/* =====================================
   礼仪救星 - 现代化响应式设计
   支持完整的亮色/暗黑模式切换
   ===================================== */

/* ============ 主题色彩系统 ============ */
:root,
[data-theme="light"] {
    /* 原色系 */
    --primary-color: #136dec;
    --primary-light: #4a9eff;
    --primary-dark: #0f58c2;
    --secondary-color: #18b8e7;
    --accent-color: #ff6b6b;
    
    /* 背景色 */
    --bg-color: #f6f7f8;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f9fbfd;
    --bg-overlay: rgba(15, 23, 42, 0.08);
    
    /* 文字色 */
    --text-color: #0f172a;
    --text-secondary: #546277;
    --text-tertiary: #8a99b0;
    
    /* 边界和阴影 */
    --border-color: #d9e1ea;
    --border-light: #eef3f8;
    --shadow-sm: 0 2px 8px rgba(19, 109, 236, 0.08);
    --shadow-md: 0 4px 12px rgba(19, 109, 236, 0.12);
    --shadow-lg: 0 8px 20px rgba(19, 109, 236, 0.15);
    --shadow-xl: 0 10px 28px rgba(41, 72, 107, 0.15);
    
    /* 输入框 */
    --input-bg: #f9fbfd;
    --input-border: #d3dee9;
    --input-focus-color: #71a6f5;
    
    /* 状态色 */
    --success-color: #2e7d32;
    --success-bg: #e8f5e9;
    --success-border: #c8e6c9;
    --error-color: #b71c1c;
    --error-bg: #ffebee;
    --error-border: #ffcdd2;
    --warning-color: #f57f17;
    --warning-bg: #fff8e1;
    --warning-border: #ffe082;
}

/* ============ 暗黑模式 ============ */
[data-theme="dark"] {
    /* 原色系 */
    --primary-color: #4a9eff;
    --primary-light: #7ab8ff;
    --primary-dark: #2a6dd6;
    --secondary-color: #18d4ff;
    --accent-color: #ff8a8a;
    
    /* 背景色 */
    --bg-color: #0d1b2a;
    --bg-secondary: #1a2f47;
    --bg-tertiary: #172a40;
    --bg-overlay: rgba(232, 238, 247, 0.08);
    
    /* 文字色 */
    --text-color: #e8eef7;
    --text-secondary: #a0afc0;
    --text-tertiary: #738596;
    
    /* 边界和阴影 */
    --border-color: #2a3f54;
    --border-light: #1f3447;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 20px rgba(74, 158, 255, 0.15);
    --shadow-xl: 0 10px 28px rgba(0, 0, 0, 0.5);
    
    /* 输入框 */
    --input-bg: #172a40;
    --input-border: #354558;
    --input-focus-color: #5aabef;
    
    /* 状态色 */
    --success-color: #66bb6a;
    --success-bg: #1b5e20;
    --success-border: #2e7d32;
    --error-color: #ff8a8a;
    --error-bg: #5a1a1a;
    --error-border: #b71c1c;
    --warning-color: #ffd54f;
    --warning-bg: #6b5c00;
    --warning-border: #f57f17;
    --color-scheme: dark;
}

/* ============ 全局样式 ============ */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Manrope', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ============ App Shell 布局 ============ */
.app-body {
    background: radial-gradient(circle at 20% 0%, var(--bg-secondary) 0%, var(--bg-color) 42%, var(--bg-color) 100%);
}

.app-shell {
    max-width: 980px;
    min-height: 100vh;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--border-light);
    border-right: 1px solid var(--border-light);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-color) 100%);
}

/* ============ 顶部导航栏 ============ */
.app-header {
    /* always fixed at top like a native app bar */
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1000;
    padding: 14px 18px 12px;
    background: rgba(246, 249, 252, 0.88);
    border-bottom: 1px solid #dde5ee;
    backdrop-filter: blur(8px);
    transition: background-color 0.3s ease;
    display: flex;
    flex-direction: row;      /* always row, never column */
    flex-wrap: nowrap;        /* never let items wrap to next line */
    align-items: center;
    justify-content: space-between;
    min-width: 0;
}

/* ensure content does not hide behind fixed header */
.app-shell {
    padding-top: 60px; /* approximate header height */
}

