/* gateway/client/style.css —— 覆盖在原导航站 nav_style.css 之上
   结构：横向顶栏(LOGO按钮) + 直角标签卡对话窗 + 原导航站(原封不动) + 纯白遮罩
   层级：遮罩 < 标签卡 < 导航站 < 顶栏 */

/* ---------- 主题变量：背景必须纯黑/纯白（与原导航站统一变量名） ---------- */
:root {
    --bg-color: #ffffff;            /* 纯白背景（浅色） */
    --text-color: #111111;
    --menu-bg: rgb(240, 240, 240);
    --menu-border: rgba(0, 0, 0, 0.08);
    --menu-shadow: rgba(0, 0, 0, 0.04);
    --pixel-color: #000000;
    --status-color: rgba(0,0,0,0.35);
    --detail-color: rgba(0,0,0,0.6);
    --card-blur: 16px;
    /* 客户端扩展 */
    --surface: #ffffff;
    --surface-2: #f6f6f6;
    --border: #e2e2e2;
    --text: #111111;
    --text-dim: #8a8a8a;
    --accent: #2d6cdf;
    --accent-text: #ffffff;
    --mask: #ffffff;   /* 纯白遮罩（完全覆盖底层对话卡片） */
    --shadow: rgba(0, 0, 0, 0.06);
    --input-bg: #ffffff;
}
body.dark-mode {
    --bg-color: #000000;            /* 纯黑背景（深色） */
    --text-color: #f2f2f2;
    --menu-bg: rgb(15, 15, 15);
    --menu-border: rgba(255, 255, 255, 0.08);
    --menu-shadow: rgba(0, 0, 0, 0.5);
    --pixel-color: #ffffff;
    --status-color: rgba(255,255,255,0.35);
    --detail-color: rgba(255,255,255,0.7);
    /* 客户端扩展 */
    --surface: #000000;
    --surface-2: #141414;
    --border: #2a2a2a;
    --text: #f2f2f2;
    --text-dim: #7a7a7a;
    --accent: #4a8cff;
    --accent-text: #ffffff;
    --mask: #000000;            /* 深色下遮罩用纯黑（完全覆盖底层对话卡片） */
    --shadow: rgba(0, 0, 0, 0.6);
    --input-bg: #000000;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
    user-select: none;
}

/* ========== 横向顶栏 ========== */
#topbar {
    position: fixed; top: 0; left: 0; right: 0; height: 56px; z-index: 60;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 16px;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border);
}
.topbar-left { display: flex; align-items: center; gap: 10px; }
.logo-btn {
    width: 34px; height: 34px; border: none; border-radius: 0;
    background: transparent; cursor: pointer; overflow: visible;
    display: flex; align-items: center; justify-content: center;
    padding: 0; outline: none; box-shadow: none;
    transition: transform 0.2s ease, opacity 0.2s ease;
}
.logo-btn img { width: 100%; height: 100%; object-fit: contain; display: block; }
.logo-btn:hover { transform: scale(1.08); }
.brand-title { font-size: 16px; font-weight: 800; letter-spacing: 0.04em; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.theme-toggle {
    padding: 7px 12px; border-radius: 0; border: 1px solid var(--border);
    background: transparent; color: var(--text-dim); font-size: 12px; cursor: pointer;
    letter-spacing: 0.05em;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }

.avatar-wrap { position: relative; }
.user-avatar {
    width: 34px; height: 34px; border-radius: 50%; cursor: pointer;
    background: var(--accent); color: var(--accent-text);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 15px; border: none;
}

/* ========== 账号信息卡片（导航站 menu-card 直角标签卡同款风格 + 同套动画） ========== */
#account-overlay {
    position: fixed; inset: 0; z-index: 50; display: none;
    align-items: center; justify-content: center;
    background: transparent;
    pointer-events: none;
}
#account-overlay.open {
    display: flex;
    pointer-events: auto;
}
#account-card {
    position: relative;
    width: 440px; max-width: 92vw;
    height: auto; max-height: 88vh;
    background: var(--menu-bg);
    backdrop-filter: blur(var(--card-blur));
    -webkit-backdrop-filter: blur(var(--card-blur));
    border: 1px solid var(--menu-border);
    box-shadow: 0 16px 48px var(--menu-shadow);
    padding: 0;
    opacity: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    will-change: transform, opacity;
}
/* 与导航站 menu-card 一致的顶部渐变高光 */
#account-card::before {
    content: '';
    position: absolute; top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    z-index: 2;
}
body.dark-mode #account-card::before {
    background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, transparent 50%);
}

