/* CSS Reset وتنسيقات أساسية */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Cairo', 'Inter', sans-serif;
}

:root {
    --primary: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --darker: #0a1122;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f1f5f9;
    --white: #ffffff;
    --sidebar-width: 70px;
    --header-height: 60px;
    --border-radius: 10px;
    --transition: all 0.3s ease;
}

body {
    background-color: var(--dark);
    color: var(--light);
    height: 100vh;
    overflow: hidden;
    direction: rtl;
}

body[dir="ltr"] {
    direction: ltr;
    text-align: left;
}

body[dir="ltr"] .sidebar {
    left: 0;
    right: auto;
    border-left: none;
    border-right: 1px solid var(--dark-light);
}

body[dir="ltr"] .main-content {
    margin-right: 0;
    margin-left: var(--sidebar-width);
}

body[dir="ltr"] .gallery {
    left: auto;
    right: 0;
    border-left: 1px solid var(--dark-light);
    transform: translateX(100%);
}

body[dir="ltr"] .gallery.open {
    transform: translateX(0);
}

body[dir="ltr"] .gallery-toggle-btn {
    left: auto;
    right: 20px;
}

body[dir="ltr"] .instructions {
    right: auto;
    left: calc(var(--sidebar-width) + 30px);
}

body[dir="ltr"] .lang-menu {
    left: auto;
    right: 20px;
}

body[dir="ltr"] .success-message,
body[dir="ltr"] .error-message {
    right: auto;
    left: 20px;
    border-left: none;
    border-right: 4px solid;
}

body[dir="ltr"] .success-message {
    border-right-color: var(--secondary);
}

body[dir="ltr"] .error-message {
    border-right-color: var(--danger);
}

/* التمرير المخصص */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--gray);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-light);
}

/* الهيدر */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
    background-color: var(--darker);
    padding: 0 20px;
    border-bottom: 1px solid var(--dark-light);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.header-left, .header-center, .header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    box-shadow: 0 4px 10px rgba(59, 130, 246, 0.3);
}

.app-title {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--primary), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: none;
}

@media (min-width: 768px) {
    .app-title {
        display: block;
    }
}

.grid-size-select {
    background-color: var(--dark-light);
    color: var(--light);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius);
    padding: 8px 12px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    min-width: 90px;
}

.grid-size-select:hover {
    border-color: var(--primary);
}

.grid-size-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
}

.undo-redo {
    display: flex;
    gap: 5px;
    background-color: var(--dark-light);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius);
    padding: 4px;
}

.tool-btn {
    background: transparent;
    border: none;
    color: var(--light);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.tool-btn:hover:not(:disabled) {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.tool-btn:disabled {
    color: var(--gray);
    cursor: not-allowed;
}

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

.action-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.clear-btn {
    background-color: var(--dark-light);
    color: var(--light);
    border: 1px solid var(--gray);
}

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

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

.save-btn:hover {
    background-color: #0da271;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.download-dropdown {
    position: relative;
}

.download-btn {
    background-color: var(--dark-light);
    color: var(--light);
    border: 1px solid var(--gray);
}

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

.download-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 180px;
    background-color: var(--dark-light);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius);
    padding: 8px 0;
    margin-top: 5px;
    display: none;
    z-index: 200;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.download-dropdown:hover .download-menu {
    display: block;
}

.download-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 10px 16px;
    background: transparent;
    border: none;
    color: var(--light);
    text-align: right;
    cursor: pointer;
    transition: var(--transition);
}

.download-option:hover {
    background-color: rgba(59, 130, 246, 0.2);
}

.format-ext {
    font-family: monospace;
    color: var(--gray-light);
    font-size: 0.8rem;
}

.mode-toggle {
    display: flex;
    background-color: var(--dark-light);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius);
    padding: 4px;
    gap: 4px;
}

.mode-btn {
    padding: 8px 16px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--gray-light);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.9rem;
}

.mode-btn:hover {
    color: var(--light);
}

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

.lang-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: var(--dark-light);
    color: var(--light);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

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

/* الشريط الجانبي */
.sidebar {
    position: fixed;
    right: 0;
    top: var(--header-height);
    bottom: 0;
    width: var(--sidebar-width);
    background-color: var(--darker);
    border-left: 1px solid var(--dark-light);
    padding: 20px 10px;
    display: flex;
    flex-direction: column;
    gap: 30px;
    z-index: 90;
    transition: width 0.3s ease;
    overflow-y: auto;
}

.sidebar:hover {
    width: 200px;
}

.sidebar h3 {
    font-size: 0.9rem;
    color: var(--gray-light);
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: none;
    white-space: nowrap;
}

.sidebar:hover h3 {
    display: block;
}

.tools {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.colors-section .color-picker {
    margin-bottom: 20px;
}

