/**
 * ============================================
 * layout.css - 布局样式
 * ============================================
 * 
 * 内容：
 * - 页面容器（.login-page, .chat-page, .voice-call-page）
 * - 侧边栏（.sidebar）
 * - 头部/底部
 * - 网格布局
 * - 动态背景
 */

/* ============================================
   动态背景 - 简约优雅
   ============================================ */
.dynamic-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(circle 50vmax at 30% 20%, rgba(232,150,91,0.15) 0%, transparent 60%),
        radial-gradient(circle 40vmax at 70% 80%, rgba(232,150,91,0.2) 0%, transparent 50%),
        var(--color-bg);
    animation: bgFlow 15s ease-in-out infinite;
}
@keyframes bgFlow {
    0%,100% { opacity: 0.8; transform: scale(1); }
    33% { opacity: 1; transform: scale(1.03); }
    66% { opacity: 0.7; transform: scale(0.98); }
}

.ambient-glow {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 60% 40% at 20% 30%, rgba(196, 168, 130, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 40% 30% at 80% 70%, rgba(196, 168, 130, 0.04) 0%, transparent 40%);
    animation: ambientPulse 10s ease-in-out infinite;
}

.light-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    mix-blend-mode: soft-light;
}

.orb-1 { width: 500px; height: 500px; background: radial-gradient(circle, rgba(196,168,130,0.08) 0%, transparent 70%); top: -10%; left: -5%; animation: orbFloat1 25s ease-in-out infinite; }
.orb-2 { width: 400px; height: 400px; background: radial-gradient(circle, rgba(196,168,130,0.06) 0%, transparent 70%); bottom: -5%; right: -5%; animation: orbFloat2 22s ease-in-out infinite; }

.noise-texture {
    position: absolute;
    inset: 0;
    opacity: 0.008;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* 暗黑模式背景 */
[data-theme="dark"] .dynamic-bg .ambient-glow {
    background:
        radial-gradient(ellipse 60% 40% at 20% 30%, rgba(196, 168, 130, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse 40% 30% at 80% 70%, rgba(196, 168, 130, 0.02) 0%, transparent 40%);
}

[data-theme="dark"] .light-orb { opacity: 0.15; }
[data-theme="dark"] .noise-texture { opacity: 0.02; }

/* ============================================
   登录页面布局
   ============================================ */
.login-page {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    perspective: 1200px;
    transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

.login-page.hiding {
    opacity: 0;
    transform: scale(0.95);
}

.login-page.hidden {
    display: none;
}

.login-content {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 1100px;
    padding: 40px;
    min-height: 100dvh;
    transition: all var(--duration-slow) var(--ease-out);
}

.hero-section {
    text-align: center;
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: all var(--duration-slow) var(--ease-out);
    transform-style: preserve-3d;
}

.hero-section.shifted { 
    /* 保持居中，不需要移动 */
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 56px;
    opacity: 0;
    transform: translateY(20px);
    animation: logoReveal 1s var(--ease-out) 0.2s forwards;
}

.logo-mark {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(196, 168, 130, 0.25);
}

.logo-mark img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transform: scale(1.7);
}

.logo-text {
    font-family: 'Playfair Display', var(--font-serif);
    font-size: 1.75rem;
    font-weight: 500;
    font-style: italic;
    letter-spacing: 0.06em;
    color: var(--color-text);
}

.brand-headline {
    font-family: var(--font-serif);
    font-size: clamp(2.2rem, 5.5vw, 3.2rem);
    font-weight: 200;
    line-height: 1.35;
    letter-spacing: 0.08em;
    color: var(--color-text-secondary);
    margin-bottom: 28px;
    opacity: 0;
    transform: translateY(30px);
    animation: textReveal 1s var(--ease-out) 0.4s forwards;
}

.brand-headline .highlight {
    display: block;
    margin-top: 6px;
    color: var(--color-primary);
    font-weight: 300;
    font-size: 1.1em;
    letter-spacing: 0.1em;
}