/* 展开动画：复用导航站 slide-tr（右上角弹性滑入），同套 cubic-bezier */
#account-overlay.open #account-card {
    animation: account-slide-in 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
@keyframes account-slide-in {
    0%   { opacity: 0; transform: translate(32px, -32px) scale(0.90); }
    100% { opacity: 1; transform: translate(0, 0) scale(1); }
}
/* 收起动画：向右上方的专用反向动画（同套弹性曲线）
   注意：选择器必须比展开动画 #account-overlay.open #account-card 更高优先级 */
#account-overlay.open #account-card.account-closing {
    animation: account-slide-out 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
@keyframes account-slide-out {
    0%   { opacity: 1; transform: translate(0, 0) scale(1); }
    100% { opacity: 0; transform: translate(40px, -40px) scale(0.85); }
}

.account-content {
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    text-align: left;
    position: relative;
    z-index: 1;
    max-height: calc(88vh - 16px);
    overflow: hidden;
}
.account-content .card-head {
    padding: 12px 20px 10px;
    border-bottom: 1px solid var(--menu-border);
    flex-shrink: 0;
}
.account-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 14px 20px 20px;
    overflow-y: auto;
    max-height: calc(88vh - 80px);
}
.account-profile-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 0 12px;
    border-bottom: 1px solid var(--menu-border);
}
.account-avatar {
    width: 48px; height: 48px; border-radius: 50%; flex: none;
    background: var(--accent); color: var(--accent-text);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.account-titles { min-width: 0; flex: 1; display: flex; flex-direction: column; gap: 2px; }
.account-name { font-size: 16px; font-weight: 700; color: var(--text); word-break: break-all; }
.account-sub { font-size: 12px; color: var(--text-dim); word-break: break-all; }
.account-uid-tag {
    display: inline-block;
    align-self: flex-start;
    font-size: 11px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    color: var(--accent);
    background: var(--surface-hover);
    border: 1px solid var(--menu-border);
    padding: 1px 7px;
    border-radius: 4px;
    margin-top: 3px;
    letter-spacing: 0.04em;
    font-weight: 600;
}
.account-row { font-size: 13px; color: var(--text); padding: 6px 0; border-bottom: 1px solid var(--menu-border); }
.account-row:last-of-type { border-bottom: none; }
.account-linked { padding: 2px 0; }
.account-linked-label { font-size: 12px; color: var(--text-dim); padding-bottom: 4px; }
.account-chip {
    display: inline-block; margin: 2px 6px 4px 0; padding: 4px 10px; cursor: pointer;
    font-size: 12px; border: 1px solid var(--menu-border); border-radius: 12px; color: var(--text);
    transition: all 0.2s ease;
}
.account-chip:hover { border-color: var(--accent); }
.account-chip.active { color: var(--accent); border-color: var(--accent); background: var(--surface-hover); font-weight: 600; }
.account-bind { display: flex; flex-wrap: wrap; gap: 8px; padding: 4px 0; }
.account-bind input {
    flex: 1 1 100%; padding: 8px 10px; font-size: 13px; color: var(--text);
    background: var(--bg-color); border: 1px solid var(--menu-border); border-radius: 6px;
    min-height: 34px;
}
.account-bind-btn {
    flex: 1 1 100%; padding: 8px 0; font-size: 13px; cursor: pointer; color: var(--accent);
    background: transparent; border: 1px solid var(--accent); border-radius: 6px;
    transition: all 0.2s ease;
    font-weight: 600;
}
.account-bind-btn:hover { background: var(--surface-hover); }
.account-actions { display: flex; gap: 10px; margin-top: 6px; padding-top: 2px; }
.account-btn {
    flex: 1; padding: 10px 0; border: 1px solid var(--menu-border);
    background: transparent; color: var(--text); font-size: 13px; cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s ease;
}
.account-btn:hover { color: var(--accent); border-color: var(--accent); }
.account-btn.danger:hover { color: #e05050; border-color: #e05050; }
.avatar-logout:hover { color: var(--accent); border-color: var(--accent); }

