/* 内页浅色主题（首页除外，首页仍用 home.css 深色蓝调） */

:root {
    --app-bg: #f4f7fb;
    --app-bg-soft: #eef3f9;
    --app-panel: #ffffff;
    --app-border: #e2e8f0;
    --app-text: #0f172a;
    --app-muted: #64748b;
    --app-accent: #1576e8;
}

html:has(.page-app),
body:has(.page-app),
.page-app {
    background: var(--app-bg) !important;
}

.page-app.layui-layout-admin {
    background: var(--app-bg);
    min-height: 100vh;
}

.page-app .layui-header {
    background: #ffffff !important;
    border-bottom: 1px solid var(--app-border);
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
    overflow: visible !important;
    z-index: 1200 !important;
}

.page-app .layui-body {
    background: var(--app-bg) !important;
    color: var(--app-text);
    z-index: 1 !important;
}

.page-app .layui-nav,
.page-app .layui-nav-child,
.page-app .layui-nav-child dd {
    background-color: transparent !important;
}

.page-app .layui-header .layui-nav .layui-nav-item > a,
.page-app .layui-logo,
.page-app .layui-logo .site-brand-name,
.page-app .layui-logo a {
    color: #1e3a5f !important;
}

.page-app .layui-header .layui-nav .layui-nav-item > a:hover,
.page-app .layui-header .layui-nav .layui-this > a {
    color: var(--app-accent) !important;
    background-color: rgba(21, 118, 232, 0.08) !important;
}

.page-app .layui-nav .layui-this:after {
    background-color: var(--app-accent) !important;
}

.page-app .layui-nav-child {
    background-color: #fff !important;
    border: 1px solid var(--app-border);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.page-app .layui-nav-child dd a {
    color: #334155 !important;
}

.page-app .layui-nav-child dd a:hover {
    background: #f1f5f9 !important;
    color: var(--app-accent) !important;
}

.page-app .layui-footer.site-footer {
    left: 0 !important;
    background: #ffffff !important;
    border-top: 1px solid var(--app-border) !important;
    color: var(--app-muted) !important;
}

.page-app .layui-footer.site-footer p {
    color: var(--app-muted) !important;
}

/* 关于页 */
.page-app .about-container {
    max-width: 760px;
    margin: 0 auto;
    padding: 20px 16px 40px;
}

.page-app .about-content {
    background: var(--app-panel);
    border: 1px solid var(--app-border);
    border-radius: 16px;
    padding: 32px 28px 36px;
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
    color: var(--app-text);
}

.page-app .about-content > h2 {
    color: #0f172a;
    margin: 0 0 20px;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.page-app .about-content .layui-text {
    color: #334155;
    font-size: 15px;
    line-height: 1.9;
    word-break: break-word;
    text-align: left;
}

.page-app .about-content .layui-text p {
    margin: 0 0 1.15em;
    text-align: left;
    text-indent: 0;
    color: #334155;
    line-height: 1.9;
}

.page-app .about-content .layui-text p:last-child {
    margin-bottom: 0;
}

/* 导语段：首行缩进 */
.page-app .about-content .layui-text p:not(:has(strong)) {
    text-indent: 2em;
}

.page-app .about-content .layui-text .about-section-title,
.page-app .about-content .layui-text strong.about-section-title {
    display: block;
    margin: 0.35em 0 0.65em;
    color: #0f172a;
    font-size: 1.12em;
    font-weight: 700;
    text-indent: 0;
    text-align: left;
}

.page-app .about-content .layui-text .about-item-title,
.page-app .about-content .layui-text strong.about-item-title {
    display: block;
    margin: 0 0 0.4em;
    color: #1e3a5f;
    font-size: 1.02em;
    font-weight: 600;
    text-indent: 0;
    text-align: left;
}

.page-app .about-content .layui-text strong,
.page-app .about-content .layui-text b {
    color: #0f172a;
    font-weight: 700;
}

.page-app .about-content .layui-text ul,
.page-app .about-content .layui-text ol {
    margin: 0.5em 0 1em;
    padding-left: 1.6em;
}

.page-app .about-content .layui-text li {
    margin: 0.35em 0;
    line-height: 1.8;
    color: #334155;
}

.page-app .about-content .layui-text a {
    color: #1576e8;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.page-app .about-content .layui-text h1,
.page-app .about-content .layui-text h2,
.page-app .about-content .layui-text h3,
.page-app .about-content .layui-text h4 {
    color: #0f172a;
    margin: 1.2em 0 0.5em;
    font-weight: 700;
    text-indent: 0;
}