.brand-subtitle {
    font-family: var(--font-sans);
    font-size: clamp(0.85rem, 1.5vw, 0.95rem);
    font-weight: 300;
    line-height: 2.2;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: 52px;
    max-width: 320px;
    opacity: 0;
    transform: translateY(30px);
    animation: textReveal 1s var(--ease-out) 0.6s forwards;
}

/* 登录表单区域 */
.login-form-section {
    flex: 0 0 auto;
    width: 0;
    max-width: 90vw;
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out), width 0.5s var(--ease-out), margin 0.5s var(--ease-out);
    pointer-events: none;
    margin-left: 0;
}

.login-form-section.visible {
    width: 400px;
    margin-left: 60px;
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

/* ============================================
   对话页面布局
   ============================================ */
.chat-page {
    display: none;
    flex-direction: column;
    height: 100vh;
    position: relative;
    z-index: 1;
    background: transparent;
    opacity: 0;
    transform: scale(1.02);
    transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

.chat-page.active {
    display: flex;
    opacity: 1;
    transform: scale(1);
}

/* 对话页面入场动画序列 */
.chat-page.active .chat-header {
    animation: slideDown 0.5s var(--ease-out) 0.1s both;
}

.chat-page.active .sessions-sidebar {
    animation: slideRight 0.5s var(--ease-out) 0.15s both;
}

/* 移动端：禁用侧边栏入场动画，确保默认收起 */
@media (max-width: 1024px) {
    .chat-page.active .sessions-sidebar {
        animation: none !important;
        transform: translateX(-100%) !important;
    }
}

.chat-page.active .chat-messages {
    animation: fadeInUp 0.5s var(--ease-out) 0.2s both;
}

.chat-page.active .chat-input-area {
    animation: slideUp 0.5s var(--ease-out) 0.25s both;
}

[data-theme="dark"] .chat-page {
    background: transparent;
}

/* ============================================
   顶部导航 - 毛玻璃效果
   ============================================ */
.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 20px;
    background: transparent;
    border-bottom: none;
    flex-shrink: 0;
    position: relative;
    z-index: 100;
}

[data-theme="dark"] .chat-header {
    background: transparent;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    flex: 1;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.header-logo-mark {
    width: 36px;
    height: 36px;
    background: linear-gradient(145deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    box-shadow: 
        0 2px 6px rgba(0, 0, 0, 0.06),
        0 1px 2px rgba(0, 0, 0, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
    flex-shrink: 0;
    overflow: hidden;
    border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.header-logo-mark img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.header-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'Playfair Display', var(--font-serif);
    font-size: 1.25rem;
    font-weight: 500;
    font-style: italic;
    letter-spacing: 0.04em;
    color: var(--color-text);
    white-space: nowrap;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

/* ============================================
   聊天布局 - DeepSeek 风格
   ============================================ */

/* ============================================
   桌面端：侧边栏推挤平移效果（类似 DeepSeek）
   侧边栏展开 → 消息窗口向右平移
   侧边栏收起 → 消息窗口向左平移
   ============================================ */
@media (min-width: 1025px) {
    .chat-page {
        flex-direction: row !important;
    }

    /* ---- 聊天头部 ---- */
    .chat-header {
        position: fixed;
        top: 0;
        right: 0;
        left: 280px;
        z-index: 100;
        transition: left 0.35s var(--ease-spring);
    }

    /* ---- 聊天主内容 ---- */
    .chat-main {
        margin-left: 280px;
        margin-top: 50px;
        transition: margin-left 0.35s var(--ease-spring);
    }

    /* ---- 侧边栏 ---- */
    .sessions-sidebar {
        transform: translateX(0);
        transition: transform 0.35s var(--ease-spring);
        will-change: transform;
    }

    /* ============================================
       侧边栏收起状态：全部向左平移复位
       ============================================ */
    .chat-page.sidebar-closed .chat-header {
        left: 0;
    }