/* ========== 登录/注册弹窗 ========== */
#auth-overlay {
    position: fixed; inset: 0; z-index: 200;
    background-color: var(--bg-color);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none; transition: opacity 0.3s ease;
}
#auth-overlay.active { opacity: 1; pointer-events: auto; }
.auth-modal {
    width: 380px; max-width: 92vw;
    background: var(--surface); border: 1px solid var(--border);
    box-shadow: 0 20px 60px var(--shadow); overflow: hidden;
}
.auth-tabs { display: flex; border-bottom: 1px solid var(--border); }
.auth-tab {
    flex: 1; padding: 14px 0; background: transparent; border: none;
    font-size: 15px; font-weight: 600; color: var(--text-dim); cursor: pointer;
    border-bottom: 2px solid transparent;
}
.auth-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.auth-body { padding: 22px 24px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12px; color: var(--text-dim); margin-bottom: 6px; letter-spacing: 0.05em; }
.role-select { display: flex; gap: 14px; font-size: 13px; color: var(--text); }
.role-select label { display: flex; align-items: center; gap: 5px; margin: 0; letter-spacing: 0; }
.role-select input { width: auto; margin: 0; }
.field input {
    width: 100%; box-sizing: border-box; padding: 10px 12px;
    background: var(--input-bg); border: 1px solid var(--border);
    color: var(--text); font-size: 14px; font-family: inherit;
}
.field input:focus { outline: none; border-color: var(--accent); }

/* 密码输入框与眼睛切换按钮 */
.password-input-wrap {
    position: relative; width: 100%; display: flex; align-items: center;
}
.password-input-wrap input {
    padding-right: 38px;
}
.btn-pwd-eye {
    position: absolute; right: 0; top: 0; bottom: 0;
    width: 38px; border: none; background: transparent;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    color: var(--text-dim); font-size: 15px; user-select: none; outline: none;
    transition: color 0.2s ease, opacity 0.2s ease;
}
.btn-pwd-eye:hover { color: var(--accent); }
.auth-btn {
    width: 100%; margin-top: 6px; padding: 11px 0;
    background: var(--accent); color: var(--accent-text); border: none;
    font-size: 15px; font-weight: 700; cursor: pointer;
}
.auth-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.auth-hint { margin-top: 10px; font-size: 12px; color: #d24b4b; min-height: 16px; text-align: center; }

/* ========== 对话页：直角标签卡（沿用 .menu-card 布局与层级） ========== */
#chat-page {
    position: fixed; top: 56px; left: 0; right: 0; bottom: 0; z-index: 15;
    background: var(--bg-color);
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}
#chat-page.hidden {
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
}
/* 标签卡 = 原导航站 .menu-card 直角卡片；对话窗在此基础放大为长条，去掉悬停放大动画 */
#chat-card.chat-tag-card {
    width: min(860px, 100%);
    height: calc(100vh - 56px - 40px);
    height: calc(100dvh - 56px - 40px);
    aspect-ratio: auto;
    opacity: 1;
    animation: none;
    transform: none !important;
    transition: none !important;
    background: var(--card-bg, var(--menu-bg));
    backdrop-filter: blur(var(--card-blur));
    -webkit-backdrop-filter: blur(var(--card-blur));
    border: 1px solid var(--card-border, var(--menu-border));
    box-shadow: 0 18px 50px var(--menu-shadow);
    display: flex; flex-direction: column;
    overflow: hidden;
}
#chat-card.chat-tag-card:hover {
    transform: none !important;
}