@media (max-width: 640px) {
    .page-app .about-container {
        padding: 12px 10px 28px;
    }
    .page-app .about-content {
        padding: 22px 16px 28px;
        border-radius: 12px;
    }
    .page-app .about-content .layui-text p {
        text-indent: 1.5em;
    }
}

/* 对话页：浅色可读 */
.page-app .hbm-chat-shell {
    background: #fff;
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
    border: 1px solid var(--app-border);
    border-radius: 14px;
}

.page-app .hbm-chat-sidebar {
    background: linear-gradient(180deg, #f7f9fc 0%, #eef3f9 100%);
    border-right-color: var(--app-border);
}

.page-app .hbm-agent-selector h3,
.page-app .hbm-chat-history h3,
.page-app .hbm-chat-header h2 {
    color: #0f172a;
}

.page-app .hbm-chat-main {
    background: #fff;
}

.page-app .hbm-chat-header {
    background: #fbfdff;
    border-bottom-color: #eef2f7;
}

.page-app .hbm-chat-messages {
    background: #f8fafc;
}

.page-app .hbm-chat-input {
    background: #fff;
    border-top-color: #eef2f7;
}

.page-app .hbm-input-container textarea {
    background: #fff;
    border-color: #d7e3f4;
    color: #0f172a;
}

.page-app .hbm-input-container textarea::placeholder {
    color: #94a3b8;
}

.page-app .hbm-welcome {
    background: #fff;
    border-color: #e2e8f0;
    color: #475569;
}

.page-app .hbm-welcome h3 {
    color: #0f172a;
}

.page-app .message.user {
    background: linear-gradient(135deg, #1576e8, #1d4ed8);
    color: #fff;
}

.page-app .message.assistant {
    background: #fff;
    color: #202124;
    border-color: #e2e8f0;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.05);
}

.page-app .message.assistant .message-content,
.page-app .message.assistant .message-content p,
.page-app .message.assistant .message-content li,
.page-app .message.assistant .main-answer-content {
    color: #202124 !important;
}

.page-app .message.system {
    background: #e8f0fe;
    color: #1a73e8;
    border-color: #c2d7ff;
}

.page-app .hbm-history-item {
    background: #fff;
    border-color: #e2e8f0;
}

.page-app .hbm-history-item:hover,
.page-app .hbm-history-item.active {
    border-color: var(--app-accent);
}

.page-app .hbm-history-title {
    color: #1e293b;
}

.page-app .hbm-history-meta,
.page-app .hbm-history-empty,
.page-app .hbm-chat-info {
    color: #94a3b8;
}

.page-app .hbm-action-primary {
    background: #1576e8;
    color: #fff;
}

.page-app .hbm-action-warm {
    background: #fff4e8;
    color: #b45309;
    border: 1px solid #f3d2a8;
}

.page-app .hbm-login-tip {
    background: #e8f0fe;
    color: #1e3a5f;
}

.page-app .hbm-login-tip a {
    color: var(--app-accent);
}

.page-app .dify-references-container {
    background: #f8fafc;
    border-color: #e2e8f0;
}

.page-app .dify-reference-item {
    background: #fff;
}

.page-app .copy-btn {
    background: #f8fafc;
    border-color: #e2e8f0;
    color: #475569;
}

.page-app .hbm-history-delete:hover {
    background: #fef2f2;
    color: #dc2626;
}

/* 登录/注册/个人中心 */
.page-app .layui-card,
.page-app .layui-form,
.page-app .login-container,
.page-app .register-container,
.page-app .profile-container {
    color: var(--app-text);
}

.page-app .layui-card {
    background: var(--app-panel);
    border: 1px solid var(--app-border);
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}

.page-app .layui-card-header,
.page-app .layui-form-label,
.page-app h2,
.page-app h3 {
    color: #0f172a !important;
}

.page-app .layui-input,
.page-app .layui-textarea,
.page-app .layui-select {
    background: #fff !important;
    border-color: #d7e3f4 !important;
    color: var(--app-text) !important;
}

.page-app .login-container,
.page-app .register-container,
.page-app .profile-container {
    background: #fff !important;
    border: 1px solid var(--app-border);
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04) !important;
    color: var(--app-text);
}

.page-app .login-title,
.page-app .register-title,
.page-app .profile-title {
    color: #0f172a !important;
}

.page-app .form-group label {
    color: #475569 !important;
}

.page-app .form-group input {
    background: #fff !important;
    border-color: #d7e3f4 !important;
    color: var(--app-text) !important;
}

.page-app .mobile-nav-toggle {
    color: #1e3a5f;
}

.page-app .mobile-nav-toggle:hover {
    background-color: rgba(21, 118, 232, 0.08);
}