/* ========================================
   Gemini 图像生成器 - YingTu 风格深色主题
   ======================================== */

:root {
    /* 颜色系统 - YingTu 深紫调 */
    --bg-primary: #0e0d16;
    --bg-secondary: rgba(18, 17, 28, 0.85);
    --bg-tertiary: rgba(26, 25, 40, 0.9);
    --bg-card: rgba(22, 21, 35, 0.8);
    --bg-hover: rgba(35, 33, 55, 0.9);
    --bg-input: #0c0b14;

    --border-color: rgba(139, 92, 246, 0.15);
    --border-light: rgba(139, 92, 246, 0.25);
    --border-glow: rgba(139, 92, 246, 0.4);

    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;

    --accent-purple: #a855f7;
    --accent-purple-light: #c084fc;
    --accent-purple-dark: #9333ea;
    --accent-blue: #6366f1;
    --accent-gradient: linear-gradient(135deg, #a855f7 0%, #6366f1 100%);
    --accent-gradient-hover: linear-gradient(135deg, #c084fc 0%, #818cf8 100%);

    --success: #22c55e;
    --error: #ef4444;

    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;

    /* 动画 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;

    /* 阴影和发光 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(168, 85, 247, 0.35);
    --shadow-glow-strong: 0 0 30px rgba(168, 85, 247, 0.5);
    --shadow-neon: 0 0 15px rgba(168, 85, 247, 0.6), 0 0 30px rgba(168, 85, 247, 0.3);

    /* 毛玻璃效果 */
    --glass-blur: blur(12px);
    --glass-bg: rgba(14, 13, 22, 0.75);
}

/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 确保 hidden 属性始终生效 */
[hidden] {
    display: none !important;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
}

/* ========================================
   顶部横幅
   ======================================== */
/* ========================================
   顶部横幅
   ======================================== */
.top-banner {
    background: linear-gradient(90deg, #1a1a2e 0%, #16213e 50%, #1a1a2e 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 20px;
    position: relative;
    /* overflow: hidden; Removed to prevent clipping */
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 10px;
}

/* 默认隐藏移动端专用元素 */
.hamburger-btn,
.sidebar-overlay,
.sidebar-close-btn {
    display: none;
}

.top-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg,
            transparent 0%,
            rgba(139, 92, 246, 0.1) 25%,
            rgba(236, 72, 153, 0.1) 50%,
            rgba(139, 92, 246, 0.1) 75%,
            transparent 100%);
    animation: shimmer 3s ease-in-out infinite;
    pointer-events: none;
}

@keyframes shimmer {

    0%,
    100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

/* 动态发光边框动画 */
@keyframes borderGlow {

    0%,
    100% {
        border-color: rgba(168, 85, 247, 0.2);
        box-shadow: 0 0 15px rgba(168, 85, 247, 0.1), inset 0 0 20px rgba(168, 85, 247, 0.05);
    }

    50% {
        border-color: rgba(168, 85, 247, 0.4);
        box-shadow: 0 0 25px rgba(168, 85, 247, 0.25), inset 0 0 30px rgba(168, 85, 247, 0.1);
    }
}

@keyframes pulseGlow {

    0%,
    100% {
        box-shadow: 0 0 15px rgba(168, 85, 247, 0.3);
    }

    50% {
        box-shadow: 0 0 25px rgba(168, 85, 247, 0.5), 0 0 40px rgba(168, 85, 247, 0.2);
    }
}

.banner-content {
    /* position: absolute; Removed absolute positioning */
    /* left: 50%; */
    /* top: 50%; */
    /* transform: translate(-50%, -50%); */
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    z-index: 1;
    flex-wrap: wrap;
    grid-column: 2;
    /* Center in grid */
}

.banner-highlight {
    font-size: 1rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.banner-text {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
}

.banner-divider {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.banner-tag {
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.banner-tag.free {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    color: white;
}

.banner-tag.trial {
    background: linear-gradient(135deg, #8b5cf6 0%, #a855f7 100%);
    color: white;
}

.banner-price {
    font-size: 0.85rem;
    color: #fbbf24;
    font-weight: 600;
}

/* ========================================
   站点标题 - YingTu 风格
   ======================================== */
.site-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    z-index: 10;
    flex-shrink: 0;
}

.site-logo {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    object-fit: contain;
    filter: drop-shadow(0 0 8px rgba(168, 85, 247, 0.6));
}

.site-title-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.site-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.5px;
    line-height: 1.2;
}

.site-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 400;
    line-height: 1.2;
}

/* 用户菜单 */
.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    z-index: 2;
    flex-shrink: 0;
    justify-self: end;
    /* Align to right in grid */
    grid-column: 3;
}

