/* ===== 共享设计系统 (OKLCH 色彩空间) ===== */

/* === CSS Reset === */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    /* === 暖调中性色玻璃态 === */
    --glass-03: oklch(0.98 0.008 60 / 0.03);
    --glass-05: oklch(0.98 0.008 60 / 0.05);
    --glass-06: oklch(0.98 0.008 60 / 0.06);
    --glass-08: oklch(0.98 0.008 60 / 0.08);
    --glass-10: oklch(0.98 0.008 60 / 0.1);
    --glass-12: oklch(0.98 0.008 60 / 0.12);
    --glass-15: oklch(0.98 0.008 60 / 0.15);
    --glass-18: oklch(0.98 0.008 60 / 0.18);
    --glass-20: oklch(0.98 0.008 60 / 0.2);
    --glass-22: oklch(0.98 0.008 60 / 0.22);
    --glass-25: oklch(0.98 0.008 60 / 0.25);
    --glass-30: oklch(0.98 0.008 60 / 0.3);
    --glass-35: oklch(0.98 0.008 60 / 0.35);
    --glass-40: oklch(0.98 0.008 60 / 0.4);
    --glass-50: oklch(0.98 0.008 60 / 0.5);
    --glass-55: oklch(0.98 0.008 60 / 0.55);
    --glass-60: oklch(0.98 0.008 60 / 0.6);
    --glass-70: oklch(0.98 0.008 60 / 0.7);
    --glass-75: oklch(0.98 0.008 60 / 0.75);
    --glass-80: oklch(0.98 0.008 60 / 0.8);
    --glass-85: oklch(0.98 0.008 60 / 0.85);
    --glass-90: oklch(0.98 0.008 60 / 0.9);
    --glass-95: oklch(0.98 0.008 60 / 0.95);

    /* === 遮罩层 === */
    --overlay: oklch(0 0 0 / 0.55);
    --overlay-30: oklch(0 0 0 / 0.3);
    --overlay-50: oklch(0 0 0 / 0.5);
    --overlay-60: oklch(0 0 0 / 0.6);

    /* === 8px 基础间距系统 === */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 40px;
    --space-8: 48px;

    /* === 圆角 === */
    --radius-2xs: 3px;
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* === 1.25 modular scale 字体比例 === */
    --text-2xs: 10px;
    --text-xs: 12px;
    --text-2sm: 13px;
    --text-sm: 15px;
    --text-md: 18px;
    --text-2md: 20px;
    --text-lg: 24px;
    --text-xl: 30px;
    --text-2lg: 22px;
    --text-2xl: 36px;
    --text-3xl: 48px;
    --text-4xl: 60px;
    --text-5xl: 72px;
    --text-6xl: 96px;

    /* === 主色 === */
    --text-primary: oklch(0.98 0.008 60);
    --accent-start: oklch(0.7 0.18 175);
    --accent-end: oklch(0.55 0.2 200);
    --header-h: 64px;
    --loading: oklch(0.6 0.1 180);

    /* === 背景渐变 (OKLCH) === */
    --bg-start: oklch(0.18 0.04 280);
    --bg-mid: oklch(0.18 0.04 260);
    --bg-end: oklch(0.2 0.06 260);

    /* === 错误色 === */
    --error: #ff6b6b;
    --error-bg: oklch(0.7 0.2 20 / 0.15);
    --error-border: oklch(0.7 0.2 20 / 0.3);
    --error-bg-hover: oklch(0.7 0.2 20 / 0.25);
}

/* === Body 统一 === */
body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: "DM Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-mid) 50%, var(--bg-end) 100%);
    overflow-x: hidden;
}

main {
    flex: 1;
    width: 100%;
    min-width: 0;
}

/* === Focus 状态 === */
:focus-visible {
    outline: 2px solid var(--accent-start);
    outline-offset: 2px;
}

/* === 跳过导航 === */
.skip-link {
    position: absolute;
    top: -100%;
    left: 8px;
    z-index: 9999;
    padding: 8px 16px;
    background: oklch(0.12 0.02 280);
    color: var(--text-primary);
    border-radius: 0 0 8px 8px;
    font-size: 14px;
    text-decoration: none;
    transition: top .2s;
}
.skip-link:focus {
    top: 0;
}

/* === Main/shell helpers === */
/* main rules are defined above with the body reset */

/* === Footer 统一 === */
footer {
    padding: var(--space-5);
    text-align: center;
    font-size: var(--text-xs);
}
footer a {
    color: var(--glass-40);
    text-decoration: none;
    transition: color .2s;
}
footer a:hover {
    color: var(--glass-60);
}

