/* ====== CytoPrometheus 样式 v2 ====== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg-primary: #0f1724;
    --bg-secondary: #1a2332;
    --bg-tertiary: #162032;
    --bg-hover: #1e293b;
    --border: #1e293b;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #38bdf8;
    --accent-dim: #0c4a6e;
    --user-msg: #1e40af;
    --sidebar-width: 280px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Microsoft YaHei", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

#app {
    display: flex;
    height: 100vh;
    position: relative;
}

/* ====== 侧边栏 ====== */
.sidebar {
    height: 100vh; position: fixed; top: 0; bottom: 0;
    right: max(0px, calc(50% - 400px));
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    display: flex; flex-direction: column;
    z-index: 100;
    transition: clip-path var(--transition), opacity var(--transition);
    overflow: hidden;
}
.sidebar:not(.open) {
    clip-path: inset(0 0 0 100%);
    opacity: 0;
    pointer-events: none;
}

/* 拖拽手柄 */
.sidebar-resize {
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px; cursor: col-resize;
    background: transparent; transition: background 0.15s;
    z-index: 10;
}
.sidebar-resize:hover,
.sidebar-resize:active {
    background: var(--accent);
}

/* 侧边栏遮罩 */
.sidebar-overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: transparent; z-index: 99;
    display: none;
}
.sidebar-overlay.show { display: block; }

/* 标题栏 = 搜索 + 收起 */
.sidebar-header {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 6px 10px 14px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.sidebar-search-input {
    flex: 1; padding: 8px 10px;
    background: var(--bg-primary); border: 1px solid var(--border);
    border-radius: 8px; color: var(--text-primary);
    font-size: 13px; font-family: inherit; outline: none;
    min-width: 0;
}
.sidebar-search-input:focus { border-color: var(--accent); }
.sidebar-close {
    font-size: 18px; cursor: pointer; opacity: 0.6; transition: opacity 0.2s;
    flex-shrink: 0; line-height: 1;
}
.sidebar-close:hover { opacity: 1; }

/* 内容区 */
.sidebar-content {
    flex: 1; overflow-y: auto; padding: 12px 12px;
}

/* 新建对话 */
.sidebar-new-chat {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px; margin-bottom: 4px;
    border-radius: 8px; cursor: pointer;
    color: var(--text-secondary); font-size: 14px;
    transition: background 0.2s;
}
.sidebar-new-chat:hover { background: var(--bg-hover); color: var(--text-primary); }
.new-chat-icon {
    width: 22px; height: 22px; display: flex; align-items: center;
    justify-content: center; border-radius: 6px;
    background: var(--accent-dim); color: var(--accent);
    font-size: 16px; font-weight: 700;
}

/* 分割线 */
.sidebar-divider {
    height: 1px; background: var(--border); margin: 10px 4px;
}

/* 历史记录标题 */
.sidebar-section-title {
    font-size: 11px; font-weight: 600; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.5px;
    padding: 6px 4px 10px;
}

/* 历史记录列表 */
.sidebar-history { display: flex; flex-direction: column; gap: 2px; }
.history-empty {
    padding: 20px 8px; text-align: center;
    color: var(--text-muted); font-size: 13px;
}

.history-item {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 8px; border-radius: 8px; cursor: pointer;
    transition: background 0.15s;
    position: relative;
}
.history-item:hover { background: var(--bg-hover); }
.history-item.active { background: var(--accent-dim); }
.history-icon { font-size: 14px; flex-shrink: 0; }
.history-text { flex: 1; min-width: 0; }
.history-title {
    font-size: 13px; color: var(--text-secondary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.history-time {
    font-size: 11px; color: var(--text-muted); margin-top: 2px;
}
.history-delete {
    font-size: 16px; color: var(--text-muted); opacity: 0;
    transition: opacity 0.15s; cursor: pointer;
    padding: 0 2px;
}
.history-item:hover .history-delete { opacity: 0.6; }
.history-delete:hover { opacity: 1 !important; color: #ef4444; }