[data-theme="dark"] .app-header {
    background: rgba(13, 27, 42, 0.88);
}

.app-brand {
    display: block;
    text-decoration: none;
    font-weight: 800;
    letter-spacing: 0.2px;
    color: #0e2f63;
    font-size: 1.2rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

[data-theme="dark"] .app-brand {
    color: #dbe8ff;
}

.app-subtitle {
    margin: 4px 0 0;
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

/* Header logo */
.app-header-logo-link {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-right: 10px;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.app-header-logo-link:hover {
    transform: scale(1.06);
    box-shadow: 0 2px 10px rgba(19, 109, 236, 0.22);
}

.app-header-logo {
    height: 36px;
    width: 36px;
    object-fit: contain;
    display: block;
}

.app-header-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex: 1;
    min-width: 0;       /* allow shrinking below content size */
    overflow: hidden;
}


/* ============ 主内容区 ============ */
.app-main {
    flex: 1;
    width: 100%;
    margin: 0;
    padding: 18px 16px 92px;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* ============ 底部导航栏 ============ */
.app-tabbar {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: min(980px, 100%);
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
    background: rgba(246, 247, 248, 0.96);
    border-top: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    z-index: 25;
    transition: background-color 0.3s ease;
}

[data-theme="dark"] .app-tabbar {
    background: rgba(13, 27, 42, 0.96);
}

.app-tab {
    text-decoration: none;
    color: var(--text-tertiary);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 8px 4px;
    font-size: 0.76rem;
    font-weight: 700;
    transition: all 0.2s ease;
    position: relative;
}

.app-tab:hover {
    color: var(--primary-color);
    transform: scale(1.05);
}

.app-tab.active {
    color: #0c3a82;
    background: linear-gradient(180deg, #d8e8ff, #e7f2ff);
}

[data-theme="dark"] .app-tab.active {
    color: #a3d8ff;
    background: linear-gradient(180deg, rgba(42, 109, 214, 0.3), rgba(74, 158, 255, 0.2));
}

.tab-icon {
    font-size: 1.1rem;
    margin-bottom: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tab-label {
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============ 英雄部分和标题 ============ */
.hero {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: 16px;
    margin-bottom: 30px;
}

.hero h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.scene-kicker,
.consultant-kicker,
.settings-kicker {
    text-transform: uppercase;
    letter-spacing: 1.2px;
    font-size: 0.68rem;
    color: var(--primary-color);
    font-weight: 800;
    margin: 0 0 8px;
}

.scene-hero h2,
.consultant-hero h2,
.settings-hero h2 {
    margin: 0 0 6px;
    font-size: 1.6rem;
    line-height: 1.25;
    color: var(--text-color);
}

.scene-hero p,
.consultant-hero p,
.settings-hero p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ============ 功能卡片网格 ============ */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.feature-card {
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--primary-color), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-card:hover::before {
    opacity: 0.1;
}

.feature-card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.feature-card h2 {
    font-size: 1.3rem;
    color: var(--text-color);
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

/* ============ 快速访问卡片 ============ */
.quick-access-section {
    margin-top: 40px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.quick-access-section h3 {
    color: var(--text-color);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.quick-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px;
}

.quick-link-btn {
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    text-align: center;
    transition: all 0.2s ease;
}

.quick-link-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============ 场景列表 ============ */
.scene-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.scene-card {
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.scene-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.scene-badge {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--primary-color);
    background: linear-gradient(135deg, rgba(19, 109, 236, 0.1), rgba(24, 184, 231, 0.1));
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.scene-body {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.scene-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.scene-copy h3 {
    margin: 0;
    font-size: 1rem;
    color: var(--text-color);
}

.scene-copy p {
    margin: 2px 0 0;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.scene-arrow {
    color: var(--text-tertiary);
    font-weight: 700;
}

/* ============ 按钮样式 ============ */
.btn {
    display: inline-block;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    font-size: 1rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    filter: brightness(1.1);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--primary-color);
    box-shadow: none;
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.primary-btn {
    width: 100%;
    padding: 14px;
    font-size: 1.05rem;
}

/* ============ 表单样式 ============ */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
}