/* === 动效减少 === */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* === 统一动画 === */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* === Base 按钮系统 === */
.btn {
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--glass-15);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--glass-60);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all .2s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn:hover {
    background: var(--glass-15);
    color: var(--text-primary);
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    border-color: transparent;
    color: white;
    font-weight: 600;
}
.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}
.btn-danger {
    background: oklch(0.3 0.15 30);
    border-color: oklch(0.4 0.15 30);
    color: white;
}
.btn-danger:hover {
    background: oklch(0.35 0.18 30);
    opacity: 0.9;
}

/* === 页面副标题 (统一) === */
.subtitle {
    text-align: center;
    color: var(--glass-50);
    font-size: var(--text-sm);
    margin-bottom: 40px;
}

/* === 登录守卫（统一版） === */
.login-guard {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-mid) 50%, var(--bg-end) 100%);
    z-index: 1000;
    animation: fadeIn .3s ease;
    gap: 16px;
}
.login-guard.hidden { display: none; }
.guard-monogram {
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: 4px;
    background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.guard-tagline {
    font-size: var(--text-sm);
    color: var(--glass-40);
    letter-spacing: 2px;
    margin-top: -8px;
}
.guard-icon { font-size: 48px; }
.guard-title { font-size: 24px; color: var(--text-primary); font-weight: 600; }
.guard-desc { font-size: 16px; color: var(--glass-55); }
.guard-btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    color: white;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    transition: opacity .2s;
}
.guard-btn:hover { opacity: 0.9; }
.guard-refresh {
    font-size: 14px;
    color: var(--glass-40);
    cursor: pointer;
    margin-top: 8px;
}
.guard-refresh:hover { color: var(--glass-60); }

/* 受保护页面内容控制 */
.login-guard.hidden ~ .page-content { display: block; }
.page-content { display: none; }

body.page-game .login-guard.hidden ~ .page-content {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    width: 100%;
}

body.page-game .page-content footer {
    flex-shrink: 0;
}

/* ===== AI 对话页面公共组件 ===== */

/* 顶部导航 */
.ai-header {
    position: sticky;
    top: 0;
    z-index: 100;
    flex-shrink: 0;
    background: oklch(0.12 0.02 280 / 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-10);
}

/* 游戏页：顶栏固定，仅主内容区滚动 */
body.page-game .ai-header {
    position: relative;
    z-index: 100;
    box-shadow: 0 4px 24px oklch(0 0 0 / 0.18);
}

body.page-game > .ai-main,
body.page-game .page-content .ai-main {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

body.page-game > .ai-main:has(.chat-container:not(.hidden)),
body.page-game .page-content .ai-main:has(.chat-container:not(.hidden)) {
    overflow: hidden;
}

body.page-game .chat-container:not(.hidden) {
    flex: 1;
    min-height: 0;
}

body.page-game .chat-container:not(.hidden) .messages {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-gutter: stable;
}

/* 游戏页滚动条：细滑块、透明轨道，随 --scroll-thumb 主题化 */
body.page-game .ai-main,
body.page-game .messages,
body.page-game .status-panel {
    scrollbar-width: thin;
    scrollbar-color: var(--scroll-thumb) var(--scroll-track);
}

body.page-game .ai-main::-webkit-scrollbar,
body.page-game .messages::-webkit-scrollbar,
body.page-game .status-panel::-webkit-scrollbar {
    width: var(--scroll-size);
    height: var(--scroll-size);
}

body.page-game .ai-main::-webkit-scrollbar-track,
body.page-game .messages::-webkit-scrollbar-track,
body.page-game .status-panel::-webkit-scrollbar-track {
    background: var(--scroll-track);
    margin-block: 8px;
}

body.page-game .ai-main::-webkit-scrollbar-thumb,
body.page-game .messages::-webkit-scrollbar-thumb,
body.page-game .status-panel::-webkit-scrollbar-thumb {
    background-color: var(--scroll-thumb);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: content-box;
    min-height: 40px;
}

body.page-game .ai-main::-webkit-scrollbar-thumb:hover,
body.page-game .messages::-webkit-scrollbar-thumb:hover,
body.page-game .status-panel::-webkit-scrollbar-thumb:hover {
    background-color: var(--scroll-thumb-hover);
}