    .chat-page.sidebar-closed .chat-main {
        margin-left: 0;
    }

    .chat-page.sidebar-closed .sessions-sidebar {
        transform: translateX(-100%) !important;
        animation: none !important;
    }

    /* ---- 按钮显示控制 ---- */
    /* 展开状态：侧边栏内显示关闭按钮，header 隐藏 */
    .chat-page:not(.sidebar-closed) .chat-header .btn-menu {
        display: none !important;
    }

    .chat-page:not(.sidebar-closed) .sessions-sidebar .btn-menu {
        display: flex !important;
    }

    /* 收起状态：header 显示展开按钮，侧边栏内隐藏 */
    .chat-page.sidebar-closed .chat-header .btn-menu {
        display: flex !important;
    }

    .chat-page.sidebar-closed .sessions-sidebar .btn-menu {
        display: none !important;
    }
}

/* ============================================
   侧边栏 - 公共基础样式
   ============================================ */
.sessions-sidebar {
    width: 280px;
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    background: rgba(251, 247, 242, 0.55);
    backdrop-filter: blur(40px) saturate(180%);
    -webkit-backdrop-filter: blur(40px) saturate(180%);
    border-right: 1px solid var(--color-separator);
    display: flex;
    flex-direction: column;
    z-index: 200;
    box-shadow: none;
}

[data-theme="dark"] .sessions-sidebar {
    background: rgba(28, 20, 16, 0.78);
    border-right: 1px solid rgba(255,255,255,0.06);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    flex-shrink: 0;
}

[data-theme="dark"] .sidebar-header {
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.sidebar-title {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.sessions-list {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

/* 侧边栏新建对话按钮 */
.btn-new-chat-sidebar {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    margin-bottom: 12px;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--duration-fast);
}

.btn-new-chat-sidebar:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-subtle);
    color: var(--color-primary);
}

.btn-new-chat-sidebar:active { transform: scale(0.98); }

.sessions-divider {
    height: 1px;
    background: var(--color-border);
    margin: 0 4px 12px;
}

.sessions-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--color-text-tertiary);
    font-size: 0.85rem;
}

.session-item {
    padding: 14px 16px;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--duration-fast);
    margin-bottom: 4px;
    border-left: 3px solid transparent;
}

.session-item:hover { background: rgba(0,0,0,0.03); }
.session-item.active { background: rgba(184, 149, 110, 0.1); border-left-color: var(--color-primary); }

[data-theme="dark"] .session-item:hover { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .session-item.active { background: rgba(184, 149, 110, 0.12); border-left-color: var(--color-primary); }

.session-preview {
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

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

/* ============================================
   聊天主区域
   ============================================ */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: visible;
    min-width: 0;
}

/* ============================================
   输入区域布局
   ============================================ */
.chat-input-area {
    padding: 16px 20px 20px;
    background: transparent;
    flex-shrink: 0;
}

[data-theme="dark"] .chat-input-area {
    background: transparent;
}

.input-container {
    display: flex;
    gap: 10px;
    align-items: center;
    background: white;
    border-radius: var(--radius-lg);
    padding: 10px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    border: 0.5px solid rgba(0,0,0,0.06);
    position: relative;
}

.btn-plus { align-self: center; }
.btn-send { align-self: flex-end; }

.input-container:focus-within { border-color: var(--color-separator-strong); }

[data-theme="dark"] .input-container {
    background: var(--surface-color);
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
    border: 0.5px solid rgba(255,255,255,0.06);
}

[data-theme="dark"] .input-container:focus-within {
    border-color: var(--color-separator-strong);
}

.message-input {
    flex: 1;
    border: none;
    padding: 10px 12px;
    font-size: 1rem;
    resize: none;
    max-height: 120px;
    min-height: 24px;
    background: transparent;
    line-height: 1.5;
}

.message-input:focus { outline: none; }
.message-input::placeholder { color: var(--color-text-tertiary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

[data-theme="dark"] .message-input {
    color: var(--color-text);
    background: transparent;
}

[data-theme="dark"] .message-input::placeholder { color: var(--color-text-tertiary); }