/* 用户栏 */
.sidebar-user {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 18px; border-top: 1px solid var(--border);
    flex-shrink: 0;
}
.user-info {
    display: flex; align-items: center; gap: 8px;
    font-size: 13px; color: var(--text-secondary);
}
.user-avatar { font-size: 18px; }
.user-inbox {
    font-size: 16px; cursor: pointer; opacity: 0.6;
    position: relative; transition: opacity 0.2s;
}
.user-inbox:hover { opacity: 1; }
.user-actions {
    display: flex; align-items: center; gap: 14px;
}
.user-theme {
    font-size: 16px; cursor: pointer; opacity: 0.6;
    transition: opacity 0.2s;
}
.user-theme:hover { opacity: 1; }
.inbox-badge {
    position: absolute; top: -6px; right: -8px;
    background: #ef4444; color: #fff; font-size: 10px;
    width: 16px; height: 16px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}

/* ====== 主聊天区 ====== */
.main-area {
    flex: 1; display: flex; flex-direction: column;
    min-width: 0; height: 100vh;
    background: var(--bg-primary);
}

/* 顶部栏 */
.main-header {
    display: flex; align-items: baseline; gap: 10px;
    padding: 14px 20px 14px 0; border-bottom: 1px solid var(--border);
    flex-shrink: 0; background: var(--bg-primary);
    max-width: 800px; margin: 0 auto; width: 100%;
    position: relative;
}
.header-toggle {
    position: absolute; right: 0; top: 50%; transform: translateY(-50%);
    font-size: 22px; cursor: pointer; color: var(--text-muted);
    transition: color 0.2s; padding: 2px 4px; z-index: 50;
}
.header-toggle:hover { color: var(--text-primary); }
.main-header h1 {
    font-size: 18px; font-weight: 700; color: var(--accent);
    letter-spacing: -0.5px;
}
.header-subtitle { font-size: 12px; color: var(--text-muted); }
.mode-toggle {
    font-size: 22px; cursor: pointer; opacity: 0.6;
    transition: opacity 0.2s; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 48px;
}
.mode-toggle:hover { opacity: 1; }

/* 问题向导 */
.template-input {
    flex: 1; display: flex; flex-direction: column;
    border: 1px solid var(--border); border-radius: 12px;
    background: var(--bg-secondary); overflow: hidden;
    animation: slideUp 0.25s ease;
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.template-input-scroll {
    overflow-y: auto; padding: 12px 14px; flex: 1;
}
.template-input-footer {
    display: flex; align-items: center; gap: 16px;
    padding: 10px 14px; border-top: 1px solid var(--border);
    flex-shrink: 0;
}
.template-close-btn {
    font-size: 18px; cursor: pointer; opacity: 0.6;
    transition: opacity 0.2s; flex-shrink: 0;
    line-height: 1;
}
.template-close-btn:hover { opacity: 1; }
.template-selector { margin-bottom: 12px; }
.template-selector label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.template-selector select {
    width: 100%; padding: 8px 12px; background: var(--bg-primary);
    border: 1px solid var(--border); border-radius: 8px;
    color: var(--text-primary); font-size: 14px; outline: none;
}
.template-desc {
    font-size: 12px; color: var(--text-muted); margin-bottom: 12px;
    padding: 6px 10px; background: var(--bg-tertiary); border-radius: 6px;
}
.template-fields { }
.field-row { margin-bottom: 12px; }
.field-row label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 3px; }
.field-row .required { color: #ef4444; margin-left: 1px; }
.field-row select, .field-row input, .field-row textarea {
    width: 100%; padding: 7px 10px; background: var(--bg-primary);
    border: 1px solid var(--border); border-radius: 7px;
    color: var(--text-primary); font-size: 13px; font-family: inherit;
    outline: none; transition: border-color 0.2s;
}
.field-row select:focus, .field-row input:focus, .field-row textarea:focus { border-color: var(--accent); }
.field-number { display: flex; align-items: center; gap: 8px; }
.field-number input { flex: 1; }
.field-suffix { font-size: 12px; color: var(--text-muted); flex-shrink: 0; }
.template-submit {
    flex: 1; padding: 10px;
    background: var(--accent-dim); color: var(--accent);
    border: 1px solid rgba(56,189,248,0.3); border-radius: 8px;
    font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.2s;
}
.template-submit:hover:not(:disabled) { background: var(--accent); color: #fff; }
.template-submit:disabled { opacity: 0.3; cursor: not-allowed; }

