:root {
    --bg-dark: #1a1a1d;
    --panel-bg: #2c2c34;
    --border-color: #444;
    --text-primary: #f5f5f5;
    --text-secondary: #a9a9b3;
    --accent-primary: #6f42c1;
    --accent-hover: #835dcf;
    --accent-disabled: #5a5a66;
    --font-family: 'Poppins', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    font-weight: 600;
    color: var(--text-primary);
}

header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.studio-container {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.panel {
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
}

.controls-panel { flex: 1.2; }
.workspace-panel { flex: 2; position: relative; padding: 0; overflow: hidden;}
.actions-panel { flex: 1; }

/* --- Controls Panel Styling --- */
fieldset {
    border: 1px solid var(--border-color);
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
}

legend {
    padding: 0 10px;
    font-weight: 500;
    color: var(--text-secondary);
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.9rem;
    font-weight: 400;
}

input[type="url"],
input[type="number"],
textarea,
select {
    width: 100%;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 10px;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 1rem;
}

input[type="file"] {
    font-size: 0.9rem;
}

.seed-container {
    display: flex;
    gap: 10px;
}
#random-seed-btn {
    padding: 0 12px;
    background-color: var(--border-color);
    border: none;
    color: var(--text-primary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
}
#random-seed-btn:hover {
    background-color: #555;
}

.cta-button {
    width: 100%;
    padding: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    background-color: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
}

.cta-button:hover {
    background-color: var(--accent-hover);
}

.cta-button:disabled {
    background-color: var(--accent-disabled);
    cursor: not-allowed;
}

/* --- Workspace Panel Styling --- */
#image-comparison-container {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: 8px;
    display: none; /* Initially hidden */
}
.image-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}
#after-container {
    width: 50%; /* Initial split */
}
.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    /* This is the key for the slider to work */
    position: absolute;
    top: 0;
    left: 0;
}
#before-container img {
    width: 100%;
}
#after-container img {
    width: auto;
    max-width: none; /* Allows the image to be its full width inside the clipped container */
}
#comparison-slider {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    cursor: ew-resize;
    z-index: 10;
}
.image-label {
    position: absolute;
    bottom: 10px;
    background-color: rgba(0,0,0,0.6);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    pointer-events: none;
}
#before-container .image-label { left: 10px; }
#after-container .image-label { right: 10px; }
#workspace-placeholder {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    height: 100%;
    padding: 40px;
}

/* --- Actions Panel Styling --- */
.actions-panel h2 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 5px;
}
.action-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
}
.actions-panel button {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}
.actions-panel button:hover:not(:disabled) {
    background-color: var(--border-color);
    border-color: var(--text-secondary);
}
.actions-panel button:disabled {
    background-color: var(--panel-bg);
    color: var(--text-secondary);
    cursor: not-allowed;
}
.actions-panel hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 20px 0;
}
#metadata-display pre {
    background-color: var(--bg-dark);
    padding: 10px;
    border-radius: 4px;
    white-space: pre-wrap;
    word-break: break-all;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.api-note {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 20px;
    text-align: center;
}

/* --- Loader Animation --- */
.btn-loader {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* --- Responsive Design --- */
@media (max-width: 1200px) {
    .studio-container {
        flex-direction: column;
    }
}
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    .action-buttons {
        grid-template-columns: 1fr;
    }
}