/* ============================================
   输入框 ➕ 按钮与弹出面板（Apple 高级感）
   ============================================ */
.btn-plus {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s var(--ease-spring);
    box-shadow: inset 0 0 0 1px var(--color-border);
    touch-action: manipulation;
}

.btn-plus:hover {
    background: var(--color-primary-subtle);
    color: var(--color-primary);
    box-shadow: inset 0 0 0 1px var(--color-primary-light);
}

.btn-plus:active { transform: scale(0.92); }

.btn-plus svg {
    transition: transform 0.4s var(--ease-spring);
}

.btn-plus.open {
    background: var(--color-primary);
    color: white;
    box-shadow: inset 0 0 0 1px var(--color-primary);
}

.btn-plus.open svg { transform: rotate(135deg); }

/* 弹出面板 - Apple 风格毛玻璃 */
.plus-panel {
    position: absolute;
    bottom: calc(100% + 12px);
    left: 0;
    display: flex;
    gap: 8px;
    padding: 12px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(12px) scale(0.92);
    transform-origin: bottom left;
    transition: all 0.35s var(--ease-spring);
    z-index: 100;
}

.plus-panel.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}

[data-theme="dark"] .plus-panel {
    background: rgba(28, 28, 31, 0.85);
    border-color: rgba(255, 255, 255, 0.1);
}

.plus-panel-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-text);
    cursor: pointer;
    transition: all 0.25s var(--ease-out);
    min-width: 72px;
    position: relative;
}

.plus-panel-item:hover {
    background: var(--color-primary-subtle);
}

.plus-panel-item:active { transform: scale(0.96); }

.plus-panel-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--color-primary);
    color: white;
    transition: all 0.25s var(--ease-out);
}

.plus-panel-item:hover .plus-panel-icon {
    transform: scale(1.05);
    box-shadow: var(--shadow-sm);
}

.plus-panel-item span {
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
}

/* 禁用状态 */
.plus-panel-item-disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.plus-panel-item-disabled:hover {
    background: transparent;
}

.plus-panel-item-disabled .plus-panel-icon {
    background: var(--color-text-tertiary);
}

.plus-panel-item-disabled:hover .plus-panel-icon {
    transform: none;
    box-shadow: none;
}

.plus-panel-badge {
    font-size: 0.6rem;
    color: var(--color-text-tertiary);
    font-weight: 400;
}

/* ============================================
   初访向导页面布局
   ============================================ */
.intake-page {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    background: var(--color-bg-primary);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
    overflow-y: auto;
}
.intake-page.active {
    opacity: 1;
    transform: translateY(0);
}
.intake-page.hiding {
    opacity: 0;
    transform: translateY(-30px) scale(0.98);
}
.intake-page.hidden {
    display: none;
}
.intake-container {
    width: 100%;
    max-width: 680px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 0;
}
@media (min-width: 768px) {
    .intake-container {
        min-height: auto;
        padding: 32px;
    }
}
.intake-header {
    padding: 48px 32px 32px;
    text-align: center;
    background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg-primary) 100%);
}
@media (max-width: 767px) {
    .intake-header {
        padding: 32px 24px 24px;
    }
}
.intake-step-indicator {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}
.intake-title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 12px;
    line-height: 1.2;
}
.intake-subtitle {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    max-width: 480px;
    margin: 0 auto;
}
.intake-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 32px 48px;
    overflow-y: auto;
}
@media (max-width: 767px) {
    .intake-content {
        padding: 0 24px 32px;
    }
}
.intake-question {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text-primary);
    line-height: 1.6;
    margin-bottom: 32px;
    padding-top: 16px;
}
@media (max-width: 767px) {
    .intake-question {
        font-size: 1.125rem;
        margin-bottom: 24px;
    }
}
.intake-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}
.intake-option {
    padding: 18px 20px;
    border: 1.5px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-surface);
    color: var(--color-text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 12px;
}
.intake-option:hover {
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.04);
}
.intake-option.selected {
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.08);
}
.intake-option-marker {
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    flex-shrink: 0;
}
.intake-option.selected .intake-option-marker {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}
.intake-input-area {
    display: flex;
    gap: 12px;
    padding-top: 8px;
}
.intake-input-area input {
    flex: 1;
    padding: 16px 20px;
    border: 1.5px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface);
    color: var(--color-text-primary);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.intake-input-area input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}
.intake-input-area input::placeholder {
    color: var(--color-text-tertiary);
}
.intake-input-area button {
    width: 52px;
    height: 52px;
    border: none;
    background: var(--color-primary);
    color: white;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}
.intake-input-area button:hover:not(:disabled) {
    transform: scale(1.02);
    background: var(--color-primary-dark);
}
.intake-input-area button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================
   初访安全支持布局
   ============================================ */
.safety-support-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    backdrop-filter: blur(4px);
}
.safety-support-container {
    background: var(--color-surface);
    border-radius: 20px;
    width: 90%;
    max-width: 400px;
    padding: 32px;
    text-align: center;
}
.safety-support-header {
    margin-bottom: 24px;
}
.safety-support-icon {
    font-size: 48px;
    margin-bottom: 8px;
}
.safety-support-header h3 {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    font-weight: normal;
}
.safety-support-card {
    background: var(--color-bg-secondary);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
}
.safety-support-actions {
    display: flex;
    gap: 12px;
}

