:root {
    --bg-color: #1a1a2e;
    --primary-text: #e0e0e0;
    --secondary-text: #b3b3b3;
    --accent-color: #ff4081;
    --container-bg: rgba(23, 23, 43, 0.85);
    --border-color: rgba(255, 64, 129, 0.5);
    --input-bg: #2c2c54;
}

body {
    margin: 0;
    font-family: 'Noto Serif JP', serif;
    background-color: var(--bg-color);
    background-image: url('background.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--primary-text);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 2rem;
    box-sizing: border-box;
}

#container {
    width: 100%;
    max-width: 900px;
    background: var(--container-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    text-align: center;
}

header {
    margin-bottom: 2rem;
}

.logo {
    width: 100px;
    height: 100px;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    color: var(--accent-color);
    text-shadow: 0 0 10px var(--accent-color);
    margin: 0;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--secondary-text);
    max-width: 600px;
    margin: 0.5rem auto 1rem;
}

#input-area {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    margin-bottom: 0.5rem;
}

#mode-selection {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
    color: var(--secondary-text);
}

#image-option {
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
}

#image-option .file-label {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    color: var(--secondary-text);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

#image-option .file-label:hover {
    border-color: var(--accent-color);
    color: var(--primary-text);
}

#image-option input[type="file"] {
    font-size: 0.8rem;
    max-width: 220px;
}

#mode-selection label {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#mode-selection input[type="radio"] {
    appearance: none;
    width: 1.15em;
    height: 1.15em;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    transition: all 0.2s;
    position: relative;
}

#mode-selection input[type="radio"]:checked {
    border-color: var(--accent-color);
}

#mode-selection input[type="radio"]:checked::before {
    content: '';
    display: block;
    width: 0.65em;
    height: 0.65em;
    border-radius: 50%;
    background-color: var(--accent-color);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#concept-input {
    width: 100%;
    max-width: 400px;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 50px;
    background-color: var(--input-bg);
    color: var(--primary-text);
    font-family: 'Noto Serif JP', serif;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

#concept-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-color);
}

#generate-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 50px;
    background-color: var(--accent-color);
    color: white;
    font-family: 'Noto Serif JP', serif;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

#generate-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px var(--accent-color);
}

#toggle-options-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--secondary-text);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

#toggle-options-btn:hover {
    color: var(--primary-text);
    border-color: var(--accent-color);
}

#optional-prompts {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
    text-align: left;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-out, opacity 0.5s ease-out;
    opacity: 0;
}

#optional-prompts.visible {
    max-height: 1000px; /* Large enough to not clip content */
    opacity: 1;
}

.prompt-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.prompt-group.full-width {
    grid-column: 1 / -1;
}

.prompt-group label {
    font-weight: 700;
    color: var(--secondary-text);
    font-size: 0.9rem;
    margin-left: 0.5rem;
}

#optional-prompts input,
#optional-prompts textarea {
    width: 100%;
    padding: 0.7rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background-color: var(--input-bg);
    color: var(--primary-text);
    font-family: 'Noto Serif JP', serif;
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

#optional-prompts input:focus,
#optional-prompts textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 8px var(--accent-color);
}

#optional-prompts textarea {
    resize: vertical;
}

.hidden {
    display: none !important;
}

#loading {
    margin: 2rem 0;
    font-size: 1.2rem;
    color: var(--secondary-text);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

#result-container {
    display: flex;
    margin-top: 2rem;
    gap: 2rem;
    text-align: left;
    align-items: flex-start;
}

#image-container {
    flex: 0 0 300px; /* Don't grow, don't shrink, base width 300px */
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#character-image {
    width: 100%;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.4);
}

#save-btn {
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: 50px;
    background-color: var(--accent-color);
    color: white;
    font-family: 'Noto Serif JP', serif;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

#save-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 0 15px var(--accent-color);
}

#save-btn:disabled {
    background-color: #555;
    cursor: not-allowed;
}

#character-info {
    flex: 1;
    line-height: 1.7;
}

#character-info h2 {
    color: var(--accent-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