body.page-game > footer {
    flex-shrink: 0;
}
.ai-header-inner {
    max-width: 940px;
    margin: 0 auto;
    padding: var(--space-2) var(--space-5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}
.ai-header-inner--dnd {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
}
.ai-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    width: 100%;
}
.ai-header-row-status {
    justify-content: center;
}
.header-more-menu {
    position: relative;
    display: none;
}
.header-more-menu summary {
    list-style: none;
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    border-radius: 50px;
    border: 1px solid var(--glass-12);
    background: var(--glass-08);
    color: var(--glass-70);
}
.header-more-menu summary::-webkit-details-marker { display: none; }
.header-more-menu[open] summary {
    background: var(--glass-15);
    color: var(--text-primary);
}
.header-more-panel {
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    min-width: 160px;
    padding: var(--space-2);
    background: oklch(0.12 0.02 280 / 0.95);
    border: 1px solid var(--glass-12);
    border-radius: var(--radius-md);
    box-shadow: 0 12px 40px oklch(0 0 0 / 0.4);
    z-index: 110;
}
.header-more-panel .header-model-bar {
    width: 100%;
}
.header-more-panel .header-model-bar select {
    max-width: 100%;
    width: 100%;
}
.header-more-menu:not([open]) .header-more-panel { display: none; }
.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.btn-icon svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}
.ai-header-left {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}
.ai-header-left .icon {
    font-size: var(--text-xl);
    line-height: 1;
}
.ai-header-left h1 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 1px;
}
.ai-header-right {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}
.ai-header-right .btn {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    border-radius: 50px;
    border: 1px solid var(--glass-12);
    background: var(--glass-08);
    color: var(--glass-70);
    transition: all .2s cubic-bezier(0.16, 1, 0.3, 1);
}
.ai-header-right .btn:hover {
    background: var(--glass-15);
    color: var(--text-primary);
    border-color: var(--glass-22);
}

.header-model-bar {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    flex-shrink: 0;
}
.header-model-bar[hidden] {
    display: none !important;
}
.header-model-bar select {
    min-height: 30px;
    max-width: 180px;
    padding: 4px 28px 4px 10px;
    border: 1px solid var(--glass-12);
    border-radius: 50px;
    background: var(--glass-08);
    color: var(--glass-85);
    font-size: var(--text-xs);
    font-family: inherit;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23aaa' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
}
.header-model-bar select:focus {
    outline: 2px solid var(--accent-start);
    outline-offset: 2px;
}
.header-model-bar select:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}
.header-model-bar select option {
    background: oklch(0.14 0.02 280);
    color: var(--text-primary);
}

.ai-header-right .btn-restart {
    color: oklch(0.7 0.15 30 / 0.8);
    border-color: oklch(0.7 0.15 30 / 0.2);
}
.ai-header-right .btn-restart:hover {
    background: oklch(0.7 0.15 30 / 0.12);
    border-color: oklch(0.7 0.15 30 / 0.35);
    color: #ff6b6b;
}
.btn-detail {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    border-radius: 50px;
    border: 1px solid var(--glass-12);
    background: var(--glass-08);
    color: var(--glass-70);
    cursor: pointer;
    transition: all .2s cubic-bezier(0.16, 1, 0.3, 1);
    font-family: inherit;
    white-space: nowrap;
}
.btn-detail:hover {
    background: var(--glass-15);
    color: var(--text-primary);
    border-color: var(--glass-22);
}

/* 主内容区 */
.ai-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 940px;
    margin: 0 auto;
    width: 100%;
    min-height: 0;
}
.ai-footer { border-top: 1px solid var(--glass-10); }

/* 状态面板 */
.status-panel {
    display: none;
    position: fixed;
    left: var(--space-4);
    right: var(--space-4);
    top: calc(var(--header-h, 64px) + var(--space-2));
    z-index: 95;
    max-height: calc(100vh - var(--header-h, 64px) - var(--space-4));
    overflow: auto;
    background: oklch(0.1 0.02 280 / 0.92);
    border: 1px solid var(--glass-12);
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 80px oklch(0 0 0 / 0.4);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    animation: panelSlide .25s cubic-bezier(0.16, 1, 0.3, 1);
}
.status-panel.expanded { display: block; }
.status-panel-content {
    padding: var(--space-4) var(--space-5);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-4);
}
.status-panel-section {
    background: var(--glass-05);
    border: 1px solid var(--glass-08);
    border-radius: var(--radius-sm);
    padding: var(--space-3) var(--space-4);
}
.status-panel-section h4 {
    font-size: var(--text-sm);
    color: var(--glass-60);
    margin-bottom: var(--space-2);
    padding-bottom: var(--space-1);
    border-bottom: 1px solid var(--glass-10);
    font-weight: 600;
}
.status-panel-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.status-panel-section li {
    font-size: var(--text-sm);
    color: var(--glass-75);
    padding: 3px 0;
    line-height: 1.5;
}
.status-panel-section li .item-name { color: var(--text-primary); }
.status-panel-section li .item-detail { color: var(--glass-55); font-size: var(--text-xs); }