.safety-call-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 12px;
}

.safety-call-btn {
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid var(--color-separator);
    border-radius: 12px;
    background: var(--color-surface);
    color: var(--color-text-primary);
    cursor: pointer;
}

.safety-call-btn:last-child { grid-column: 1 / -1; }
.safety-call-btn:focus-visible { outline: 3px solid rgba(184, 149, 110, 0.35); outline-offset: 2px; }
.safety-support-btn {
    flex: 1;
    padding: 14px;
    border: none;
    border-radius: 12px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
}
.safety-support-btn-primary {
    background: var(--color-primary);
    color: white;
}
.safety-support-btn:hover {
    transform: translateY(-2px);
}

/* ============================================
   移动端适配
   ============================================ */

/* 首页移动端适配 */
@media (max-width: 768px) {
    .login-page {
        align-items: flex-start;
        perspective: none;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .login-content {
        position: relative;
        flex-direction: column;
        gap: 0;
        padding: 24px;
        min-height: 100vh;
        min-height: 100dvh;
        width: 100%;
        justify-content: center;
    }

    .hero-section {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding-bottom: 40px;
    }

    .hero-section.shifted {
        display: none;
    }

    .brand-logo { margin-bottom: 28px; gap: 12px; flex-shrink: 0; }
    .logo-mark { width: 42px; height: 42px; flex-shrink: 0; }
    .logo-text { font-size: 1.2rem; }
    .brand-headline { font-size: 1.5rem; margin-bottom: 14px; line-height: 1.4; }
    .brand-headline .highlight { font-size: 1.05em; margin-top: 4px; }
    .brand-subtitle { font-size: 0.8rem; margin-bottom: 28px; line-height: 2; max-width: 260px; }
    .btn-start { padding: 14px 32px; font-size: 0.95rem; flex-shrink: 0; }

    .btn-start-group {
        flex-shrink: 0;
    }

    .login-form-section {
        display: none;
        position: fixed !important;
        top: 50% !important;
        left: 50% !important;
        right: auto !important;
        transform: translate(-50%, -50%) !important;
        width: calc(100% - 48px);
        max-width: 360px;
        max-height: 85vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        margin-left: 0 !important;
        pointer-events: none;
    }

    .login-form-section.visible {
        display: block;
        opacity: 1;
        pointer-events: auto;
        transform: translate(-50%, -50%) !important;
        animation: loginFormFadeIn 0.35s var(--ease-out);
    }

    @keyframes loginFormFadeIn {
        from { opacity: 0; transform: translate(-50%, -48%) !important; }
        to { opacity: 1; transform: translate(-50%, -50%) !important; }
    }

