:root {
    --primary: #4361ee;
    --primary-light: #e0e6ff;
    --primary-dark: #3a56d4;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --danger: #f72585;
    --success: #4cc9f0;
    --warning: #f8961e;
    --info: #4895ef;
    --radius-sm: 0.25rem;
    --radius: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --transition: all 0.2s ease-in-out;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.5;
    color: var(--gray-800);
    background-color: var(--gray-100);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 5px;
}

.headerp {
    text-align: center;
    margin-bottom: var(--space-xl);
    margin-top: 0.3rem;
    padding: var(--space-md);
    background-color: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    
}

h1 {
    font-size: var(--text-2xl);
    color: var(--primary);
    margin-bottom: var(--space-sm);
    font-weight: 700;
}

.subtitle {
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto;
}

.tool-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

@media (min-width: 992px) {
    .tool-container {
        grid-template-columns: 1fr 1fr;
    }
}

.panel {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

.panel:hover {
    box-shadow: var(--shadow-md);
}

.panel-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--gray-100);
}

.panel-title {
    font-weight: 600;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.panel-title i {
    color: var(--primary);
}

.panel-actions {
    display: flex;
    gap: var(--space-sm);
}

.upload-area {
    padding: var(--space-xl);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    margin: var(--space-md);
}

.upload-area.active {
    border-color: var(--primary);
    background-color: var(--primary-light);
}

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

.upload-text {
    margin-bottom: var(--space-md);
}

.upload-text h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-xs);
    color: var(--gray-800);
}

.upload-text p {
    color: var(--gray-600);
    font-size: var(--text-sm);
}

.btn {
    padding: var(--space-sm) var(--space-md);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-size: var(--text-sm);
    box-shadow: var(--shadow-sm);
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-danger:hover:not(:disabled) {
    background: #e5177b;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    box-shadow: none;
}

#fileInput {
    display: none;
}

.preview-container {
    position: relative;
    height: 300px;
    background-color: var(--gray-100);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin: var(--space-md);
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas {
    max-width: 100%;
    max-height: 100%;
    display: none;
}

#previewImage {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.empty-state {
    text-align: center;
    padding: var(--space-xl);
    color: var(--gray-500);
}

.empty-state i {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.empty-state p {
    font-size: var(--text-lg);
}

.controls {
    padding: var(--space-md);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
    border-top: 1px solid var(--gray-200);
}

.resize-options {
    background: var(--white);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    margin: var(--space-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.platform-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--space-sm);
}

.platform-btn {
    padding: var(--space-sm);
    border-radius: var(--radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--text-xs);
    background: var(--gray-200);
    color: var(--gray-800);
}

.platform-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
}

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

.platform-btn i {
    font-size: 1.5rem;
}

.custom-size {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.size-inputs {
    display: flex;
    gap: var(--space-sm);
    flex: 1;
}

.size-input {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.size-input label {
    font-size: var(--text-xs);
    color: var(--gray-600);
    font-weight: 500;
}

.size-input input {
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-family: inherit;
}

.aspect-ratio {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.aspect-btn {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    background: var(--gray-200);
    color: var(--gray-800);
    border: none;
    cursor: pointer;
}

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

.quality-control {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.quality-slider {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.quality-value {
    min-width: 40px;
    text-align: center;
    font-weight: 500;
    font-family: monospace;
}

input[type="range"] {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: var(--gray-300);
    -webkit-appearance: none;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    transition: var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 0 0 4px rgba(67, 97, 238, 0.2);
}

.download-options {
    margin-top: var(--space-lg);
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
    padding: 0 var(--space-md) var(--space-md);
}

.download-btn {
    flex: 1;
    min-width: 150px;
}

.loading {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    z-index: 10;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
    border-radius: var(--radius-lg);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--primary-light);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.progress-bar {
    width: 80%;
    max-width: 300px;
    height: 8px;
    background-color: var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    margin-top: var(--space-sm);
}

.progress {
    height: 100%;
    background-color: var(--primary);
    width: 0%;
    transition: width 0.3s ease;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--space-md);
    right: var(--space-md);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    max-width: 350px;
    width: 100%;
}

.toast {
    padding: var(--space-md);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    animation: slideIn 0.3s ease-out;
    transform: translateX(0);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.toast.hide {
    animation: slideOut 0.3s ease-in;
    transform: translateX(120%);
}

.toast::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    height: 4px;
    width: 100%;
    background: rgba(255,255,255,0.5);
    animation: progressBar 5s linear forwards;
}

@keyframes progressBar {
    0% { width: 100%; }
    100% { width: 0%; }
}

@keyframes slideIn {
    from { transform: translateX(120%); }
    to { transform: translateX(0); }
}

@keyframes slideOut {
    from { transform: translateX(0); }
    to { transform: translateX(120%); }
}

.toast.success {
    background-color: var(--success);
    color: white;
}

.toast.error {
    background-color: var(--danger);
    color: white;
}

.toast.info {
    background-color: var(--info);
    color: white;
}

.toast.warning {
    background-color: var(--warning);
    color: white;
}

.toast-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.toast-content {
    flex: 1;
    font-size: var(--text-sm);
}