.color-picker input[type="color"] {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    background: transparent;
    padding: 0;
    display: block;
    margin: 0 auto;
}

.color-picker input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-picker input[type="color"]::-webkit-color-swatch {
    border: 3px solid var(--dark-light);
    border-radius: 50%;
}

.sidebar:hover .color-picker input[type="color"] {
    margin: 0;
}

.color-presets {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-top: 10px;
}

.sidebar:hover .color-presets {
    grid-template-columns: repeat(4, 1fr);
}

.color-preset {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    margin: 0 auto;
}

.sidebar:hover .color-preset {
    margin: 0;
    width: 35px;
    height: 35px;
}

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

.color-preset.active {
    border-color: white;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.info-section {
    margin-top: auto;
}

.info-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.85rem;
    color: var(--gray-light);
    display: none;
    white-space: nowrap;
}

.sidebar:hover .info-item {
    display: flex;
}

.info-item span:last-child {
    color: var(--light);
    font-weight: 500;
}

/* المحتوى الرئيسي */
.main-content {
    margin-right: var(--sidebar-width);
    padding: 20px;
    height: calc(100vh - var(--header-height));
    overflow: hidden;
    position: relative;
}

.pixel-editor, .voxel-viewer {
    width: 100%;
    height: 100%;
    display: none;
}

.pixel-editor.active, .voxel-viewer.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.editor-container {
    background-color: var(--dark-light);
    padding: 20px;
    border-radius: var(--border-radius);
    border: 1px solid var(--gray);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    max-width: 90%;
    max-height: 90%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.grid-container {
    display: grid;
    background-color: #0a1122;
    border: 1px solid var(--darker);
    overflow: hidden;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5);
    touch-action: none;
    user-select: none;
    /* إزالة الفجوات بين البكسلز */
    grid-gap: 0;
}

.pixel {
    cursor: crosshair;
    transition: background-color 0.1s;
    position: relative;
    /* إزالة الحدود */
    border: none !important;
}

.pixel:hover::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
}

/* مشاهد 3D */
.viewer-container {
    width: 100%;
    height: 100%;
    position: relative;
    background-color: var(--dark-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--gray);
    overflow: hidden;
}

#voxelCanvas {
    width: 100%;
    height: 100%;
    display: block;
    background-color: #0f172a;
}

.viewer-controls {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    padding: 10px;
    border-radius: var(--border-radius);
    border: 1px solid var(--gray);
}

.control-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    padding: 10px;
    background-color: var(--dark-light);
    color: var(--light);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.8rem;
    min-width: 70px;
}

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

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

/* المعرض */
.gallery {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 320px;
    background-color: var(--darker);
    border-left: 1px solid var(--dark-light);
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 5px 0 20px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
}

.gallery.open {
    transform: translateX(0);
}

.gallery-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--dark-light);
}

.gallery-header h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    font-size: 1.3rem;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--gray-light);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.2rem;
}

.close-btn:hover {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.gallery-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.empty-gallery {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray);
}

.empty-gallery i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--gray-light);
}

.empty-gallery p:first-of-type {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--gray-light);
}

.artwork-item {
    background-color: var(--dark-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--gray);
    padding: 15px;
    margin-bottom: 15px;
    transition: var(--transition);
}

.artwork-item:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.artwork-preview {
    width: 100%;
    aspect-ratio: 1;
    background-color: #0a1122;
    border-radius: 8px;
    margin-bottom: 10px;
    overflow: hidden;
    display: grid;
    border: 1px solid var(--darker);
    /* إزالة الفجوات في المعاينات */
    grid-gap: 0;
}

.artwork-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.artwork-name {
    font-weight: 600;
    font-size: 1rem;
    color: var(--light);
}

.artwork-size {
    font-size: 0.8rem;
    color: var(--gray-light);
    font-family: monospace;
}

.artwork-actions {
    display: flex;
    gap: 10px;
}

.load-btn, .delete-btn {
    flex: 1;
    padding: 8px 12px;
    border-radius: 8px;
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.85rem;
}

.load-btn {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--primary);
}

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

.delete-btn {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.gallery-toggle-btn {
    position: fixed;
    bottom: 20px;
    left: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    z-index: 150;
    box-shadow: 0 5px 15px rgba(59, 130, 246, 0.4);
}

.gallery-toggle-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.5);
}

/* قائمة اللغة */
.lang-menu {
    position: fixed;
    top: 70px;
    left: 20px;
    width: 200px;
    background-color: var(--dark-light);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius);
    padding: 10px 0;
    display: none;
    z-index: 200;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.lang-menu.open {
    display: block;
}

.lang-option {
    display: flex;
    flex-direction: column;
    padding: 12px 16px;
    cursor: pointer;
    transition: var(--transition);
}

.lang-option:hover {
    background-color: rgba(59, 130, 246, 0.2);
}

.lang-name {
    font-size: 0.9rem;
    color: var(--gray-light);
    text-transform: uppercase;
}