.user-credits {
    font-size: 0.95rem;
    color: #fbbf24;
    font-weight: 600;
}

.user-name {
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.btn-admin {
    padding: 4px 10px;
    background: rgba(168, 85, 247, 0.2);
    color: var(--accent-purple-light);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-admin:hover {
    background: rgba(168, 85, 247, 0.3);
}

.btn-user-logout {
    padding: 4px 10px;
    background: rgba(239, 68, 68, 0.2);
    color: var(--error);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-user-logout:hover {
    background: rgba(239, 68, 68, 0.3);
}

/* 主容器 */
.app-container {
    display: flex;
    height: calc(100vh - 45px);
    width: 100vw;
}

/* ========================================
   侧边栏
   ======================================== */
.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px dashed var(--border-light);
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    margin-left: calc(-1 * var(--spacing-lg));
    margin-right: calc(-1 * var(--spacing-lg));
    padding-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-brand {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: 2px;
}

.logo-name {
    font-size: 1rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn-new-chat {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px dashed var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.btn-new-chat:hover {
    background: var(--bg-hover);
    border-color: var(--accent-purple);
    color: var(--text-primary);
}

.btn-new-chat .icon {
    font-size: 1.2rem;
    font-weight: 300;
}

/* 会话列表 */
.session-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.session-item {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background: transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.session-item:hover {
    background: var(--bg-hover);
}

.session-item.active {
    background: var(--bg-tertiary);
    border-left: 3px solid var(--accent-purple);
}

.session-title {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: var(--spacing-xs);
}

.session-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.session-delete {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    opacity: 0;
    transition: all var(--transition-fast);
}

.session-item:hover .session-delete {
    opacity: 1;
}

.session-delete:hover {
    background: var(--error);
    color: white;
}

/* ========================================
   主内容区
   ======================================== */
.main-content {
    flex: 1;
    display: flex;
    overflow: hidden;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    position: relative;
}

/* 控制面板 - YingTu 毛玻璃风格 */
.control-panel {
    width: 40%;
    min-width: 380px;
    max-width: 480px;
    max-height: calc(100vh - 45px - 48px);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: var(--spacing-lg);
    flex-shrink: 0;
    animation: borderGlow 4s ease-in-out infinite;
    position: relative;
}

.control-section {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.control-section:last-of-type {
    border-bottom: none;
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    font-size: 0.95rem;
}

.section-icon {
    font-size: 1rem;
}

.section-hint {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
}

/* 上传区域 */
.upload-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: flex-start;
}

.upload-area {
    position: relative;
    width: 80px;
    height: 80px;
    border: 2px dashed var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    overflow: hidden;
    flex-shrink: 0;
}

.upload-area:hover {
    border-color: var(--accent-purple);
    background: rgba(139, 92, 246, 0.05);
}

.upload-area.drag-over {
    border-color: var(--accent-purple);
    background: rgba(139, 92, 246, 0.1);
    transform: scale(1.02);
}

.upload-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
}

.upload-icon {
    font-size: 1.2rem;
    opacity: 0.6;
}

.upload-text {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.upload-hint {
    font-size: 0.6rem;
    color: var(--text-muted);
}

/* 多图预览列表 */
.preview-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.preview-item {
    position: relative;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

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

.preview-item .btn-remove {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 18px;
    height: 18px;
    border: none;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
    opacity: 0;
}

.preview-item:hover .btn-remove {
    opacity: 1;
}

.preview-item .btn-remove:hover {
    background: var(--error);
}

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

.hint-text.warning-hint {
    color: #f59e0b;
    background: rgba(245, 158, 11, 0.1);
    padding: 8px 12px;
    border-radius: var(--radius-md);
    border-left: 3px solid #f59e0b;
    margin-top: var(--spacing-md);
}

/* 提示词输入 - YingTu 样式 */
.prompt-input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    resize: vertical;
    min-height: 120px;
    transition: all var(--transition-normal);
}

.prompt-input:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15), var(--shadow-glow);
}

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

/* 选项组 */
.option-group {
    margin-bottom: var(--spacing-md);
}

.option-group:last-child {
    margin-bottom: 0;
}

.option-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.option-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.option-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.option-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
    color: var(--text-primary);
    transform: translateY(-1px);
}

/* YingTu 风格霓虹发光效果 */
.option-btn.active {
    background: var(--accent-gradient);
    border-color: transparent;
    color: white;
    font-weight: 500;
    box-shadow: var(--shadow-neon);
}

/* 分辨率按钮特殊样式 */
.resolution-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
}

