/* ============================================
   OfferCabin Design System v2 — Modern Neutral Canvas
   参考 GitHub Primer / Linear / Notion 的配色纪律：
   - 近中性微着色画布（低饱和底色，任何主色放上去都协调）
   - 每个主题一个明确主色（--olive，可被主色调选择器覆盖）
   - 状态/语义色采用主流 Tailwind 色阶（浅色主题 600 / 暗色主题 400）
   - 所有派生色（-dark/-soft/-deep/-glow）用 var(--ink) / var(--paper-light)
     混合派生，明暗主题自动适配，无需逐主题覆写
   - Noto Serif SC for display, Noto Sans SC for body
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@500;700;900&family=Noto+Sans+SC:wght@400;500;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Canvas — 暖调中性白（Ivory） */
    --paper: #f7f6f3;
    --paper-light: #fcfbf9;
    --paper-deep: #eeece6;
    --card: #ffffff;

    /* Ink */
    --ink: #27251f;
    --ink-soft: #6d6a61;
    --ink-faint: #a29d92;
    --ink-ghost: #c9c4b8;

    /* Primary — 主色（默认现代蓝，可被主色调选择器覆盖）
       -dark 混向 ink：浅色主题变深（悬浮态），暗色主题自动变浅 */
    --olive: #2563eb;
    --olive-dark: color-mix(in srgb, var(--olive) 78%, var(--ink));
    --olive-soft: color-mix(in srgb, var(--olive) 12%, var(--paper-light));
    --olive-glow: color-mix(in srgb, var(--olive) 14%, transparent);

    /* Warm secondary — 暖色辅助（悬浮强调、横幅等），同样自动派生 */
    --terra: #e8590c;
    --terra-soft: color-mix(in srgb, var(--terra) 10%, var(--paper-light));
    --terra-deep: color-mix(in srgb, var(--terra) 80%, var(--ink));

    /* Status colors — 主流语义色板（Tailwind 600 系）
       蓝=已投递(进行中,与主色同族) 琥珀=笔试(待办) 紫=面试(活跃)
       翠绿=录用(成功) 红=拒绝 石墨=撤回(归档)
       -deep 混向 ink → 浅色主题深字、暗色主题浅字，自动适配 */
    --st-applied: #2563eb;
    --st-applied-soft: color-mix(in srgb, var(--st-applied) 12%, var(--paper-light));
    --st-applied-deep: color-mix(in srgb, var(--st-applied) 80%, var(--ink));

    --st-assessment: #d97706;
    --st-assessment-soft: color-mix(in srgb, var(--st-assessment) 12%, var(--paper-light));
    --st-assessment-deep: color-mix(in srgb, var(--st-assessment) 80%, var(--ink));

    --st-interview: #7c3aed;
    --st-interview-soft: color-mix(in srgb, var(--st-interview) 11%, var(--paper-light));
    --st-interview-deep: color-mix(in srgb, var(--st-interview) 80%, var(--ink));

    --st-offer: #059669;
    --st-offer-soft: color-mix(in srgb, var(--st-offer) 11%, var(--paper-light));
    --st-offer-deep: color-mix(in srgb, var(--st-offer) 80%, var(--ink));

    --st-rejected: #dc2626;
    --st-rejected-soft: color-mix(in srgb, var(--st-rejected) 10%, var(--paper-light));
    --st-rejected-deep: color-mix(in srgb, var(--st-rejected) 80%, var(--ink));

    --st-withdrawn: #64748b;
    --st-withdrawn-soft: color-mix(in srgb, var(--st-withdrawn) 12%, var(--paper-light));
    --st-withdrawn-deep: color-mix(in srgb, var(--st-withdrawn) 78%, var(--ink));

    /* Lines */
    --line: #e6e3db;
    --line-soft: #edebe4;
    --line-faint: #f2f0ea;

    /* Semantic — 与状态色板对齐（Tailwind 600 系） */
    --danger: #dc2626;
    --success: #059669;
    --warn: #d97706;
    --info: #2563eb;

    /* Typography */
    --font-serif: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
    --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
    --font-mono: 'JetBrains Mono', 'Cascadia Code', Consolas, monospace;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(45, 42, 38, 0.04);
    --shadow-md: 0 4px 16px rgba(45, 42, 38, 0.08);
    --shadow-lg: 0 12px 40px rgba(45, 42, 38, 0.12);
    --shadow-olive: 0 4px 16px color-mix(in srgb, var(--olive) 18%, transparent);

