:root {
    --bg-main: #1c223a;
    --bg-card: #252b48;
    --text-primary: #ffffff;
    --text-secondary: #a0a5ba;
    --accent-purple: #c299ff;
    --accent-green: #00e699;
    --btn-gradient: linear-gradient(90deg, #6366f1, #8b5cf6);
    --btn-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.main-wrapper {
    width: 100%;
    max-width: 900px;
}

.header {
    text-align: center;
    margin-bottom: 3rem;
}

.title {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent-purple);
    margin-bottom: 0.8rem;
    text-transform: uppercase;
    letter-spacing: -0.5px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 400;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background-color: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-green);
}

.visualizer {
    background-color: #2a3152;
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.image-pair {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    justify-content: center;
}

.image-column {
    flex: 1;
    max-width: 320px;
    text-align: center;
}

.image-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.image-container {
    width: 100%;
    aspect-ratio: 1/1;
    background-color: #3b4266;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.image-container:hover {
    background-color: #464d75;
    border-color: rgba(255, 255, 255, 0.1);
}

.placeholder {
    text-align: center;
}

.placeholder-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.placeholder p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.mode-toggle-group {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.mode-select-btn {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: none;
    background-color: #3b4266;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.mode-select-btn.active {
    background-color: var(--accent-purple);
    color: white;
}

.action-area {
    text-align: center;
}

.btn-action {
    background: var(--btn-gradient);
    border: none;
    padding: 1.2rem 3rem;
    border-radius: 12px;
    color: white;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--btn-shadow);
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
}

.btn-action:hover:not(:disabled) {
    transform: translateY(-2px);
    filter: brightness(1.1);
    box-shadow: 0 6px 24px rgba(99, 102, 241, 0.6);
}

.btn-action:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(0.5);
}

.model-info {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.green {
    color: var(--accent-green);
}

.hidden {
    display: none;
}

/* Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top: 3px solid var(--accent-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

@media (max-width: 600px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .image-pair {
        flex-direction: column;
        align-items: center;
    }
}