.res-label {
    font-weight: 600;
}

.res-cost-tag {
    font-size: 0.75rem;
    padding: 2px 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 2px;
    color: #fbbf24;
    /* 金币颜色 */
    font-weight: 500;
}

.option-btn.active .res-cost-tag {
    background: rgba(255, 255, 255, 0.2);
    color: #fcd34d;
}

/* 生成按钮 - 增强发光效果 */
.generate-section {
    padding-top: var(--spacing-lg);
}

.btn-generate {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-neon);
    position: relative;
    overflow: hidden;
}

.btn-generate::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-gradient-hover);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.btn-generate:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-strong), 0 0 50px rgba(168, 85, 247, 0.3);
}

.btn-generate:hover::before {
    opacity: 1;
}

.btn-generate:active {
    transform: translateY(-1px);
}

.btn-generate:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-generate span {
    position: relative;
    z-index: 1;
}

.generate-icon {
    font-size: 1.1rem;
    position: relative;
    z-index: 1;
}

/* ========================================
   预览面板 - YingTu 毛玻璃风格
   ======================================== */
.preview-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 45px - 48px);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    animation: borderGlow 4s ease-in-out infinite;
    animation-delay: 2s;
}

.preview-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: rgba(14, 13, 22, 0.5);
}

.preview-tabs {
    display: flex;
    gap: var(--spacing-sm);
}

.preview-tab {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-normal);
}

.preview-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.preview-tab.active {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.tab-icon {
    font-size: 1rem;
}

/* 预览内容 */
.preview-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl);
    margin: auto;
}

.empty-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.2;
    filter: grayscale(0.5);
}

.empty-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.empty-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* 消息列表 */
.message-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
}

.message {
    display: flex;
    gap: var(--spacing-md);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.message.user .message-avatar {
    background: var(--accent-purple);
}

.message.assistant .message-avatar {
    background: linear-gradient(135deg, #22c55e, #10b981);
}

.message-content {
    flex: 1;
    min-width: 0;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.message.user .message-content {
    background: rgba(168, 85, 247, 0.1);
    border-color: rgba(168, 85, 247, 0.3);
}

.message.assistant .message-content {
    background: rgba(30, 20, 50, 0.4);
}

.message-text {
    font-size: 1.1rem;
    font-weight: 500;
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.message-image {
    max-width: 100%;
    max-height: 500px;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.message-image:hover {
    transform: scale(1.02);
}

.message-image-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
    opacity: 0.8;
}

.message-ref-images {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.message-ref-image {
    max-width: 80px;
    max-height: 80px;
    border-radius: var(--radius-md);
    opacity: 0.8;
    border: 1px solid var(--border-color);
}

/* ========================================
   加载状态
   ======================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.loading-overlay[hidden] {
    display: none;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-purple);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

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

.loading-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.loading-hint {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: var(--spacing-xs);
}

/* ========================================
   模态框
   ======================================== */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-modal[hidden] {
    display: none;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    cursor: pointer;
}

.modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.modal-content img {
    max-width: 85vw;
    max-height: 70vh;
    /* 限制图片最大高度，为按钮留出空间 */
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    object-fit: contain;
}

.modal-actions {
    width: 100%;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
}

.btn-download {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 0.9rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-close-modal {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.btn-close-modal:hover {
    background: var(--error);
}

/* ========================================
   滚动条样式
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1400px) {
    .control-panel {
        min-width: 340px;
        max-width: 420px;
    }
}

@media (max-width: 1200px) {
    .control-panel {
        min-width: 320px;
        max-width: 380px;
    }

    .main-content {
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }
}

@media (max-width: 900px) {
    .sidebar {
        width: 220px;
    }

    .control-panel {
        min-width: 280px;
        width: 45%;
    }

    .main-content {
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .preview-panel,
    .control-panel {
        border-radius: var(--radius-xl);
    }
}

@media (max-width: 768px) {
    body {
        overflow: auto;
    }

    /* 汉堡菜单按钮 */
    .hamburger-btn {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 4px;
        width: 36px;
        height: 36px;
        background: var(--bg-tertiary);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-sm);
        cursor: pointer;
        padding: 8px;
        flex-shrink: 0;
        transition: all var(--transition-fast);
    }

    .hamburger-btn:hover {
        background: var(--bg-hover);
        border-color: var(--accent-purple);
    }

    .hamburger-line {
        width: 18px;
        height: 2px;
        background: var(--text-primary);
        border-radius: 1px;
        transition: all var(--transition-fast);
    }