    /* Motion */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background: var(--paper);
    color: var(--ink);
    min-height: 100vh;
    line-height: 1.6;
    /* 氛围：主色光晕 + 暖色微光 + 中心提亮，全部由变量派生 */
    background-image:
        radial-gradient(circle at 15% 8%, var(--olive-glow) 0%, transparent 35%),
        radial-gradient(circle at 85% 92%, color-mix(in srgb, var(--terra) 4%, transparent) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.5) 0%, transparent 70%);
    background-attachment: fixed;
}

/* Decorative grain overlay */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    opacity: 0.4;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.18 0 0 0 0 0.16 0 0 0 0 0.14 0 0 0 0.08 0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
    mix-blend-mode: multiply;
}

/* All content sits above grain */
.navbar, .container, .modal-overlay, .toast-container {
    position: relative;
    z-index: 2;
}

/* ============================================
   NAVBAR — Editorial masthead
   ============================================ */
.navbar {
    background: rgba(254, 253, 249, 0.92);
    backdrop-filter: blur(12px) saturate(120%);
    -webkit-backdrop-filter: blur(12px) saturate(120%);
    border-bottom: 1px solid var(--line);
    padding: 0.9rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -1px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--olive) 30%, var(--olive) 70%, transparent);
    opacity: 0.5;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.nav-brand-mark {
    width: 32px;
    height: 32px;
    background: var(--olive);
    color: var(--paper-light);
    display: grid;
    place-items: center;
    font-family: var(--font-serif);
    font-weight: 900;
    font-size: 1.05rem;
    border-radius: 4px;
    transform: rotate(-3deg);
    box-shadow: 2px 2px 0 var(--olive-dark);
    transition: transform 0.3s var(--ease);
}

.nav-brand:hover .nav-brand-mark {
    transform: rotate(0deg);
}

.nav-brand-text h1 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ink);
    margin: 0;
    letter-spacing: 0.3px;
    line-height: 1.2;
}

.nav-brand-text p {
    font-size: 0.7rem;
    color: var(--ink-faint);
    margin: 0;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 0.3rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--ink-soft);
    font-weight: 500;
    font-size: 0.85rem;
    padding: 0.45rem 0.85rem;
    border-radius: 6px;
    transition: all 0.2s var(--ease);
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.nav-links a:hover {
    color: var(--olive);
    background: var(--olive-glow);
}

.nav-links a.active {
    color: var(--olive-dark);
    background: var(--olive-soft);
    font-weight: 600;
}

.nav-links a.active::before {
    content: '';
    position: absolute;
    left: 0.4rem;
    right: 0.4rem;
    bottom: 0.2rem;
    height: 1px;
    background: var(--olive);
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.8rem 4rem;
}

.container-narrow {
    max-width: 880px;
}

/* Page header — editorial title block */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 1.8rem;
    padding-bottom: 1.3rem;
    border-bottom: 2px solid var(--ink);
    position: relative;
    gap: 1rem;
    flex-wrap: wrap;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 80px;
    height: 2px;
    background: var(--olive);
}

.page-title-group .eyebrow {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--olive);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.3rem;
    font-weight: 500;
}

.page-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 900;
    color: var(--ink);
    margin: 0;
    line-height: 1.15;
    letter-spacing: -0.3px;
}

.page-subtitle {
    font-size: 0.88rem;
    color: var(--ink-soft);
    margin: 0.4rem 0 0;
    max-width: 600px;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    padding: 0.55rem 1.1rem;
    border: 1px solid transparent;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s var(--ease);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.2;
}

.btn-primary {
    background: var(--olive);
    color: var(--paper-light);
    box-shadow: 0 1px 0 var(--olive-dark);
}

.btn-primary:hover {
    background: var(--olive-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow-olive);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-ghost {
    background: transparent;
    color: var(--ink-soft);
    border: 1px solid var(--line);
}

.btn-ghost:hover {
    background: var(--card);
    border-color: var(--olive);
    color: var(--olive);
}

.btn-danger {
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--line);
}

.btn-danger:hover {
    background: color-mix(in srgb, var(--danger) 9%, var(--card));
    border-color: var(--danger);
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.78rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 1.3rem 1.5rem;
    margin-bottom: 0.9rem;
    transition: box-shadow 0.2s var(--ease), transform 0.2s var(--ease);
    position: relative;
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.7rem;
    border-bottom: 1px dashed var(--line-soft);
}

