/* ============================================
   Reference Detail Page (Full Screen)
   ============================================ */
.reference-detail-page {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 1000;
    overflow-y: auto;
    display: none;
}

.reference-detail-page.show {
    display: block;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }

    to {
        transform: translateX(0);
    }
}

/* Detail Header */
.detail-header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.detail-back-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.detail-back-btn:hover {
    background: var(--glass-bg);
}

.detail-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
    text-align: center;
}

.detail-favorite-btn {
    background: var(--glass-bg);
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    font-size: 1.25rem;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.detail-favorite-btn:hover {
    transform: scale(1.1);
}

.detail-favorite-btn.active {
    background: var(--secondary);
}

/* Detail Content */
.detail-content {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-md);
    padding-bottom: var(--spacing-xl);
}

/* Preview Section */
.detail-preview-section {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.detail-preview-image {
    width: 100%;
    display: block;
    border-radius: var(--radius-lg);
}

/* Requirements Section */
.detail-requirements {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.requirements-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.requirements-text {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.example-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.detail-example-photo {
    width: 100%;
    max-width: 300px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    display: block;
    margin: 0 auto;
}

/* Upload Section */
.detail-upload-section {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
}

.detail-upload-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: transform var(--transition-fast);
}

.detail-upload-btn:hover {
    transform: scale(1.02);
}

.detail-upload-btn .upload-icon {
    font-size: 1.25rem;
}

.detail-file-input {
    display: none;
}

/* Photo Preview */
.detail-photo-preview {
    position: relative;
    margin-top: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.detail-preview-img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    display: block;
    border-radius: var(--radius-md);
}

.detail-remove-photo-btn {
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-xs);
    width: 32px;
    height: 32px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.detail-remove-photo-btn:hover {
    background: var(--error);
}

/* Generate Button */
.detail-generate-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    margin-top: var(--spacing-md);
    transition: all var(--transition-base);
}

.detail-generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(245, 87, 108, 0.4);
}

/* Loading State */
.detail-loading {
    text-align: center;
    padding: var(--spacing-xl);
    margin-top: var(--spacing-md);
}

.detail-loading .spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

.detail-loading p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

/* Progress bar  */
.detail-progress-bar {
    width: 100%;
    max-width: 300px;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin: var(--spacing-md) auto;
}

.detail-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 4px;
    width: 0%;
    transition: width 0.3s ease;
}

.detail-progress-text {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.25rem;
}