.form-control,
textarea,
select,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"] {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--input-border);
    border-radius: 10px;
    background: var(--input-bg);
    color: var(--text-color);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus,
textarea:focus,
select:focus,
input:focus {
    border-color: var(--input-focus-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(19, 109, 236, 0.12);
    background: var(--bg-secondary);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] input:focus {
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.2);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

/* advanced sidebar drawer handle and responsive adjustments */
/* refined drawer handle style */
.sidebar-toggle-btn {
    left: 0;
    top: 132px;
    width: 26px;
    height: 72px;
    border-radius: 0 12px 12px 0;
    border: 1px solid #bfd1e6;
    border-left: none;
    background: rgba(255, 255, 255, 0.84);
    box-shadow: 0 6px 18px rgba(24, 52, 84, 0.16);
    opacity: 0.78;
    transition: opacity 0.2s ease, transform 0.2s ease;
    position: fixed;
    z-index: 41;
    display: grid;
    place-items: center;
    cursor: pointer;
}

.sidebar-toggle-btn .material-symbols-outlined {
    font-size: 16px;
    color: #5e7d9d;
}

.sidebar-toggle-btn:hover {
    opacity: 1;
    transform: translateX(2px);
}

:root[data-theme='dark'] .sidebar-toggle-btn {
    background: #16263a;
    color: #bdd6f0;
    border-color: #345175;
}
:root[data-theme='dark'] .sidebar-toggle-btn .material-symbols-outlined {
    color: #bdd6f0;
}

@media (min-width: 1180px) {
    .sidebar-toggle-btn,
    .chat-sidebar {
        left: calc((100vw - 980px) / 2 + 12px);
    }
}

@media (max-width: 900px) {
    .sidebar-toggle-btn {
        top: 108px;
        left: 0;
    }

    .chat-sidebar {
        left: 10px;
        top: 82px;
        bottom: 86px;
    }
}

.chat-sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.28);
    backdrop-filter: blur(2px);
    z-index: 39;
}

:root[data-theme='dark'] .chat-sidebar-overlay {
    background: rgba(5, 9, 14, 0.6);
}

/* ============ 聊天界面 ============ */
/* chat list & sidebar styling */
.chat-sidebar {
    position: fixed;
    left: 12px;
    top: 92px;
    bottom: 88px;
    width: min(300px, 82vw);
    padding: 14px;
    overflow-y: auto;
    z-index: 40;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    box-shadow: var(--shadow-xl);
    transform: translateX(calc(-100% - 16px));
    transition: transform 0.24s ease;
}

/* show sidebar when open */
.chat-sidebar.open {
    transform: translateX(0);
}

.chat-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-list-item {
    display: flex;
    gap: 8px;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 6px;
    background: var(--bg-tertiary);
}

.chat-list-item.active {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

.chat-title-btn {
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    flex: 1;
    color: var(--text-color);
    font-size: 0.95rem;
}

.chat-delete-btn {
    border: none;
    background: #fbe9e7;
    color: #b71c1c;
    border-radius: 6px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 0.8rem;
}

.chat-empty {
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}


.chat-list-item {
    display: flex;
    gap: 8px;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 6px;
    background: var(--bg-tertiary);
}

.chat-list-item.active {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

.chat-title-btn {
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    flex: 1;
    color: var(--text-color);
    font-size: 0.95rem;
}

.chat-delete-btn {
    border: none;
    background: #fbe9e7;
    color: #b71c1c;
    border-radius: 6px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 0.8rem;
}

.chat-empty {
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* end chat list */

/* ============ 咨询师页面布局 ============ */
.consultant-page {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.consultant-layout {
    display: flex;
    flex-direction: row;
    gap: 0;
    flex: 1;
    position: relative;
    min-height: calc(100vh - 240px);
}

.consultant-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0;
    overflow: hidden;
    min-height: calc(100vh - 152px);
    position: relative;
}

/* 对话信息头 */
.chat-conversation-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.chat-conv-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.chat-conv-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.chat-conv-time {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin: 0;
}

/* 聊天框容器和消息区域 */
.chat-box-wrap {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 14px 16px 176px;
    gap: 10px;
    background: var(--bg-color);
    min-height: 0;
}

.chat-box {
    flex: 1;
    border-radius: 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 14px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
    box-shadow: var(--shadow-sm);
    min-height: 0;
}