/* 消息区 */
.chat-main { flex: 1; overflow-y: scroll; }
.messages {
    max-width: 800px; margin: 0 auto; padding: 24px 20px;
    display: flex; flex-direction: column; gap: 20px;
}

/* 欢迎消息 */
.welcome-msg {
    text-align: center; padding: 60px 20px;
    animation: fadeIn 0.4s ease;
}
.welcome-icon { font-size: 48px; margin-bottom: 16px; }
.welcome-text { font-size: 18px; color: var(--text-primary); line-height: 1.6; }
.welcome-sub { font-size: 14px; color: var(--text-secondary); display: block; margin-top: 6px; }
.welcome-copy { font-size: 12px; color: var(--text-muted); display: block; margin-top: 12px; }
.welcome-hints {
    display: flex; flex-wrap: wrap; justify-content: center; gap: 8px;
    margin-top: 24px;
}
.hint {
    padding: 8px 14px; background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: 20px;
    font-size: 13px; color: var(--text-secondary); cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}
.hint:hover { border-color: var(--accent); color: var(--text-primary); }

/* 消息气泡 */
.msg {
    display: flex; gap: 12px;
    animation: fadeIn 0.3s ease;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}
.msg-avatar {
    font-size: 24px; flex-shrink: 0; width: 36px; text-align: center;
}
.msg-body { flex: 1; min-width: 0; }
.msg-content {
    font-size: 15px; line-height: 1.7;
    padding: 12px 16px; border-radius: 12px;
    word-break: break-word;
}
.msg-content strong { color: inherit; font-weight: 700; }
.msg.user .msg-content {
    background: var(--user-msg); color: #e0e7ff;
}
.msg.assistant .msg-content {
    background: var(--bg-secondary); border: 1px solid var(--border);
}
.msg-meta {
    font-size: 11px; color: var(--text-muted); margin-top: 4px; padding: 0 4px;
}

/* 来源引用 */
.msg-sources { margin-top: 8px; font-size: 12px; color: var(--text-muted); }
.sources-label { margin-bottom: 4px; }
.source-item { margin: 2px 0; }
.source-item code {
    color: var(--accent); font-size: 11px;
    background: var(--bg-tertiary); padding: 1px 5px; border-radius: 3px;
    margin-right: 4px;
}
.source-meta {
    color: var(--text-muted); font-size: 10px; margin-right: 6px;
}

/* 解离程序下载 */
.msg-program-download { margin-top: 10px; }
.download-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; border-radius: 8px;
    background: var(--accent-dim); color: var(--accent);
    border: 1px solid rgba(56, 189, 248, 0.3);
    font-size: 13px; cursor: pointer;
    transition: all 0.2s;
}
.download-btn:hover {
    background: var(--accent); color: #fff;
    border-color: var(--accent);
}

/* 输入区 */
.input-area {
    padding: 12px 8px 16px 0; border-top: 1px solid var(--border);
    flex-shrink: 0; display: flex; gap: 8px; align-items: flex-start;
    max-width: 800px; margin: 0 auto; width: 100%;
}
.input-wrapper {
    position: relative; display: flex; flex: 1;
}
.input-area textarea {
    flex: 1; padding: 10px 48px 10px 14px;
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: 12px; color: var(--text-primary);
    font-size: 15px; font-family: inherit; resize: none;
    outline: none; transition: border-color 0.2s;
    min-height: 48px;
}
.input-area textarea:focus { border-color: var(--accent); }
.input-area textarea::placeholder { color: var(--text-muted); }
.send-btn {
    position: absolute;
    right: 6px; bottom: 6px;
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--accent-dim); color: var(--accent);
    border: none; font-size: 16px; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.2s; flex-shrink: 0;
}
.send-btn:hover:not(:disabled) { background: var(--accent); color: #fff; }
.send-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ====== 系统消息弹窗 ====== */
.inbox-modal {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5); z-index: 200;
    display: flex; align-items: center; justify-content: center;
}
.inbox-content {
    width: 400px; max-height: 500px; background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: 12px;
    display: flex; flex-direction: column; overflow: hidden;
}
.inbox-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 14px 18px; border-bottom: 1px solid var(--border);
    font-size: 15px; font-weight: 600;
}
.inbox-close {
    font-size: 20px; cursor: pointer; color: var(--text-muted);
    transition: color 0.2s;
}
.inbox-close:hover { color: var(--text-primary); }
.inbox-body {
    flex: 1; overflow-y: auto; padding: 12px 18px;
}
.inbox-empty { text-align: center; padding: 40px; color: var(--text-muted); font-size: 14px; }
.inbox-item {
    padding: 12px 0; border-bottom: 1px solid var(--border);
}
.inbox-item:last-child { border-bottom: none; }
.inbox-item-title { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.inbox-item-text { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }
.inbox-item-time { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* 滚动条 */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ====== 响应式 ====== */
@media (max-width: 768px) {
    .sidebar {
        position: fixed; top: 0; right: 0; bottom: 0; z-index: 100;
    }
    .sidebar:not(.open) {
        clip-path: inset(0 0 0 100%);
    }
    .sidebar.open {
        clip-path: inset(0 0 0 0); opacity: 1;
    }
    .sidebar-overlay.show { display: block; }
    .main-area { width: 100%; }
    .header-toggle { font-size: 20px; }
    .welcome-hints { flex-direction: column; align-items: center; }
    .inbox-content { width: 90vw; }
}