#character-info h3 {
    color: var(--primary-text);
    margin-top: 1.5rem;
}

#character-info ul {
    list-style: none;
    padding-left: 0;
}

#character-info li {
    background: var(--input-bg);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    margin-bottom: 0.5rem;
    border-left: 3px solid var(--accent-color);
}

#error-message {
    margin-top: 2rem;
    background-color: rgba(255, 0, 0, 0.2);
    color: #ffcccc;
    padding: 1rem;
    border-radius: 10px;
    border: 1px solid #ff4d4d;
}

#view-archive-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--secondary-text);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Noto Serif JP', serif;
    font-size: 0.9rem;
}

#view-archive-btn:hover:not(:disabled) {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

#view-archive-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* --- Archive Modal --- */
#archive-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

#archive-container {
    background: var(--container-bg);
    width: 90%;
    max-width: 1200px;
    height: 90vh;
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 0 30px rgba(0,0,0,0.6);
    position: relative;
    display: flex;
    flex-direction: column;
}

#close-archive-btn {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: var(--secondary-text);
    font-size: 2.5rem;
    cursor: pointer;
    line-height: 1;
}

#close-archive-btn:hover {
    color: var(--accent-color);
}

#archive-container h2 {
    text-align: center;
    color: var(--accent-color);
    margin-top: 0;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

#archive-content {
    display: flex;
    gap: 2rem;
    flex: 1;
    overflow: hidden;
}

#archive-list-container {
    flex: 0 0 300px;
    overflow-y: auto;
    padding-right: 1rem;
    border-right: 1px solid var(--border-color);
}

#archive-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

#archive-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    border: 1px solid transparent;
}

#archive-list li:hover {
    background-color: var(--input-bg);
}

#archive-list li.active {
    background-color: var(--input-bg);
    border-color: var(--accent-color);
}

#archive-list li.empty-archive {
    color: var(--secondary-text);
    justify-content: center;
    cursor: default;
}

.archive-thumbnail {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: 5px;
}

#archive-detail {
    flex: 1;
    overflow-y: auto;
    text-align: left;
    line-height: 1.7;
    display: flex;
    flex-direction: column;
    position: relative;
    padding-top: 3.5rem; /* Space for buttons */
}

.archive-actions {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    gap: 0.75rem;
    padding: 0.5rem;
    z-index: 10;
}

.archive-edit-btn,
.archive-delete-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: var(--input-bg);
    color: var(--secondary-text);
    font-family: 'Noto Serif JP', serif;
    cursor: pointer;
    transition: all 0.2s ease;
}

.archive-edit-btn:hover {
    color: #40c4ff; /* Light blue */
    border-color: #40c4ff;
    box-shadow: 0 0 8px #40c4ff;
}

.archive-delete-btn:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
    box-shadow: 0 0 8px var(--accent-color);
}

#archive-detail .placeholder {
    margin: auto;
    color: var(--secondary-text);
    font-size: 1.2rem;
    text-align: center;
}

#archive-detail #archive-image-container {
    width: 250px;
    float: left;
    margin-right: 2rem;
    margin-bottom: 1rem;
}
#archive-detail #archive-image-container img {
    width: 100%;
    border-radius: 10px;
    border: 2px solid var(--border-color);
}

#archive-detail #archive-info-container h3 {
     color: var(--primary-text);
     margin-top: 1.5rem;
}

@media (max-width: 1024px) {
    #archive-content {
        flex-direction: column;
    }
    #archive-list-container {
        flex: 0 0 200px; /* Smaller height for list on tablets */
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-right: 0;
        padding-bottom: 1rem;
        margin-bottom: 1rem;
    }
}

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }
    #container {
        padding: 1.5rem;
    }
    h1 {
        font-size: 2rem;
    }
    #input-area {
        flex-direction: column;
    }
    #optional-prompts {
        grid-template-columns: 1fr;
    }
    #result-container {
        flex-direction: column;
        align-items: center;
    }
    #image-container {
        width: 100%;
        max-width: 300px;
        margin-bottom: 1.5rem;
    }
    #archive-detail #archive-image-container {
        float: none;
        width: 80%;
        max-width: 250px;
        margin: 0 auto 1.5rem;
    }
}