.card-title {
    font-family: var(--font-serif);
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--ink);
    margin: 0;
}

.card-index {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 0.78rem;
    color: var(--ink-faint);
}

/* ============================================
   FORMS
   ============================================ */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-field.full {
    grid-column: 1 / -1;
}

.form-field label {
    font-size: 0.78rem;
    color: var(--ink-soft);
    font-weight: 500;
    letter-spacing: 0.3px;
}

.form-field input,
.form-field select,
.form-field textarea {
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--line);
    border-radius: 6px;
    font-size: 0.88rem;
    font-family: inherit;
    color: var(--ink);
    background: var(--paper-light);
    transition: all 0.2s var(--ease);
    width: 100%;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--olive);
    background: white;
    box-shadow: 0 0 0 3px var(--olive-glow);
}

.form-field textarea {
    resize: vertical;
    min-height: 70px;
}

/* ============================================
   TABS
   ============================================ */
.tabs {
    display: flex;
    gap: 0.2rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--line);
    overflow-x: auto;
}

.tab {
    padding: 0.7rem 1.1rem;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 0.88rem;
    color: var(--ink-soft);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s var(--ease);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.tab:hover {
    color: var(--olive);
}

.tab.active {
    color: var(--olive-dark);
    border-bottom-color: var(--olive);
    font-weight: 600;
}

.tab-badge {
    background: var(--olive-soft);
    color: var(--olive-dark);
    font-size: 0.7rem;
    padding: 0.1rem 0.45rem;
    border-radius: 10px;
    font-weight: 600;
}

/* ============================================
   TOAST
   ============================================ */
.toast-container {
    position: fixed;
    top: 80px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    background: var(--card);
    border: 1px solid var(--line);
    border-left: 3px solid var(--olive);
    padding: 0.75rem 1.1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--ink);
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s var(--ease-out);
    max-width: 340px;
    pointer-events: auto;
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }

@keyframes toastIn {
    from { transform: translateX(30px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ============================================
   LOADING
   ============================================ */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--ink-faint);
}

.spinner {
    display: inline-block;
    width: 32px;
    height: 32px;
    border: 3px solid var(--line);
    border-top-color: var(--olive);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   EMPTY STATES
   ============================================ */
.empty-card {
    text-align: center;
    padding: 2.5rem 1rem;
    color: var(--ink-faint);
    border: 1px dashed var(--line);
    border-radius: 10px;
    background: var(--paper-light);
}

.empty-card p {
    margin: 0.3rem 0;
    font-size: 0.88rem;
}

.empty-card .empty-icon {
    font-size: 1.8rem;
    opacity: 0.5;
}

/* ============================================
   UTILITY
   ============================================ */
.text-mono { font-family: var(--font-mono); }
.text-faint { color: var(--ink-faint); }
.text-soft { color: var(--ink-soft); }
.text-olive { color: var(--olive); }
.text-danger { color: var(--danger); }

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.dot.ok { background: var(--success); box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 15%, transparent); }
.dot.err { background: var(--danger); box-shadow: 0 0 0 3px color-mix(in srgb, var(--danger) 15%, transparent); }
.dot.warn { background: var(--warn); box-shadow: 0 0 0 3px color-mix(in srgb, var(--warn) 15%, transparent); }
.dot.pending { background: var(--ink-faint); }

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

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.panel { animation: fadeIn 0.3s var(--ease); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .navbar {
        padding: 0.8rem 1rem;
        flex-wrap: wrap;
        gap: 0.6rem;
    }
    .nav-links {
        gap: 0.2rem;
        width: 100%;
        overflow-x: auto;
    }
    .nav-links a {
        padding: 0.35rem 0.6rem;
        font-size: 0.8rem;
    }
    .container {
        padding: 1.3rem 1rem 3rem;
    }
    .page-title { font-size: 1.6rem; }
    .form-grid { grid-template-columns: 1fr; }
}

/* Legacy compat for old pages */
.hero {
    text-align: center;
    padding: 3rem 0;
}

.hero h2 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--ink);
}

.hero p {
    font-size: 1.15rem;
    color: var(--ink-soft);
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.2rem;
    margin-top: 2rem;
}

.action-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 1.8rem;
    transition: all 0.3s var(--ease);
    position: relative;
    overflow: hidden;
}

