/* ===== 应用主页样式 ===== */
.app-main {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: var(--spacing-lg);
    padding: calc(80px + var(--spacing-lg)) var(--spacing-lg) var(--spacing-lg);
    max-width: 1600px;
    margin: 0 auto;
    min-height: 100vh;
}

/* ===== 控制面板 ===== */
.control-panel {
    position: sticky;
    top: calc(80px + var(--spacing-lg));
    height: fit-content;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.panel-header {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--glass-border);
}

.panel-header h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    margin: 0;
}

.panel-content {
    padding: var(--spacing-md);
    max-height: calc(100vh - 200px);
    overflow-y: auto;
}

.panel-content::-webkit-scrollbar {
    width: 6px;
}

.panel-content::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

.panel-content::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.panel-content::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.setting-group {
    margin-bottom: var(--spacing-lg);
}

.setting-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.setting-label input[type="checkbox"] {
    margin-right: var(--spacing-xs);
}

.input-select {
    width: 100%;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition);
}

.input-select:hover {
    border-color: var(--primary-color);
}

.input-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 152, 0, 0.1);
}

.hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

/* 宽高比选择器 */
.ratio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xs);
}

.ratio-btn {
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.ratio-btn:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.ratio-btn.active {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
}

/* 分辨率按钮 */
.resolution-buttons {
    display: flex;
    gap: var(--spacing-xs);
}

.resolution-btn {
    flex: 1;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.resolution-btn:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.resolution-btn.active {
    background: var(--accent-gradient);
    color: white;
}

/* 文件上传区域 */
.upload-area {
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-tertiary);
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(255, 152, 0, 0.05);
}

.upload-area i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.upload-area p {
    margin: var(--spacing-xs) 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.preview-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

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

.preview-remove {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 20px;
    height: 20px;
    background: rgba(0, 0, 0, 0.7);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

/* 高级设置 */
.advanced-settings {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--bg-tertiary);
}

.advanced-settings summary {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.advanced-settings summary:hover {
    color: var(--text-primary);
}

/* ===== 工作区 ===== */
.work-area {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* 提示词区域 */
.prompt-section {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.prompt-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.prompt-header h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    margin: 0;
}

.btn-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-icon:hover {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

.prompt-input {
    width: 100%;
    min-height: 150px;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: var(--transition);
}

.prompt-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 152, 0, 0.1);
}

.prompt-input::placeholder {
    color: var(--text-muted);
}

.prompt-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin: var(--spacing-md) 0;
}

.suggestion-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition);
}

.suggestion-tag:hover {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
}

.btn-generate {
    width: 100%;
    margin-top: var(--spacing-md);
    font-size: 1.125rem;
    padding: 1rem;
    justify-content: center;
}

.btn-generate:active {
    transform: scale(0.98);
}

/* 结果显示区 */
.result-section {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.result-header h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    margin: 0;
}

.result-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.result-display {
    position: relative;
    width: 100%;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: block;
    padding: var(--spacing-md);
}

.result-placeholder {
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    text-align: center;
    color: var(--text-muted);
}

.result-placeholder i {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

.result-placeholder p {
    margin: var(--spacing-xs) 0;
}

.result-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
}

/* 加载状态 */
.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(248, 250, 252, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    z-index: 10;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--bg-tertiary);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    margin-top: var(--spacing-lg);
    font-size: 1.25rem;
    font-weight: 600;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.loading-hint {
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* 历史记录 */
.history-section {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.history-header h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.125rem;
    margin: 0;
}

.btn-text {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.875rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition);
}

.btn-text:hover {
    color: var(--error-color);
}

.history-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.history-placeholder {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
}

.history-placeholder i {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    opacity: 0.3;
}

.history-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.history-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.history-item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent 60%);
    opacity: 0;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--spacing-xs);
}

.history-item:hover .history-item-overlay {
    opacity: 1;
}

.history-item-info {
    font-size: 0.75rem;
    color: white;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 4px;
}

.history-date {
    font-weight: 600;
    font-size: 0.7rem;
    opacity: 0.9;
}

.history-model {
    font-size: 0.65rem;
    opacity: 0.7;
    padding: 2px 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    display: inline-block;
    width: fit-content;
}

.history-prompt {
    font-size: 0.7rem;
    opacity: 0.8;
    line-height: 1.3;
    margin-top: 2px;
}

.history-delete-btn {
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-xs);
    width: 28px;
    height: 28px;
    background: rgba(239, 68, 68, 0.9);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    transition: var(--transition);
    opacity: 0;
}

.history-item:hover .history-delete-btn {
    opacity: 1;
}

.history-delete-btn:hover {
    background: rgba(239, 68, 68, 1);
    transform: scale(1.1);
}

/* Toast 通知 */
.toast-container {
    position: fixed;
    top: calc(80px + var(--spacing-md));
    right: var(--spacing-md);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.toast {
    min-width: 300px;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.toast-success {
    border-left: 4px solid var(--success-color);
}

.toast-error {
    border-left: 4px solid var(--error-color);
}

.toast-info {
    border-left: 4px solid var(--accent-color);
}

.toast i {
    font-size: 1.25rem;
}

.toast-success i {
    color: var(--success-color);
}

.toast-error i {
    color: var(--error-color);
}

.toast-info i {
    color: var(--accent-color);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .app-main {
        grid-template-columns: 1fr;
    }

    .control-panel {
        position: static;
    }
}

@media (max-width: 768px) {
    .app-main {
        padding: calc(80px + var(--spacing-sm)) var(--spacing-sm) var(--spacing-sm);
    }

    .ratio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .history-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}

/* ===== 积分信息面板 ===== */
.credits-info-panel {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(155, 77, 202, 0.1));
    border-radius: 16px;
    border: 2px solid rgba(255, 107, 53, 0.2);
}

.credits-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.credits-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.credits-label i {
    color: var(--primary-color);
}

.credits-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
}

.credits-cost {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.5);
    border-radius: 8px;
    margin-bottom: var(--spacing-sm);
}

.cost-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.cost-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.cost-value i {
    color: #FFD700;
}

.credits-info-panel .btn {
    width: 100%;
    justify-content: center;
}