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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    min-height: 100vh;
    padding: 0;
    color: #333;
    animation: gradientShift 15s ease infinite;
    background-size: 200% 200%;
}

.top-nav {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: #f5576c;
    text-decoration: none;
    transition: transform 0.2s;
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 1rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    color: #495057;
    font-weight: 600;
    transition: all 0.2s;
}

.nav-link:hover {
    background: #f8f9fa;
    color: #f5576c;
}

.nav-link.active {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.container {
    max-width: 1400px;
    margin: 2rem auto;
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 4px 20px rgba(245, 87, 108, 0.3);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

.controls {
    padding: 2rem;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.control-group {
    display: flex;
    flex-direction: column;
}

.control-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #495057;
}

.control-group input,
.control-group select {
    padding: 0.75rem;
    border: 2px solid #dee2e6;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.control-group input:focus,
.control-group select:focus {
    outline: none;
    border-color: #f5576c;
    box-shadow: 0 0 0 3px rgba(245, 87, 108, 0.1);
}

.btn-primary,
.btn-secondary {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    grid-column: span 2;
}

.btn-primary {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 87, 108, 0.5);
}

.btn-random {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.3);
}

.btn-random:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 172, 254, 0.5);
}


.btn-primary:disabled {
    background: #dee2e6;
    cursor: not-allowed;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: #5a6268;
}

.btn-secondary:disabled {
    background: #dee2e6;
    cursor: not-allowed;
}

.output-section {
    padding: 2rem;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.output-header h2 {
    color: #495057;
}

.button-group {
    display: flex;
    gap: 0.5rem;
}

.button-group .btn-secondary {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.loading {
    text-align: center;
    padding: 3rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #f5576c;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.images-container {
    display: flex;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.image-preview {
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    padding: 1.5rem;
    border-radius: 12px;
    border: 2px solid #dee2e6;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s;
}

.image-preview:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.image-preview h3 {
    margin-bottom: 1rem;
    color: #495057;
}

.preview-box {
    background: white;
    border: 2px solid #dee2e6;
    border-radius: 8px;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.preview-box img {
    max-width: 100%;
    max-height: 500px;
    display: block;
}

.placeholder {
    color: #6c757d;
    font-style: italic;
}

.image-info {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: #6c757d;
}

.stats-section {
    padding: 2rem;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
}

.stats-section h3 {
    margin-bottom: 1rem;
    color: #495057;
}

.stats-grid {
    display: flex;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-item {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    border: 2px solid #dee2e6;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: #6c757d;
    margin-bottom: 0.5rem;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (max-width: 768px) {
    body {
        padding: 0;
    }

    header h1 {
        font-size: 2rem;
    }

    .controls {
        grid-template-columns: 1fr;
    }

    .btn-primary,
    .btn-secondary {
        grid-column: span 1;
    }

    .images-container {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* Control sections */
.control-section {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    border: 2px solid #dee2e6;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    margin-bottom: 1rem;
}

.control-section.collapsed {
    opacity: 0.8;
}

.section-title {
    font-size: 1rem;
    font-weight: 700;
    color: #495057;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #f093fb;
}

.control-row {
    display: flex;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.control-row:last-child {
    margin-bottom: 0;
}

.action-buttons {
    display: flex;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.full-width {
    width: 100%;
    margin-top: 0.5rem;
}