    .form-card {
        padding: 24px;
        border-radius: var(--radius-lg);
    }

    .form-title { font-size: 1.5rem; }
    .form-tabs { margin-bottom: 20px; }
    .form-tab { padding: 12px 16px; }
    .form-group { margin-bottom: 16px; }
    .form-input { padding: 14px 16px; }
    .btn-submit { padding: 14px 20px; margin-top: 4px; }

    .login-form-section.visible .btn-back {
        display: flex;
    }
}

/* 对话页面移动端适配 */
@media (max-width: 1024px) {
    .chat-header {
        position: relative;
        left: 0 !important;
    }

    .chat-main {
        margin-left: 0 !important;
        margin-top: 0;
    }

    .sessions-sidebar {
        z-index: 600;
        width: 85vw;
        max-width: 320px;
        transform: translateX(-100%);
        transition: transform 0.35s var(--ease-spring);
    }

    .chat-page.active .sessions-sidebar.open { 
        transform: translateX(0) !important;
        box-shadow: 4px 0 24px rgba(0,0,0,0.15);
    }

    [data-theme="dark"] .chat-page.active .sessions-sidebar.open { box-shadow: 4px 0 24px rgba(0,0,0,0.4); }

    /* 移动端：header始终显示菜单按钮（展开用） */
    .chat-header .btn-menu {
        display: flex !important;
    }

    /* 移动端：侧边栏展开时，内部显示关闭按钮 */
    .chat-page.active .sessions-sidebar.open .btn-menu {
        display: flex !important;
    }

    /* 移动端：侧边栏收起时，内部隐藏按钮 */
    .chat-page.active .sessions-sidebar:not(.open) .btn-menu {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .chat-header { padding: 6px 16px; background: transparent; }
    .header-logo-mark { width: 32px; height: 32px; font-size: 1rem; }
    .header-title { font-size: 1rem; letter-spacing: 0.03em; }
    .user-info { padding: 0; }
    .user-avatar { width: 34px; height: 34px; font-size: 0.8rem; }
    .btn-logout { padding: 6px 12px; font-size: 0.75rem; }

    .chat-input-area { padding: 12px 16px 16px; border-top: none; background: transparent; }
    .input-container { padding: 8px; border: none; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
    [data-theme="dark"] .input-container { border: none; }
    .message-input { padding: 8px 10px; font-size: 0.95rem; }
    .btn-send { width: 40px; height: 40px; }
    .btn-plus { width: 44px; height: 44px; flex-shrink: 0; touch-action: manipulation; }
    .plus-panel { gap: 4px; padding: 8px; z-index: 999; flex-wrap: wrap; max-width: calc(100vw - 32px); }
    .plus-panel-item { padding: 8px 10px; gap: 4px; min-width: 64px; flex: 0 0 auto; }
    .plus-panel-item span { font-size: 0.7rem; }
    .plus-panel-icon { width: 40px; height: 40px; }
    .plus-panel-icon svg { width: 18px; height: 18px; }
}

@media (max-width: 480px) {
    .user-name { max-width: 50px; }
}

/* ============================================
   Apple-inspired refinement layer
   ============================================ */
.dynamic-bg {
    background:
        radial-gradient(circle 70vmax at 50% -20%, rgba(232,150,91,0.095) 0%, transparent 46%),
        linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
    animation: none;
}

.ambient-glow,
.light-orb {
    display: none;
}

.noise-texture {
    opacity: 0.006;
}

.login-content {
    max-width: 1040px;
    padding: 48px;
}

.hero-section {
    max-width: 440px;
}

.brand-logo {
    gap: 14px;
    margin-bottom: 44px;
}

.logo-mark {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    box-shadow: 0 1px 2px rgba(44, 24, 16, 0.06), 0 10px 30px rgba(232, 150, 91, 0.12);
}

.logo-text {
    font-family: var(--font-sans);
    font-size: 1.35rem;
    font-weight: 600;
    font-style: normal;
    letter-spacing: 0;
}