/* 标签卡与导航站顶部条：深黑-中灰-浅白平滑自适应水平渐变条 */
.pixel-block,
#chat-card .pixel-block {
    width: 100% !important; height: 16px !important; flex-shrink: 0 !important; overflow: hidden !important;
    padding: 0 !important; display: block !important;
    background: linear-gradient(90deg, #1c1c1c 0%, #3e3e3e 20%, #707070 48%, #a8a8a8 75%, #dedede 92%, #ffffff 100%) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08) !important;
}
body.dark-mode .pixel-block,
body.dark-mode #chat-card .pixel-block {
    background: linear-gradient(90deg, #121212 0%, #343434 20%, #686868 48%, #9e9e9e 75%, #d4d4d4 92%, #ffffff 100%) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
}
.pixel-grid,
#chat-card .pixel-grid { display: none !important; }

.chat-content {
    flex: 1; width: 100%; display: flex; flex-direction: column;
    align-items: stretch !important; justify-content: flex-start;
    padding: 0; color: var(--text-color); text-align: left;
    position: relative; z-index: 1; min-height: 0;
}
.card-head {
    width: 100%;
    display: flex; align-items: baseline; justify-content: space-between;
    padding: 12px 20px 10px; border-bottom: 1px solid var(--border); flex-shrink: 0;
    box-sizing: border-box;
}
.card-title { font-size: 16px; font-weight: 700; letter-spacing: 0.02em; }
.card-sub { font-size: 12px; color: var(--text-dim); }

#chat-body { width: 100%; flex: 1; min-height: 0; overflow-y: auto; display: flex; flex-direction: column; }
.welcome {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 10px; padding: 12vh 20px 20px;
}
.welcome-logo { width: 64px; height: 64px; object-fit: contain; opacity: 0.9; }
body.dark-mode .welcome-logo,
body.dark-mode .logo-btn img,
body.dark-mode #main-logo {
    filter: invert(1) drop-shadow(0 0 12px rgba(255,255,255,0.15));
}
.welcome-logo.error { display: none; }
.welcome-logo-fallback { font-size: 60px; opacity: 0.9; }
.welcome h1 { font-size: 23px; font-weight: 800; letter-spacing: 0.04em; }
.welcome p { font-size: 13px; color: var(--text-dim); letter-spacing: 0.15em; }

.messages { width: 100%; box-sizing: border-box; padding: 18px 22px 10px; display: flex; flex-direction: column; gap: 16px; }
.msg-row { display: flex; gap: 10px; max-width: 100%; }
.msg-row.user { flex-direction: row-reverse; }
.msg-avatar {
    width: 30px; height: 30px; border-radius: 8px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center; font-size: 14px;
    background: var(--surface-2); border: 1px solid var(--border);
}
.msg-row.user .msg-avatar { background: var(--accent); color: var(--accent-text); border: none; }
.msg-bubble {
    max-width: 72%; padding: 10px 14px; border-radius: 0;
    background: var(--surface-2); border: 1px solid var(--border);
    font-size: 14px; line-height: 1.7; word-break: break-word; white-space: pre-wrap;
    display: flex; flex-direction: column; gap: 4px;
}
.msg-row.user .msg-bubble { background: var(--accent); color: var(--accent-text); border: none; }

/* 仿 DeepSeek 思考时间提示 (灰色小字) */
.think-badge {
    font-size: 12px; color: var(--text-dim); line-height: 1.4;
    display: flex; align-items: center; gap: 4px; user-select: none;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin-bottom: 2px;
}
.think-badge::before {
    content: "💭";
    font-size: 11px;
    opacity: 0.8;
}

/* 系统级/错误/状态提示 (统一居中或气泡内的灰色小字) */
.msg-row.system { justify-content: center; width: 100%; margin: 4px 0; }
.msg-row.system .msg-avatar { display: none; }
.msg-row.system .msg-bubble {
    background: transparent !important; border: none !important;
    color: var(--text-dim) !important; font-size: 12px !important;
    padding: 4px 12px; text-align: center; max-width: 90%;
    line-height: 1.5;
}