.chat-box::-webkit-scrollbar {
    width: 6px;
}

.chat-box::-webkit-scrollbar-track {
    background: transparent;
}

.chat-box::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.chat-box::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

.message {
    max-width: 88%;
    padding: 13px 16px;
    border-radius: 12px;
    line-height: 1.7;
    word-wrap: break-word;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.1px;
}

.message .message-content,
.message .message-content p,
.message .message-content li,
.message .message-content span {
    color: inherit;
}

.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4,
.message-content h5,
.message-content h6 {
    margin-top: 1.25em;
    margin-bottom: 0.6em;
    line-height: 1.4;
    font-weight: 600;
}
.message-content h1 { font-size: 1.4em; }
.message-content h2 { font-size: 1.3em; }
.message-content h3 { font-size: 1.15em; }
.message-content h4, .message-content h5, .message-content h6 { font-size: 1.05em; }

.message-content h1:first-child,
.message-content h2:first-child,
.message-content h3:first-child,
.message-content h4:first-child,
.message-content p:first-child {
    margin-top: 0;
}

.message-content p {
    margin-bottom: 0.8em;
    line-height: 1.6;
}
.message-content p:last-child,
.message-content ul:last-child,
.message-content ol:last-child {
    margin-bottom: 0;
}

.message-content ul,
.message-content ol {
    margin-top: 0.5em;
    margin-bottom: 0.8em;
    padding-left: 1.6em;
}

.message-content li {
    margin-bottom: 0.5em;
    padding-left: 0.2rem;
    line-height: 1.6;
}
.message-content li::marker {
    color: var(--text-secondary);
}
[data-theme="dark"] .ai-message .message-content li::marker {
    color: #8da4be;
}

.message-content blockquote {
    border-left: 4px solid var(--border-color);
    margin: 1em 0;
    padding: 0.5em 0.8em;
    color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.03);
    border-radius: 0 6px 6px 0;
}
[data-theme="dark"] .message-content blockquote {
    background: rgba(255, 255, 255, 0.04);
}

.user-message {
    align-self: flex-end;
    background: linear-gradient(135deg, #4f8fef 0%, #69b6ff 100%);
    color: #ffffff;
    border: 1px solid #6eaef7;
    border-bottom-right-radius: 4px;
    box-shadow: 0 3px 10px rgba(79, 143, 239, 0.24);
}

[data-theme="dark"] .user-message {
    background: #2458b8;
    color: #ffffff;
    border-color: #3b75df;
}

.ai-message {
    align-self: flex-start;
    background: #f7f9fd;
    color: #1f2d3d;
    border: 1px solid #d9e2ef;
    border-bottom-left-radius: 4px;
}

[data-theme="dark"] .ai-message {
    background: #1b2738;
    color: #f4f7ff;
    border-color: #314258;
}

.message pre,
.message code {
    background: rgba(15, 23, 42, 0.08);
    color: #1f2d3d;
}
[data-theme="dark"] .message pre,
[data-theme="dark"] .message code {
    background: rgba(255, 255, 255, 0.12);
    color: #f8fbff;
}

.chat-status {
    padding: 8px 12px;
    font-size: 0.85rem;
    color: var(--text-tertiary);
    text-align: left;
}

/* 输入框区域 - app式固定底栏 */
.input-area {
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    width: min(948px, calc(100vw - 32px));
    bottom: calc(76px + env(safe-area-inset-bottom));
    padding: 12px;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--input-border);
    border-radius: 16px;
    box-shadow: 0 -6px 24px rgba(24, 52, 84, 0.10), var(--shadow-sm);
    backdrop-filter: blur(10px);
    z-index: 8;
}

[data-theme="dark"] .input-area {
    background: rgba(26, 47, 71, 0.92);
    box-shadow: 0 -8px 28px rgba(0, 0, 0, 0.32), var(--shadow-sm);
}

.input-area textarea {
    min-height: 48px;
    max-height: 120px;
}

.message-action-row {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 10px;
}

.msg-delete-btn,
.msg-regenerate-btn {
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 7px 14px;
    font-size: 0.84rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
}

.msg-delete-btn {
    background: linear-gradient(135deg, #fff1ef 0%, #ffe2dc 100%);
    color: #c44536;
    border-color: #ffd0c7;
}

