:root {
    --primary-bg: #0a0a1a;
    --secondary-bg: #12122a;
    --accent-blue: #2563eb;
    --light-blue: #3b82f6;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --border-color: #1e293b;
    --card-bg: #1a1b2e;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

header {
    background: linear-gradient(135deg, var(--secondary-bg), var(--accent-blue));
    color: var(--text-primary);
    text-align: center;
    padding: 1.5rem 0;
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    margin: 0;
    font-size: 2rem;
}

.back-btn {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: bold;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background-color 0.3s;
    background-color: rgba(255, 255, 255, 0.1);
}

.back-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.cropper-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.upload-section, .preview-section {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.drop-area {
    border: 2px dashed var(--accent-blue);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    margin-bottom: 1.5rem;
    transition: background-color 0.3s;
    background-color: rgba(37, 99, 235, 0.05);
}

.drop-area.highlight {
    background-color: rgba(37, 99, 235, 0.15);
}

.drop-area p {
    margin: 0 0 1rem 0;
    font-weight: 600;
    color: var(--text-secondary);
}

.drop-area span {
    display: block;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.drop-area input[type="file"] {
    display: none;
}

.drop-area label {
    background: rgba(37, 99, 235, 0.1);
    color: var(--light-blue);
    border: 1px solid var(--accent-blue);
    border-radius: 5px;
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
}

.drop-area label:hover {
    background: var(--accent-blue);
    color: white;
}

.options-section {
    margin-bottom: 1.5rem;
}

.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.input-group select, .input-group input[type="number"] {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    background-color: var(--secondary-bg);
    color: var(--text-primary);
}

.custom-ratio {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

button {
    background: linear-gradient(135deg, var(--accent-blue), var(--light-blue));
    color: white;
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 1rem;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
}

button:disabled {
    background: #374151;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.cropper-preview, .result-preview {
    margin-bottom: 2rem;
}

.cropper-preview h3, .result-preview h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.image-placeholder {
    background: var(--secondary-bg);
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 2rem;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-placeholder p {
    color: var(--text-secondary);
    font-style: italic;
}

#image-to-crop {
    max-height: 400px;
    background-color: var(--secondary-bg);
    padding: 5px;
    border-radius: 5px;
}

#cropped-image {
    max-width: 100%;
    max-height: 300px;
    display: block;
    margin: 0 auto;
    border-radius: 5px;
    background-color: var(--secondary-bg);
    padding: 5px;
}

/* Cropper.js custom styles */
.cropper-view-box,
.cropper-face {
    border-radius: 50%;
}

.cropper-view-box {
    outline: 2px solid var(--accent-blue);
    outline-color: rgba(37, 99, 235, 0.75);
}

.cropper-point {
    background-color: var(--accent-blue);
    width: 8px;
    height: 8px;
}

.cropper-line {
    background-color: var(--accent-blue);
    opacity: 0.3;
}

@media (max-width: 768px) {
    .cropper-container {
        grid-template-columns: 1fr;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .custom-ratio {
        grid-template-columns: 1fr;
    }
    
    .image-placeholder {
        height: 300px;
    }
    
    #image-to-crop {
        max-height: 300px;
    }
}