.input-wrap {
    width: 100%; box-sizing: border-box;
    padding: 10px 18px 14px; flex-shrink: 0;
    display: flex; gap: 10px; align-items: flex-end;
}
.input-wrap textarea {
    flex: 1; width: 100%; min-height: 38px; height: 38px; max-height: 120px; resize: none;
    box-sizing: border-box;
    background: var(--input-bg); border: 1px solid var(--border);
    padding: 8px 12px; color: var(--text); font-size: 14px; font-family: inherit; line-height: 1.4;
}
.input-wrap textarea:focus { outline: none; border-color: var(--accent); }
.send-btn {
    height: 38px; padding: 0 20px; border: none;
    background: var(--accent); color: var(--accent-text);
    font-size: 14px; font-weight: 700; cursor: pointer; flex-shrink: 0;
}
.send-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ========== 遮罩（纯白/纯黑，层级高于标签卡，低于导航站） ========== */
#nav-mask {
    position: fixed; inset: 0; z-index: 20;
    background-color: var(--mask);          /* 纯白/纯黑遮罩 */
    opacity: 0; pointer-events: none;
    transition: opacity 0.5s ease;
}
#nav-mask.nav-open { opacity: 1; pointer-events: auto; }

/* ========== 原导航站容器（层级高于遮罩） ========== */
#nav-station {
    position: fixed; inset: 0; z-index: 25;
    opacity: 0; pointer-events: none;
    transition: opacity 0.5s ease;
}
#nav-station.nav-open { opacity: 1; pointer-events: auto; }
/* 导航站背景透明，遮罩由 #nav-mask 提供 */
#nav-station #app-bg { background-color: transparent; opacity: 0.6; }

/* 顶栏 LOGO → 网页中心：展开导航站时平滑过渡到中心；收起回退对话页时直接隐藏，不反向膨胀放大 */
#nav-station #logo-container {
    z-index: 30;
    width: 34px;
    height: 34px;
    top: 11px; left: 16px;
    transform: none;
    opacity: 0;
    transition: opacity 0.25s ease;
    animation: none;
    pointer-events: none;
}
#nav-station.nav-open #logo-container {
    top: 50%; left: 50%;
    width: 340px;
    height: auto;
    transform: translate(-50%, -50%);
    opacity: 1;
    pointer-events: auto;
    transition: top 0.4s cubic-bezier(0.25, 1, 0.5, 1),
                left 0.4s cubic-bezier(0.25, 1, 0.5, 1),
                width 0.4s cubic-bezier(0.25, 1, 0.5, 1),
                height 0.4s cubic-bezier(0.25, 1, 0.5, 1),
                transform 0.4s cubic-bezier(0.25, 1, 0.5, 1),
                opacity 0.3s ease;
}
#nav-station #logo-container.active {
    transform: translate(-50%, -50%) scale(0.42);
}

/* 返回对话页按钮：平滑渐显渐隐 */
.back-chat-btn {
    position: fixed; top: 70px; left: 20px; z-index: 35;
    padding: 8px 16px;
    background: var(--surface); border: 1px solid var(--border);
    color: var(--text); font-size: 13px; font-weight: 600; cursor: pointer;
    display: flex; align-items: center; gap: 6px;
    box-shadow: 0 4px 16px var(--shadow);
    opacity: 0; pointer-events: none;
    transform: translateX(-10px);
    transition: opacity 0.4s cubic-bezier(0.25, 1, 0.5, 1),
                transform 0.4s cubic-bezier(0.25, 1, 0.5, 1),
                border-color 0.2s ease, color 0.2s ease;
}
.back-chat-btn.visible {
    opacity: 1; pointer-events: auto;
    transform: translateX(0);
}
.back-chat-btn:hover { border-color: var(--accent); color: var(--accent); }

/* 响应式 */
@media screen and (max-width: 768px) {
    #chat-page { padding: 10px; }
    #chat-card.chat-tag-card { height: calc(100vh - 56px - 20px); height: calc(100dvh - 56px - 20px); }
    #nav-station.nav-open #logo-container { 
        width: 160px; 
    }
    #nav-station #logo-container.active {
        transform: translate(-50%, -50%) scale(0.32);
    }
    .welcome-logo { width: 44px; height: 44px; }
    .msg-bubble { max-width: 85%; }
    .back-chat-btn { top: 64px; left: 12px; font-size: 12px; padding: 6px 12px; }
}