.action-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--olive);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease);
}

.action-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.action-card:hover::before {
    transform: scaleX(1);
}

.action-card h3 {
    font-family: var(--font-serif);
    margin-bottom: 0.6rem;
    font-size: 1.15rem;
    color: var(--ink);
}

.action-card p {
    color: var(--ink-soft);
    margin-bottom: 1.2rem;
    font-size: 0.88rem;
    line-height: 1.6;
}

.footer {
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
    border-top: 1px solid var(--line);
    color: var(--ink-faint);
    font-size: 0.82rem;
    font-family: var(--font-mono);
    letter-spacing: 0.5px;
}

/* ============================================
   MOTION SYSTEM v2 — Editorial Paper Archive
   Choreographed entrances, live indicators,
   count-up numerics, animated bars, refined hover.
   Keeps the calm paper aesthetic; adds intentionality.
   ============================================ */

/* --- Reveal: hidden initial state, .in triggers entrance --- */
.reveal {
    opacity: 0;
    transform: translateY(14px);
    transition:
        opacity 0.6s var(--ease-out),
        transform 0.6s var(--ease-out);
    transition-delay: var(--reveal-delay, 0ms);
    will-change: opacity, transform;
    /* Safety net: if JS never adds .in, reveal after 3s */
    animation: revealSafety 0s 3s forwards;
}
.reveal.in {
    opacity: 1;
    transform: translateY(0);
}
/* Horizontal variant for sidebar-style elements */
.reveal-x {
    opacity: 0;
    transform: translateX(-14px);
    transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
    transition-delay: var(--reveal-delay, 0ms);
    animation: revealSafety 0s 3s forwards;
}
.reveal-x.in { opacity: 1; transform: translateX(0); }
/* Scale variant for hero/feature blocks */
.reveal-scale {
    opacity: 0;
    transform: scale(0.96) translateY(8px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
    transition-delay: var(--reveal-delay, 0ms);
    animation: revealSafety 0s 3s forwards;
}
.reveal-scale.in { opacity: 1; transform: scale(1) translateY(0); }
@keyframes revealSafety {
    to { opacity: 1; transform: none; }
}

/* --- Staggered children: apply to parent, kids animate in sequence --- */
.stagger > * {
    animation: staggerIn 0.55s var(--ease-out) backwards;
}
.stagger > *:nth-child(1) { animation-delay: 0.04s; }
.stagger > *:nth-child(2) { animation-delay: 0.10s; }
.stagger > *:nth-child(3) { animation-delay: 0.16s; }
.stagger > *:nth-child(4) { animation-delay: 0.22s; }
.stagger > *:nth-child(5) { animation-delay: 0.28s; }
.stagger > *:nth-child(6) { animation-delay: 0.34s; }
.stagger > *:nth-child(7) { animation-delay: 0.40s; }
.stagger > *:nth-child(8) { animation-delay: 0.46s; }
.stagger > *:nth-child(n+9) { animation-delay: 0.52s; }
@keyframes staggerIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* --- Pulse: live status indicators breathe --- */
.pulse-dot {
    position: relative;
}
.pulse-dot::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    border: 2px solid currentColor;
    opacity: 0;
    animation: pulseRing 2.2s var(--ease) infinite;
}
.pulse-dot.ok { color: var(--success); }
.pulse-dot.err { color: var(--danger); }
.pulse-dot.warn { color: var(--warn); }
.pulse-dot.pending { color: var(--ink-faint); }
.pulse-dot.pending::after { animation-duration: 3s; opacity: 0.4; }
@keyframes pulseRing {
    0%   { transform: scale(0.6); opacity: 0.8; }
    70%  { transform: scale(1.8); opacity: 0; }
    100% { transform: scale(1.8); opacity: 0; }
}

/* --- Shimmer: moving light sweep along accent bars --- */
.shimmer-line {
    position: relative;
    overflow: hidden;
}
.shimmer-line::after {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    left: -50%;
    width: 50%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 253, 245, 0.55) 50%,
        transparent 100%
    );
    animation: shimmerSweep 3.5s var(--ease) infinite;
    animation-delay: var(--shimmer-delay, 0s);
    pointer-events: none;
}
@keyframes shimmerSweep {
    0%   { left: -50%; }
    60%  { left: 100%; }
    100% { left: 100%; }
}