    /* 侧边栏遮罩 */
    .sidebar-overlay {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.6);
        backdrop-filter: blur(4px);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-normal), visibility var(--transition-normal);
    }

    .sidebar-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* 抽屉式侧边栏 */
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 280px;
        height: 100vh;
        max-height: none;
        background: #0e0d16;
        border-right: 1px solid var(--border-color);
        border-bottom: none;
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    /* 侧边栏头部顶栏 */
    .sidebar-header-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .sidebar-header-top .logo {
        flex: 1;
        margin-right: var(--spacing-sm);
        font-size: 1rem;
    }

    .sidebar-header-top .logo-icon {
        font-size: 1.2rem;
    }

    .sidebar-header-top .logo-brand {
        font-size: 0.7rem;
    }

    .sidebar-header-top .logo-name {
        font-size: 0.85rem;
        white-space: nowrap;
    }

    /* 关闭按钮 */
    .sidebar-close-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        background: var(--bg-tertiary);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-sm);
        color: var(--text-secondary);
        font-size: 1rem;
        cursor: pointer;
        flex-shrink: 0;
        transition: all var(--transition-fast);
    }

    .sidebar-close-btn:hover {
        background: var(--error);
        border-color: var(--error);
        color: white;
    }

    .app-container {
        flex-direction: column;
        height: auto;
        min-height: calc(100vh - 45px);
    }

    .main-content {
        flex-direction: column;
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
        overflow: visible;
        flex: none;
        height: auto;
    }

    .control-panel {
        width: 100%;
        min-width: unset;
        max-width: unset;
        max-height: none;
        height: auto;
        overflow: visible;
        border-radius: var(--radius-lg);
        flex-shrink: 0;
    }

    .preview-panel {
        flex: none;
        height: auto;
        min-height: 400px;
        border-radius: var(--radius-lg);
    }

    .preview-content {
        overflow: visible;
        height: auto;
        min-height: 350px;
    }

    /* 顶部栏调整 */
    .top-banner {
        gap: var(--spacing-sm);
    }

    .site-header {
        flex: 1;
        min-width: 0;
    }

    .banner-content {
        display: none;
    }
}

/* 桌面端侧边栏头部布局调整 */
@media (min-width: 769px) {
    .sidebar-header-top {
        display: contents;
    }
}

/* ========================================
   登录注册页面样式
   ======================================== */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    padding: var(--spacing-lg);
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    animation: borderGlow 4s ease-in-out infinite;
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-logo {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-md);
    filter: drop-shadow(0 0 12px rgba(168, 85, 247, 0.6));
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.auth-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input {
    padding: var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all var(--transition-normal);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15), var(--shadow-glow);
}

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

.form-error {
    color: var(--error);
    font-size: 0.85rem;
    min-height: 20px;
    text-align: center;
}

.btn-auth {
    padding: var(--spacing-md);
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-neon);
    margin-top: var(--spacing-sm);
}

.btn-auth:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-strong);
}

.btn-auth:active {
    transform: translateY(0);
}

.auth-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

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

.auth-footer a {
    color: var(--accent-purple-light);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.auth-footer a:hover {
    color: var(--accent-purple);
    text-decoration: underline;
}

/* ========================================
   管理员控制台样式
   ======================================== */
.admin-page {
    min-height: 100vh;
    background: var(--bg-primary);
    padding: var(--spacing-lg);
}

.admin-container {
    max-width: 1400px;
    margin: 0 auto;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.admin-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

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

.admin-actions {
    display: flex;
    gap: var(--spacing-md);
}

.btn-back,
.btn-logout {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-back {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-back:hover {
    background: var(--bg-hover);
    border-color: var(--accent-purple);
}

.btn-logout {
    background: var(--error);
    color: white;
    border: none;
}

.btn-logout:hover {
    opacity: 0.9;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-normal);
}



.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(168, 85, 247, 0.2);
    color: var(--accent-purple-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

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

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* 清理控制区 */
.cleanup-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.cleanup-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cleanup-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.btn-cleanup {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-warning {
    background: #f59e0b;
}

.btn-warning:hover {
    background: #d97706;
}

.btn-danger {
    background: var(--error);
}

.btn-danger:hover {
    background: #dc2626;
}

.date-cleanup-input {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.date-input {
    padding: var(--spacing-sm);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
}

/* 用户列表区域 */


.stat-icon {
    font-size: 2rem;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

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

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* 管理区块 */
.admin-section {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
}

/* 用户表格 */
.user-table-container {
    overflow-x: auto;
}

.user-table {
    width: 100%;
    border-collapse: collapse;
}

.user-table th,
.user-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.user-table th {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.user-table td {
    color: var(--text-primary);
    font-size: 0.9rem;
}