.brand-headline {
    font-family: var(--font-serif);
    font-size: clamp(1.9rem, 3.55vw, 2.9rem);
    font-weight: 300;
    letter-spacing: 0.05em;
    line-height: 1.34;
    color: rgba(72, 52, 42, 0.68);
    margin-bottom: 24px;
    opacity: 1;
    transform: none;
    animation: none;
    text-shadow: none;
}

.brand-headline .highlight {
    display: inline;
    margin-top: 0;
    color: rgba(86, 62, 50, 0.72);
    font-size: 1em;
    font-weight: 300;
    letter-spacing: 0.052em;
}

.brand-subtitle {
    max-width: 420px;
    margin-bottom: 42px;
    font-size: clamp(0.92rem, 1.35vw, 1rem);
    font-weight: 400;
    line-height: 1.95;
    letter-spacing: 0;
    color: rgba(107, 86, 72, 0.74);
    opacity: 1;
    transform: none;
    animation: none;
}

[data-theme="dark"] .brand-headline {
    color: rgba(240, 234, 228, 0.7);
    text-shadow: none;
}

[data-theme="dark"] .brand-headline .highlight {
    color: rgba(240, 184, 138, 0.74);
}

[data-theme="dark"] .brand-subtitle {
    color: rgba(200, 191, 182, 0.72);
}

.brand-char {
    display: inline-block;
    opacity: 0;
    transform: translateY(8px);
    filter: blur(5px);
    animation: landingCharIn 0.82s var(--ease-spring) forwards;
    animation-delay: calc(160ms + var(--char-index) * 58ms);
    will-change: opacity, transform, filter;
}

.brand-subtitle .brand-char {
    transform: translateY(8px);
    filter: blur(5px);
    animation-duration: 0.62s;
    animation-delay: calc(420ms + var(--char-index) * 22ms);
}

@keyframes landingCharIn {
    0% {
        opacity: 0;
        transform: translateY(8px);
        filter: blur(5px);
    }
    62% {
        opacity: 1;
        filter: blur(0);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .brand-char {
        opacity: 1;
        transform: none;
        filter: none;
        animation: none;
    }
}

.login-form-section.visible {
    width: 408px;
    margin-left: 72px;
}

.chat-page {
    background: transparent;
}

.chat-header {
    min-height: var(--header-height);
    padding: 8px 18px;
    background: rgba(251, 247, 242, 0.58);
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    border-bottom: 1px solid rgba(44, 24, 16, 0.045);
}

[data-theme="dark"] .chat-header {
    background: rgba(28, 20, 16, 0.58);
}

.header-title {
    font-family: 'Playfair Display', var(--font-serif);
    font-size: 1.25rem;
    font-style: italic;
    font-weight: 500;
    letter-spacing: 0.04em;
}

.header-logo-mark {
    box-shadow: inset 0 0 0 1px var(--material-border);
    border: none;
}

.sessions-sidebar {
    width: var(--sidebar-width);
    background: rgba(251, 247, 242, 0.42) !important;
    border-right: 1px solid rgba(44, 24, 16, 0.045);
    backdrop-filter: blur(22px) saturate(145%);
    -webkit-backdrop-filter: blur(22px) saturate(145%);
    --sidebar-control-bg: rgba(44, 24, 16, 0.022);
    --sidebar-control-bg-hover: rgba(232, 150, 91, 0.065);
    --sidebar-control-bg-active: rgba(232, 150, 91, 0.085);
    --sidebar-control-border: rgba(44, 24, 16, 0.055);
}

[data-theme="dark"] .sessions-sidebar {
    background: rgba(28, 20, 16, 0.42) !important;
    border-right-color: rgba(240, 234, 228, 0.055);
    --sidebar-control-bg: rgba(255, 255, 255, 0.032);
    --sidebar-control-bg-hover: rgba(232, 150, 91, 0.09);
    --sidebar-control-bg-active: rgba(232, 150, 91, 0.11);
    --sidebar-control-border: rgba(240, 234, 228, 0.055);
}

