:root {
    --bg-gradient-start: #e0ffff;
    --bg-gradient-middle: #b0e0e6;
    --bg-gradient-end: #87ceeb;
    
    --container-bg: rgba(240, 248, 255, 0.95);
    --container-border: transparent;
    --text-primary: #333;
    --text-secondary: #666;
    --text-light: #ffffff;
    
    --upload-border: #4682b4;
    --upload-border-hover: #5f9ea0;
    --upload-bg: rgba(70, 130, 180, 0.1);
    --upload-bg-hover: rgba(95, 158, 160, 0.2);
    --upload-icon: #4682b4;
    --upload-icon-hover: #5f9ea0;
    
    --dragover-border: #4ecdc4;
    --dragover-bg: rgba(78, 205, 196, 0.2);
    
    --result-bg-start: #f0f8ff;
    --result-bg-end: #e6f3ff;
    --result-content-bg: rgba(255, 255, 255, 0.9);
    --result-content-text: #333;
    --result-border-left: #4682b4;
    
    --button-bg-start: #4682b4;
    --button-bg-end: #5f9ea0;
    --button-text: white;
    
    --clear-btn-start: #ff6b6b;
    --clear-btn-end: #ee5a52;
    
    --open-link-start: #28a745;
    --open-link-end: #218838;
    
    --formats-bg: rgba(70, 130, 180, 0.1);
    --formats-text: #666;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    transition: all 0.5s ease;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-middle) 50%, var(--bg-gradient-end) 100%);
}

body.rtl {
    direction: rtl;
    font-family: 'Segoe UI', 'Arial', 'Tahoma', sans-serif;
}

.container {
    background: var(--container-bg);
    border: 1px solid var(--container-border);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    max-width: 700px;
    width: 100%;
    text-align: center;
    transition: all 0.5s ease;
    position: relative;
}

.language-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, var(--button-bg-start) 0%, var(--button-bg-end) 100%);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(70, 130, 180, 0.3);
    z-index: 10;
}

body.rtl .language-toggle {
    right: auto;
    left: 20px;
}

.language-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(70, 130, 180, 0.4);
}

.lang-icon {
    font-size: 1.2rem;
}

.lang-text {
    font-size: 0.95rem;
}

.header {
    margin-bottom: 30px;
    margin-top: 20px;
}

.app-icon {
    font-size: 3.5rem;
    margin-bottom: 15px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

h1 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 2.5rem;
    font-weight: 300;
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.upload-area {
    border: 3px dashed var(--upload-border);
    background: var(--upload-bg);
    border-radius: 15px;
    padding: 50px 30px;
    margin: 30px 0;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--upload-border-hover);
    background: var(--upload-bg-hover);
    transform: translateY(-2px);
}

.upload-area.dragover {
    border-color: var(--dragover-border);
    background: var(--dragover-bg);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 5rem;
    margin-bottom: 20px;
    transition: all 0.3s ease;
    color: var(--upload-icon);
}

.upload-area:hover .upload-icon {
    color: var(--upload-icon-hover);
    transform: scale(1.1);
}

.upload-text {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 10px;
    font-weight: 500;
}

.upload-subtext {
    color: var(--text-secondary);
    font-size: 1rem;
}

#fileInput {
    display: none;
}

.preview-container {
    margin: 30px 0;
    display: none;
}

.image-preview {
    max-width: 100%;
    max-height: 300px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    margin-bottom: 20px;
}

.result {
    background: linear-gradient(135deg, var(--result-bg-start) 0%, var(--result-bg-end) 100%);
    margin-top: 30px;
    padding: 30px;
    border-radius: 15px;
    display: none;
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result h3 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-weight: 500;
    font-size: 1.4rem;
}

.result-content {
    background: var(--result-content-bg);
    padding: 20px;
    border-radius: 12px;
    word-break: break-all;
    color: var(--result-content-text);
    font-family: 'Courier New', monospace;
    border-left: 5px solid var(--result-border-left);
    text-align: left;
    max-height: 200px;
    overflow-y: auto;
    font-size: 1rem;
    line-height: 1.5;
}

body.rtl .result-content {
    border-left: none;
    border-right: 5px solid var(--result-border-left);
    text-align: right;
}

.action-buttons {
    margin-top: 25px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.big-button {
    background: linear-gradient(135deg, var(--button-bg-start) 0%, var(--button-bg-end) 100%);
    color: var(--button-text);
    border: none;
    padding: 18px 25px;
    border-radius: 15px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 5px 15px rgba(70, 130, 180, 0.3);
    min-height: 90px;
}

.big-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(70, 130, 180, 0.4);
}

.big-button:active {
    transform: translateY(-1px);
}

.button-icon {
    font-size: 2.2rem;
    display: block;
}

.button-label {
    font-size: 0.95rem;
    display: block;
}

.clear-btn {
    background: linear-gradient(135deg, var(--clear-btn-start) 0%, var(--clear-btn-end) 100%) !important;
}

.clear-btn:hover {
    box-shadow: 0 10px 25px rgba(255, 107, 107, 0.4);
}

.open-link-btn {
    background: linear-gradient(135deg, var(--open-link-start) 0%, var(--open-link-end) 100%) !important;
}

.open-link-btn:hover {
    box-shadow: 0 10px 25px rgba(40, 167, 69, 0.4);
}

.status {
    margin: 20px 0;
    padding: 15px;
    border-radius: 12px;
    font-weight: 500;
    display: none;
}

.status.processing {
    background: rgba(255, 193, 7, 0.2);
    color: #856404;
    border-left: 4px solid #ffc107;
}

body.rtl .status.processing {
    border-left: none;
    border-right: 4px solid #ffc107;
}

.status.success {
    background: rgba(40, 167, 69, 0.2);
    color: #155724;
    border-left: 4px solid #28a745;
}

body.rtl .status.success {
    border-left: none;
    border-right: 4px solid #28a745;
}

.status.error {
    background: rgba(220, 53, 69, 0.2);
    color: #721c24;
    border-left: 4px solid #dc3545;
}

body.rtl .status.error {
    border-left: none;
    border-right: 4px solid #dc3545;
}

.info-section {
    margin-top: 30px;
}

.quality-note {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.15) 0%, rgba(255, 152, 0, 0.15) 100%);
    border: 2px solid rgba(255, 193, 7, 0.4);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    text-align: left;
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.1);
}

body.rtl .quality-note {
    text-align: right;
}

.note-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.note-content {
    color: #856404;
    font-size: 0.95rem;
    line-height: 1.5;
}

.note-content strong {
    display: block;
    margin-bottom: 5px;
    font-size: 1.05rem;
}

.supported-formats {
    background: var(--formats-bg);
    padding: 15px;
    border-radius: 10px;
    font-size: 0.9rem;
    color: var(--formats-text);
    margin-bottom: 15px;
}

.test-button {
    background: linear-gradient(135deg, var(--button-bg-start) 0%, var(--button-bg-end) 100%);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 25px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.test-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(70, 130, 180, 0.3);
}

@media (max-width: 768px) {
    .container {
        padding: 30px 20px;
        margin: 10px;
    }

    .language-toggle {
        top: 15px;
        right: 15px;
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    body.rtl .language-toggle {
        right: auto;
        left: 15px;
    }
    
    .app-icon {
        font-size: 2.5rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .upload-area {
        padding: 40px 20px;
    }
    
    .upload-icon {
        font-size: 4rem;
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
    }

    .big-button {
        min-height: 80px;
    }

    .quality-note {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    body.rtl .quality-note {
        text-align: center;
    }
}