.toast-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    font-size: 1rem;
    opacity: 0.8;
    transition: var(--transition);
}

.toast-close:hover {
    opacity: 1;
}

/* Uploaded files preview */
.uploaded-files {
    max-height: 200px;
    overflow-y: auto;
    margin: 0 var(--space-md) var(--space-md);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-sm);
    display: none;
}

.uploaded-files-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--gray-100);
    border-radius: var(--radius);
    margin-bottom: var(--space-sm);
}

.uploaded-files-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--gray-700);
}

.uploaded-files-count {
    font-size: var(--text-xs);
    background-color: var(--primary);
    color: white;
    padding: 2px 6px;
    border-radius: 10px;
}

.uploaded-files-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--space-sm);
}

.uploaded-file {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    height: 80px;
    background-color: var(--gray-100);
    transition: var(--transition);
    border: 2px solid transparent;
}

.uploaded-file.selected {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.uploaded-file-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.uploaded-file-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 2px 4px;
    font-size: var(--text-xs);
    display: flex;
    justify-content: space-between;
}

.uploaded-file-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 80%;
}

.uploaded-file-size {
    font-family: monospace;
}

.uploaded-file-remove {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 18px;
    height: 18px;
    background-color: var(--danger);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
}

.uploaded-file:hover .uploaded-file-remove {
    opacity: 1;
}

/* Batch actions */
.batch-actions {
    display: flex;
    gap: var(--space-sm);
    padding: 0 var(--space-md) var(--space-md);
    justify-content: flex-end;
}

/* Format control */
.format-control {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.format-control label {
    font-size: var(--text-sm);
    color: var(--gray-700);
    font-weight: 500;
}

.format-control select {
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-family: inherit;
    background-color: var(--white);
    cursor: pointer;
}

/* Results Container */
.results-container {
    display: none;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    margin-top: var(--space-xl);
    padding: var(--space-md);
    transition: var(--transition);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--gray-200);
}

.results-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.results-title i {
    color: var(--primary);
}

.results-count {
    font-size: var(--text-sm);
    color: var(--gray-600);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--space-md);
    max-height: 400px;
    overflow-y: auto;
    padding: var(--space-sm);
}

.result-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--gray-100);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.result-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.result-image {
    width: 100%;
    height: 120px;
    object-fit: contain;
    background: white;
    border-bottom: 1px solid var(--gray-200);
}

.result-info {
    padding: var(--space-sm);
    text-align: center;
}

.result-dimensions {
    font-size: var(--text-xs);
    color: var(--gray-600);
    margin-bottom: var(--space-xs);
    font-family: monospace;
}

.result-name {
    font-size: var(--text-xs);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: var(--space-sm);
}

.result-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
}

.result-download-btn {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--text-xs);
    border-radius: var(--radius);
}

.results-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--gray-200);
}

.tool-description-container {
    background: white;
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    max-width: 1200px;
    margin: 2rem auto;
    font-family: 'Inter', sans-serif;
}

.tool-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.tool-header i {
    font-size: 2.5rem;
    color: #4361ee;
    margin-bottom: 1rem;
}

.tool-header h2 {
    font-size: 1.75rem;
    color: #2b2d42;
    margin-bottom: 0.5rem;
}

.tool-header .subtitle {
    color: #6c757d;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.5;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.feature-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.feature-icon {
    background: #e0e6ff;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon i {
    color: #4361ee;
    font-size: 1.25rem;
}

.feature-content h3 {
    font-size: 1.1rem;
    color: #2b2d42;
    margin-bottom: 0.5rem;
}

.feature-content p {
    color: #6c757d;
    font-size: 0.95rem;
    line-height: 1.5;
}

.cta-section {
    text-align: center;
    margin-top: 2.5rem;
}

.cta-button {
    background: #4361ee;
    color: white;
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 6px rgba(67, 97, 238, 0.2);
}

.cta-button:hover {
    background: #3a56d4;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(67, 97, 238, 0.25);
}

.cta-button i {
    font-size: 0.9rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .tool-description-container {
        padding: 1.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }

    .results-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .results-footer {
        flex-direction: column;
    }

    .results-footer .btn {
        width: 100%;
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .tool-container {
        grid-template-columns: 1fr;
    }
    
    .upload-area, .preview-container {
        height: 200px;
    }
    
    .preview-container {
        height: 250px;
    }
    
    .platform-options {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
    
    .download-options {
        flex-direction: column;
    }
    
    .download-btn {
        width: 100%;
    }

    .uploaded-files-list {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    }
}

@media (max-width: 480px) {
    
    .panel-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    .panel-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .upload-area {
        padding: var(--space-lg);
    }
    
    .controls {
        flex-direction: column;
    }
    
    .controls .btn {
        width: 100%;
    }

    .size-inputs {
        flex-direction: column;
    }

    .uploaded-files-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .blog-container {
        padding: var(--space-md);
    }

    .blog-title {
        font-size: var(--text-lg);
    }

    .result-item {
        height: auto;
    }

    .result-image {
        height: 100px;
    }
}