.msg-delete-btn:hover {
    transform: translateY(-1px);
    background: linear-gradient(135deg, #ffe6e0 0%, #ffd6cd 100%);
    box-shadow: 0 6px 16px rgba(196, 69, 54, 0.18);
}

.msg-regenerate-btn {
    background: linear-gradient(135deg, #e8f2ff 0%, #d8e9ff 100%);
    color: #1c5fd4;
    border-color: #bfd7ff;
}

.msg-regenerate-btn:hover {
    transform: translateY(-1px);
    background: linear-gradient(135deg, #deecff 0%, #cfe3ff 100%);
    box-shadow: 0 6px 16px rgba(28, 95, 212, 0.18);
}

.msg-delete-btn:active,
.msg-regenerate-btn:active {
    transform: translateY(0);
}

[data-theme="dark"] .msg-delete-btn {
    background: linear-gradient(135deg, rgba(196, 69, 54, 0.2) 0%, rgba(196, 69, 54, 0.28) 100%);
    color: #ffb7ab;
    border-color: rgba(255, 183, 171, 0.28);
}

[data-theme="dark"] .msg-regenerate-btn {
    background: linear-gradient(135deg, rgba(74, 158, 255, 0.18) 0%, rgba(24, 212, 255, 0.18) 100%);
    color: #c8e3ff;
    border-color: rgba(200, 227, 255, 0.24);
}

@media (max-width: 900px) {
    .input-area {
        width: calc(100vw - 20px);
        bottom: calc(72px + env(safe-area-inset-bottom));
    }

    .chat-box-wrap {
        padding-bottom: 170px;
    }
}

/* ============ 设置页面 ============ */
.settings-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.settings-form {
    padding: 16px;
}

.ai-settings {
    margin-top: 20px;
    padding: 18px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-tertiary);
}

.ai-settings h3 {
    margin-top: 0;
    color: var(--primary-color);
}

.ai-note {
    font-size: 0.95rem;
    color: var(--text-tertiary);
    margin-bottom: 12px;
    padding: 10px;
    background: var(--bg-color);
    border-left: 3px solid var(--primary-color);
    border-radius: 4px;
}

/* ============ 提示框和警告 ============ */
.alert {
    padding: 15px 16px;
    border-radius: 12px;
    margin-bottom: 20px;
    border-left: 4px solid;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert.success {
    background-color: var(--success-bg);
    color: var(--success-color);
    border-left-color: var(--success-color);
}

.alert.error {
    background-color: var(--error-bg);
    color: var(--error-color);
    border-left-color: var(--error-color);
}

.alert.warning {
    background-color: var(--warning-bg);
    color: var(--warning-color);
    border-left-color: var(--warning-color);
}

.info-box {
    margin-top: 20px;
    padding: 16px;
    background: var(--warning-bg);
    border-left: 4px solid var(--warning-color);
    border-radius: 8px;
}

/* ============ 排版 ============ */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-color);
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.3;
}

h1 { font-size: 2.2rem; }
h2 { font-size: 1.8rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.2rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 15px;
    color: var(--text-secondary);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ============ 响应式设计 ============ */
@media (max-width: 900px) {
    .app-tabbar {
        width: 100%;
        left: 0;
        transform: none;
    }

    .hero {
        padding: 30px 15px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .consultant-layout {
        min-height: calc(100vh - 240px);
    }
}

@media (max-width: 768px) {
    .app-main {
        padding: 14px 12px 92px;
    }

    .features {
        grid-template-columns: 1fr;
    }

    .feature-card {
        padding: 20px;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .scene-card {
        flex-wrap: wrap;
    }

    .settings-container {
        padding: 20px;
    }
}

@media (max-width: 640px) {
    .app-header {
        padding: 10px 12px;   /* 紧凑一点但保持单行 */
    }

    .app-brand {
        font-size: 1rem;
    }

    .app-main {
        padding: 12px 10px 92px;
    }

    .hero {
        border-radius: 12px;
        padding: 25px 15px;
        margin-bottom: 20px;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

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

    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.2rem; }

    .chat-box {
        height: 360px;
    }

    .message {
        max-width: 95%;
    }
}

/* ============ 可访问性 ============ */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ============ 打印样式 ============ */
@media print {
    .app-header,
    .app-tabbar {
        display: none;
    }

    .app-main {
        padding: 0;
    }
}