.sidebar-header {
    padding: 18px 18px 14px;
    border-bottom-color: var(--color-separator);
}

.sidebar-title {
    font-family: var(--font-sans);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0;
}

.sessions-list {
    padding: 10px;
}

.session-item {
    padding: 12px 12px;
    border: 1px solid transparent;
    border-left: 0;
    border-radius: var(--radius-md);
}

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

.session-item.active {
    background: var(--sidebar-control-bg-active);
    border-color: var(--sidebar-control-border);
    box-shadow: none;
}

[data-theme="dark"] .session-item:hover {
    background: var(--sidebar-control-bg-hover);
}

[data-theme="dark"] .session-item.active {
    background: var(--sidebar-control-bg-active);
    border-color: var(--sidebar-control-border);
}

.session-preview {
    font-size: 0.9rem;
}

.session-meta {
    font-size: 0.72rem;
}

.btn-new-chat-sidebar {
    border-style: solid;
    border-color: var(--sidebar-control-border);
    background: var(--sidebar-control-bg);
    border-radius: var(--radius-md);
    box-shadow: none;
}

.btn-new-chat-sidebar:hover {
    background: var(--sidebar-control-bg-hover);
    box-shadow: none;
}

.chat-main {
    background: transparent;
}

.chat-input-area {
    padding: 14px clamp(16px, 3vw, 32px) 22px;
}

.input-container {
    max-width: 820px;
    margin: 0 auto;
    padding: 8px;
    min-height: 60px;
    background: var(--material-bg-strong);
    border: 1px solid var(--material-border);
    border-radius: 24px;
    box-shadow: 0 1px 2px rgba(44, 24, 16, 0.03), 0 18px 45px rgba(44, 24, 16, 0.055);
    backdrop-filter: blur(22px) saturate(150%);
    -webkit-backdrop-filter: blur(22px) saturate(150%);
}

[data-theme="dark"] .input-container {
    background: var(--material-bg-strong);
    border-color: var(--material-border);
}

.input-container:focus-within {
    border-color: rgba(var(--color-primary-rgb), 0.22);
    box-shadow: 0 0 0 2px rgba(var(--color-primary-rgb), 0.075), 0 18px 45px rgba(44, 24, 16, 0.055);
}

.message-input {
    font-size: 0.98rem;
}

.intake-page {
    background: transparent;
}

.intake-container {
    max-width: 620px;
}

.intake-header {
    background: transparent;
}

.intake-title,
.intake-question {
    color: var(--color-text);
}

.intake-title {
    font-family: var(--font-sans);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 650;
    letter-spacing: -0.02em;
}

.intake-option,
.intake-input-area input,
.safety-support-container,
.safety-support-card {
    background: var(--material-bg-strong);
    border-color: var(--material-border);
}

.intake-option:hover,
.intake-option.selected {
    background: var(--color-accent-subtle);
    transform: none;
}

@media (min-width: 1025px) {
    .chat-header {
        left: var(--sidebar-width);
    }

    .chat-main {
        margin-left: var(--sidebar-width);
        margin-top: var(--header-height);
    }
}

@media (max-width: 768px) {
    .login-content {
        padding: 24px;
    }

    .brand-logo {
        margin-bottom: 36px;
    }

    .brand-headline {
        font-size: clamp(1.88rem, 9.2vw, 2.42rem);
        line-height: 1.3;
        margin-bottom: 22px;
    }

    .brand-subtitle {
        max-width: 310px;
        font-size: 0.94rem;
        line-height: 1.8;
        margin-bottom: 36px;
    }

    .chat-header {
        background: rgba(251, 247, 242, 0.72);
    }

    .header-title {
        font-size: 1.1rem;
        letter-spacing: 0.035em;
    }

    [data-theme="dark"] .chat-header {
        background: rgba(28, 20, 16, 0.72);
    }

    .input-container {
        min-height: 54px;
        border-radius: 22px;
    }
}