/* ===== Rebirth 层级样式 ===== */
.rebirth-hero-name {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}
.rebirth-hero-name strong { font-weight: inherit; }
.rebirth-hero-meta {
    font-size: var(--text-sm);
    color: var(--glass-55);
    line-height: 1.6;
}
.rebirth-companion-row {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--space-2);
    padding: var(--space-1) 0;
    line-height: 1.5;
}
.rebirth-companion-row .companion-name {
    color: var(--text-primary);
    font-weight: 600;
}
.rebirth-companion-row .companion-affection {
    font-variant-numeric: tabular-nums;
    font-weight: 700;
}
.rebirth-companion-row .companion-tags {
    color: var(--glass-50);
    font-size: var(--text-xs);
}
.affection-negative .companion-affection { color: oklch(0.65 0.16 25); }
.affection-neutral .companion-affection { color: var(--glass-55); }
.affection-high .companion-affection { color: oklch(0.72 0.14 150); }

/* ===== DND 队友层级样式 ===== */
.dnd-companion-row {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: var(--space-2) 0;
}
.dnd-companion-main,
.dnd-companion-sub {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--space-2);
}
.dnd-companion-main .companion-name {
    color: var(--text-primary);
    font-weight: 600;
}
.dnd-companion-meta,
.dnd-companion-sub {
    color: var(--glass-55);
    font-size: var(--text-xs);
    line-height: 1.4;
}
.dnd-companion-sub .companion-affection {
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}
.dnd-companion-sub .companion-hp {
    color: var(--glass-70);
}

/* ===== 空状态 ===== */
.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    text-align: center;
}
.empty-state .icon {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
    opacity: 0.5;
}
.empty-state h3 {
    font-size: var(--text-lg);
    color: var(--glass-60);
    margin-bottom: var(--space-2);
}
.empty-state p {
    font-size: var(--text-md);
    color: var(--glass-40);
}

/* 对话区域 */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}
.chat-container.hidden { display: none; }

.chat-composer {
    flex-shrink: 0;
    display: flex;
    align-items: flex-end;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    padding-bottom: max(var(--space-3), env(safe-area-inset-bottom));
    border-top: 1px solid var(--glass-12);
    background: var(--glass-05);
}
.chat-composer .btn {
    flex-shrink: 0;
}
.chat-composer textarea {
    flex: 1;
    max-height: 120px;
    resize: none;
    line-height: 1.5;
}
.chat-composer textarea:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}
body.page-rebirth .chat-composer .btn-primary {
    background: var(--rebirth-accent, var(--accent-start));
}

.messages {
    flex: 1;
    padding: var(--space-4);
    padding-inline: var(--space-4) max(var(--space-2), calc(var(--scroll-size, 5px) + 2px));
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}
.message {
    display: flex;
    max-width: 100%;
    animation: fadeIn .25s cubic-bezier(0.16, 1, 0.3, 1);
}
.message.user {
    justify-content: flex-end;
}
.message.ai {
    justify-content: flex-start;
}
.message-body {
    width: min(85%, 640px);
    padding: 0;
}
.message.user .message-body {
    width: min(78%, 520px);
}
.message.user .message-body,
.message.ai .message-body {
    background: transparent;
    border: 0;
}
.message-content-row {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
}
.message.user .message-content-row {
    flex-direction: row-reverse;
}
.message-avatar {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-md);
    border-radius: 50%;
    background: var(--glass-08);
    border: 1px solid var(--glass-12);
    margin-top: var(--space-1);
}
.message.user .message-avatar {
    background: var(--glass-15);
    border-color: var(--glass-22);
}
.message-content {
    flex: 1;
    min-width: 0;
}
.message-text {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-12);
    background: var(--glass-05);
    color: var(--text-primary);
    font-size: var(--text-md);
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
}
.message.user .message-text {
    background: var(--glass-10);
    border-color: var(--glass-22);
    border-left: 3px solid var(--accent-start);
    border-radius: var(--radius-md) var(--radius-xs) var(--radius-md) var(--radius-md);
}
.message.ai .message-text {
    background: var(--message-ai-bg, var(--glass-05));
    color: var(--message-ai-text, var(--text-primary));
}
.message-time {
    margin-top: var(--space-2);
    font-size: var(--text-xs);
    color: var(--glass-40);
    padding-right: var(--space-1);
}
.message.user .message-time { text-align: right; }
.message.ai .message-time { text-align: left; }