.user-table tbody tr:hover {
    background: var(--bg-hover);
}

.admin-row {
    background: rgba(168, 85, 247, 0.05);
}

.username {
    font-weight: 500;
}

.loading-cell,
.empty-cell {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-xl) !important;
}

/* 徽章 */
.badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-left: var(--spacing-xs);
}

.badge-admin {
    background: rgba(168, 85, 247, 0.2);
    color: var(--accent-purple-light);
}

.badge-user {
    background: rgba(99, 102, 241, 0.2);
    color: var(--accent-blue);
}

.badge-primary {
    background: rgba(34, 197, 94, 0.2);
    color: var(--success);
}

/* 操作按钮 */
.action-cell {
    white-space: nowrap;
}

.btn-action {
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    margin-right: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.btn-view {
    background: rgba(99, 102, 241, 0.2);
    color: var(--accent-blue);
}

.btn-view:hover {
    background: rgba(99, 102, 241, 0.3);
}

.btn-toggle {
    background: rgba(168, 85, 247, 0.2);
    color: var(--accent-purple-light);
}

.btn-toggle:hover {
    background: rgba(168, 85, 247, 0.3);
}

.btn-delete {
    background: rgba(239, 68, 68, 0.2);
    color: var(--error);
}

.btn-delete:hover {
    background: rgba(239, 68, 68, 0.3);
}

/* 模态框增强 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    max-width: 90vw;
    max-height: 85vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-large {
    width: 800px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

/* 会话卡片 */
.session-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.session-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-hover);
    border-bottom: 1px solid var(--border-color);
}

.session-title {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
}

.session-time {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.session-messages {
    padding: var(--spacing-md);
    max-height: 300px;
    overflow-y: auto;
}

.message {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.message.user {
    background: rgba(99, 102, 241, 0.1);
    border-left: 3px solid var(--accent-blue);
}

.message.assistant {
    background: rgba(168, 85, 247, 0.1);
    border-left: 3px solid var(--accent-purple);
}

.message-role {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 2px;
    text-transform: uppercase;
}

.message-content {
    font-size: 0.85rem;
    color: var(--text-primary);
    word-break: break-word;
}

.message-image {
    max-width: 200px;
    max-height: 150px;
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-xs);
}

.empty-message,
.error-message {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-xl);
}

.error-message {
    color: var(--error);
}

/* 响应式管理页面 */
@media (max-width: 768px) {
    .admin-header {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

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

    .user-table th:nth-child(4),
    .user-table td:nth-child(4),
    .user-table th:nth-child(5),
    .user-table td:nth-child(5) {
        display: none;
    }

    .modal-large {
        width: 95vw;
    }

    .btn-action {
        padding: 3px 6px;
        font-size: 0.7rem;
    }
}

/* ========================================
   认证模态框样式 (首页弹窗)
   ======================================== */
.auth-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: none;
    /* 默认隐藏，由模板逻辑控制显示 */
    align-items: center;
    justify-content: center;
}

.auth-modal-content {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    width: 100%;
    max-width: 400px;
    animation: borderGlow 4s ease-in-out infinite, slideUp 0.4s ease-out;
    box-shadow: var(--shadow-lg);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.btn-full {
    width: 100%;
}

/* ========================================
   New Chat UI Styles
   ======================================== */

.chat-message {
    display: flex;
    gap: 16px;
    max-width: 900px;
    margin-bottom: 24px;
}

.chat-message.user {
    flex-direction: row-reverse;
    align-self: flex-end;
    margin-left: auto;
    /* Align to right */
}

.chat-message.assistant {
    align-self: flex-start;
}

.chat-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    background: rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.chat-message.user .chat-avatar {
    background: var(--accent-purple);
}

.chat-message.assistant .chat-avatar {
    background: var(--accent-blue);
}

.chat-content-wrapper {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 100%;
}

.chat-bubble {
    padding: 14px 20px;
    border-radius: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 0.98rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.chat-message.user .chat-bubble {
    background: rgba(168, 85, 247, 0.15);
    border-color: rgba(168, 85, 247, 0.2);
    border-top-right-radius: 4px;
}

.chat-message.assistant .chat-bubble {
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.2);
    border-top-left-radius: 4px;
}

.chat-image {
    width: 100%;
    max-width: 512px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-top: 8px;
    cursor: pointer;
    transition: transform 0.2s;
    display: block;
}

.chat-image:hover {
    transform: scale(1.02);
}

.chat-image-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-style: italic;
}

.chat-ref-images {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
}

.chat-ref-image {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    opacity: 0.8;
}