/* ====== 浅色主题 ====== */
body.light {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f0f2f4;
    --bg-hover: #e8eaed;
    --text-primary: #1a1d23;
    --text-secondary: #4a5568;
    --text-muted: #8899aa;
    --border: #e2e5e9;
    --accent: #2563eb;
    --accent-dim: #eff6ff;
    --user-msg: #e8f0fe;
    --shadow: 0 2px 8px rgba(0,0,0,0.06);
}
body.light .msg.user .msg-content { color: #1e3a5f; }
body.light .send-btn { color: #fff; }
body.light .download-btn { background: #eff6ff; }

/* ====== 登录/注册弹窗 ====== */
.auth-modal {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6); z-index: 300;
    display: flex; align-items: center; justify-content: center;
}
.auth-content {
    width: 420px; max-height: 80vh; overflow-y: auto;
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: 14px;
}
.auth-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 16px 20px; border-bottom: 1px solid var(--border);
    font-size: 16px; font-weight: 600;
}
.auth-close { font-size: 20px; cursor: pointer; color: var(--text-muted); }
.auth-close:hover { color: var(--text-primary); }
.auth-body { padding: 20px; }
.auth-error { color: #ef4444; font-size: 13px; margin: 8px 0; }
.auth-ok { color: #22c55e; font-size: 13px; margin: 8px 0; }
.auth-links {
    display: flex; justify-content: space-between; margin-top: 12px;
    font-size: 13px; color: var(--text-muted);
}
.auth-links span { cursor: pointer; color: var(--accent); }
.auth-links span:hover { text-decoration: underline; }
.auth-divider {
    display: flex; align-items: center; margin: 16px 0; color: var(--text-muted); font-size: 12px;
}
.auth-divider::before, .auth-divider::after {
    content: ''; flex: 1; border-top: 1px solid var(--border);
}
.auth-divider span { margin: 0 12px; }
.wechat-btn {
    width: 100%; padding: 10px; border: 1px solid var(--border); border-radius: 8px;
    background: var(--bg-primary); color: var(--text-secondary);
    font-size: 14px; cursor: pointer; transition: all 0.2s;
}
.wechat-btn:hover { background: var(--bg-hover); }
.logout-btn {
    width: 100%; padding: 10px; border: 1px solid rgba(239,68,68,0.3); border-radius: 8px;
    background: transparent; color: #ef4444; font-size: 14px; cursor: pointer;
}
.logout-btn:hover { background: rgba(239,68,68,0.1); }
.avatar-picker {
    display: flex; flex-wrap: wrap; gap: 8px;
}
.avatar-picker span {
    font-size: 28px; cursor: pointer; padding: 4px 6px; border-radius: 8px;
    border: 2px solid transparent; transition: all 0.15s;
}
.avatar-picker span:hover { background: var(--bg-hover); }
.avatar-picker span.selected { border-color: var(--accent); background: var(--accent-dim); }

.delete-account-btn {
    width: 100%; padding: 10px; margin-top: 6px; border: 1px solid rgba(239,68,68,0.3); border-radius: 8px;
    background: transparent; color: #ef4444; font-size: 14px; cursor: pointer;
}
.delete-account-btn:hover { background: rgba(239,68,68,0.1); }