/* 选项按钮 */
.message-options {
    margin-top: var(--space-3);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}
.option-btn {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--glass-12);
    border-radius: var(--radius-sm);
    background: var(--glass-05);
    color: var(--glass-75);
    font-size: var(--text-sm);
    line-height: 1.4;
    cursor: pointer;
    transition: all .2s cubic-bezier(0.16, 1, 0.3, 1);
}
.option-btn:hover {
    background: var(--glass-12);
    color: var(--text-primary);
    border-color: var(--accent-start);
}
.option-btn:active { transform: scale(0.98); }
.option-btn:disabled,
.option-btn.is-used {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
}
.messages.is-sending .option-btn:not(.is-used) {
    pointer-events: none;
    opacity: 0.55;
    cursor: not-allowed;
}
.option-btn.is-selected {
    opacity: 1;
    border-color: var(--accent-start);
    background: var(--glass-12);
    color: var(--text-primary);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: oklch(0.1 0.02 280 / 0.95);
    border: 1px solid var(--glass-15);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-5);
    color: var(--glass-85);
    font-size: var(--text-sm);
    z-index: 10000;
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s, transform .3s cubic-bezier(0.16, 1, 0.3, 1);
    white-space: pre-line;
    text-align: center;
    max-width: min(400px, calc(100vw - 32px));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}
.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

/* Custom confirm */
.custom-confirm-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: oklch(0 0 0 / 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
}
.custom-confirm-box {
    background: oklch(0.12 0.02 280 / 0.95);
    border: 1px solid var(--glass-12);
    border-radius: var(--radius-md);
    padding: var(--space-5) var(--space-6);
    max-width: 320px;
    text-align: center;
    color: var(--text-primary);
    font-family: inherit;
    box-shadow: 0 20px 60px oklch(0 0 0 / 0.5);
    animation: fadeIn .25s cubic-bezier(0.16, 1, 0.3, 1);
}
.custom-confirm-box p {
    margin: 0 0 var(--space-5);
    font-size: var(--text-sm);
    line-height: 1.5;
}
.custom-confirm-actions {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
}
.custom-confirm-actions .btn-confirm-yes {
    padding: 10px 24px;
    border: none;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    color: white;
    font-size: var(--text-sm);
    cursor: pointer;
    font-weight: 600;
    font-family: inherit;
}
.custom-confirm-actions .btn-confirm-no {
    padding: 10px 24px;
    border: 1px solid var(--glass-15);
    border-radius: var(--radius-sm);
    background: var(--glass-08);
    color: var(--glass-70);
    font-size: var(--text-sm);
    cursor: pointer;
    font-family: inherit;
}

/* 打字机加载 */
.typing-indicator {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
}
.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--loading);
    animation: bounce 1.4s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(-8px); opacity: 0.5; }
}

@keyframes panelSlide {
    from { opacity: 0; transform: translateY(-8px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (max-width: 640px) {
    .ai-header-inner {
        padding: var(--space-1) var(--space-3);
        gap: var(--space-2);
    }
    .ai-header-inner:not(.ai-header-inner--dnd) {
        flex-wrap: wrap;
    }
    .ai-header-left h1 { font-size: var(--text-md); }
    .ai-header-right .btn,
    .btn-detail {
        padding: 2px 10px;
        font-size: 10px;
    }
    .header-model-bar select {
        max-width: 120px;
        font-size: 10px;
        padding: 2px 24px 2px 8px;
    }
    .status-panel {
        left: var(--space-2);
        right: var(--space-2);
    }
    .messages { padding: var(--space-3); padding-inline: var(--space-3) max(var(--space-1), calc(var(--scroll-size, 5px) + 2px)); gap: var(--space-2); }
    .message-body { width: 100%; }
    .message-text { padding: var(--space-3); font-size: var(--text-sm); line-height: 1.65; }
    .option-btn { width: 100%; text-align: left; }
    .empty-state { padding: var(--space-5) var(--space-3); }
}

@media (max-width: 400px) {
    .header-model-bar--inline { display: none !important; }
    .header-more-menu { display: block; }
}