.lang-native {
    font-size: 1rem;
    color: var(--light);
    font-weight: 500;
}

/* التعليمات */
.instructions {
    position: fixed;
    bottom: 20px;
    right: calc(var(--sidebar-width) + 30px);
    width: 300px;
    background-color: var(--dark-light);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    z-index: 100;
}

.instructions-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background-color: rgba(59, 130, 246, 0.1);
    border-bottom: 1px solid var(--gray);
}

.instructions-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    font-size: 1rem;
}

.close-btn-small {
    background: transparent;
    border: none;
    color: var(--gray-light);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.close-btn-small:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--light);
}

.instructions-content {
    padding: 16px;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--gray-light);
}

/* النماذج */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 300;
    display: none;
}

.modal.open {
    display: flex;
}

.modal-content {
    width: 90%;
    max-width: 600px;
    background-color: var(--darker);
    border-radius: var(--border-radius);
    border: 1px solid var(--gray);
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--dark-light);
    background-color: rgba(59, 130, 246, 0.1);
}

.modal-header h3 {
    color: var(--primary);
}

.close-modal {
    background: transparent;
    border: none;
    color: var(--gray-light);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

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

.modal-body {
    padding: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--light);
    font-weight: 500;
}

.form-group input[type="text"] {
    width: 100%;
    padding: 12px;
    background-color: var(--dark-light);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius);
    color: var(--light);
    font-size: 1rem;
}

.form-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
}

.preview-grid {
    width: 100px;
    height: 100px;
    background-color: #0a1122;
    border-radius: 8px;
    border: 1px solid var(--darker);
    overflow: hidden;
    display: grid;
    margin-top: 10px;
    /* إزالة الفجوات في المعاينة */
    grid-gap: 0;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid var(--dark-light);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.btn-primary, .btn-secondary {
    padding: 10px 20px;
    border-radius: var(--border-radius);
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

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

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

.btn-secondary {
    background-color: var(--dark-light);
    color: var(--light);
    border: 1px solid var(--gray);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* نماذج التحميل الجديدة */
.download-options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.download-option-card {
    background-color: var(--dark-light);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    padding: 15px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.download-option-card:hover {
    background-color: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-3px);
}

.download-option-card.selected {
    background-color: rgba(59, 130, 246, 0.2);
    border-color: var(--primary);
}

.format-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 1.5rem;
    color: white;
}

.download-option-card h4 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--light);
}

.download-option-card p {
    font-size: 0.8rem;
    color: var(--gray-light);
    margin-bottom: 10px;
    line-height: 1.4;
}

.format-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
}

.format-ext {
    font-family: monospace;
    color: var(--primary);
    font-weight: 600;
}

.format-size {
    color: var(--gray);
}

.model-details {
    background-color: var(--dark-light);
    border-radius: var(--border-radius);
    padding: 15px;
    margin-top: 10px;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

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

.detail-item span:first-child {
    color: var(--gray-light);
}

.detail-item span:last-child {
    color: var(--light);
    font-weight: 500;
}

/* نافذة التحميل */
.loading-modal {
    max-width: 400px;
}

.loading-content {
    text-align: center;
    padding: 30px;
}

.loading-spinner {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.loading-content h3 {
    margin-bottom: 10px;
    color: var(--light);
}

.loading-content p {
    color: var(--gray-light);
    margin-bottom: 20px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background-color: var(--dark-light);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 15px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    width: 0%;
    transition: width 0.3s ease;
}

.loading-details {
    font-size: 0.85rem;
    color: var(--gray);
}

/* رسائل النجاح والفشل */
.success-message, .error-message {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 400;
    animation: slideIn 0.3s ease;
    max-width: 300px;
}

.success-message {
    background-color: rgba(16, 185, 129, 0.9);
    color: white;
    border-left: 4px solid var(--secondary);
}

.error-message {
    background-color: rgba(239, 68, 68, 0.9);
    color: white;
    border-left: 4px solid var(--danger);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* التكيف مع الشاشات الصغيرة */
@media (max-width: 768px) {
    .header-center {
        display: none;
    }
    
    .header-right .lang-btn span {
        display: none;
    }
    
    .sidebar {
        width: 60px;
    }
    
    .main-content {
        margin-right: 60px;
    }
    
    .instructions {
        display: none;
    }
    
    .viewer-controls {
        flex-wrap: wrap;
        justify-content: center;
        width: 90%;
    }
    
    .control-btn {
        min-width: 60px;
        padding: 8px;
        font-size: 0.7rem;
    }
    
    .download-options-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        max-width: 95%;
    }
}

@media (max-width: 480px) {
    .download-options-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-body {
        padding: 15px;
    }
    
    .modal-footer {
        padding: 15px;
    }
}