    color: var(--primary-color);
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
    margin-top: 12px;
}

.contact-item {
    display: flex;
    align-items: center;
    font-size: 13px;
    color: #4a5568;
    margin-right: 8px;
    white-space: nowrap;
}

.contact-item a {
    color: #4a5568;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: var(--primary-color);
}

.icon {
    width: 14px;
    height: 14px;
    margin-right: 6px;
    fill: var(--primary-color);
}

.contact-item svg {
    color: var(--primary-color);
}

.social-icons {
    display: flex;
    margin-top: 12px;
    gap: 8px;
    justify-content: flex-start;
    flex-direction: row;
}

.social-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.5);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-icon:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.8);
}

.social-icon svg {
    color: var(--primary-color);
}

.dark-mode .signature-content {
    background: rgba(40, 40, 40, 0.7) !important;
    border-color: rgba(60, 60, 60, 0.2) !important;
}

.dark-mode .name,
.dark-mode .role,
.dark-mode .contact-item a {
    color: #eee !important;
}

.dark-mode .icon {
    fill: var(--primary-color);
}

.dark-mode .contact-item svg {
    color: var(--primary-color);
}

.dark-mode .social-icon {
    background: rgba(60, 60, 60, 0.5) !important;
}

.dark-mode .social-icon svg {
    color: var(--primary-color);
}

.info-container {
    padding: 10px;
}