/* --- Bar fill: animate width from 0 to target --- */
.bar-fill-animate {
    width: 0 !important;
    transition: width 0.9s var(--ease-out);
    transition-delay: var(--fill-delay, 0ms);
}
.bar-fill-animate.filled {
    width: var(--target-width, 0) !important;
}

/* --- Count-up: numerics get a subtle blur settle --- */
.count-up {
    display: inline-block;
    transition: filter 0.3s var(--ease);
}
.count-up.counting {
    filter: blur(0.4px);
}

/* --- Refined card hover: lift + accent edge --- */
.card.lift-hover {
    transition:
        box-shadow 0.3s var(--ease),
        transform 0.3s var(--ease),
        border-color 0.3s var(--ease);
}
.card.lift-hover:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--olive);
}

/* --- Modal: fade + scale entrance (overrides display swap) --- */
.modal-overlay {
    opacity: 0;
    transition: opacity 0.25s var(--ease);
}
.modal-overlay.show {
    opacity: 1;
}
.modal-overlay .modal {
    transform: scale(0.94) translateY(8px);
    opacity: 0;
    transition:
        transform 0.32s var(--ease-out),
        opacity 0.22s var(--ease);
}
.modal-overlay.show .modal {
    transform: scale(1) translateY(0);
    opacity: 1;
}

/* --- Dropdown slide: for custom selects / menus --- */
.slide-down {
    transform-origin: top;
    animation: slideDown 0.22s var(--ease-out);
}
@keyframes slideDown {
    from { opacity: 0; transform: scaleY(0.85) translateY(-4px); }
    to   { opacity: 1; transform: scaleY(1) translateY(0); }
}

/* --- Tab panel transition: directional reveal on switch --- */
.tab-panel-enter {
    animation: tabPanelIn 0.35s var(--ease-out);
}
@keyframes tabPanelIn {
    from { opacity: 0; transform: translateX(8px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* --- Accent underline grow (for nav + section titles) --- */
.underline-grow::after {
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s var(--ease-out);
}
.underline-grow.in::after,
.underline-grow:hover::after {
    transform: scaleX(1);
}

/* --- Focusable ring breathe (subtle, for primary CTAs at rest) --- */
.breathe-ring {
    animation: breatheRing 3s var(--ease) infinite;
}
@keyframes breatheRing {
    0%, 100% { box-shadow: 0 0 0 0 var(--olive-glow); }
    50%      { box-shadow: 0 0 0 6px transparent; }
}

/* --- Spinner upgrade: dual-ring with olive accent --- */
.spinner.dual {
    border-color: var(--line);
    border-top-color: var(--olive);
    border-right-color: var(--olive-soft);
    animation: spin 0.9s linear infinite;
}

/* --- Skeleton shimmer for loading states --- */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--paper-deep) 0%,
        var(--line-soft) 50%,
        var(--paper-deep) 100%
    );
    background-size: 200% 100%;
    animation: skeletonShimmer 1.4s var(--ease) infinite;
    border-radius: 4px;
    color: transparent;
}
@keyframes skeletonShimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* --- Floating ink dot: ambient background motion --- */
.ink-drift {
    position: fixed;
    pointer-events: none;
    z-index: 0;
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.4;
    animation: drift 18s var(--ease) infinite alternate;
}
@keyframes drift {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(40px, -30px) scale(1.15); }
}

/* --- Success burst: tiny radiating checkmark (for confirm actions) --- */
.success-burst {
    animation: successBurst 0.5s var(--ease-out);
}
@keyframes successBurst {
    0%   { transform: scale(0.5); opacity: 0; }
    60%  { transform: scale(1.12); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

/* --- Reduced motion: kill all non-essential animation --- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .reveal, .reveal-x, .reveal-scale {
        opacity: 1 !important;
        transform: none !important;
    }
    .shimmer-line::after,
    .pulse-dot::after,
    .breathe-ring,
    .ink-drift,
    .skeleton {
        animation: none !important;
    }
    .bar-fill-animate {
        width: var(--target-width, 0) !important;
        transition: none !important;
    }
}

/* ============================================
   SPA Shell — App Layout
   ============================================ */

.app-shell {
    display: grid;
    grid-template-rows: 56px 1fr;
    grid-template-columns: 220px 1fr;
    grid-template-areas:
        "topbar topbar"
        "nav    main";
    height: 100vh;
    overflow: hidden;
    background: var(--paper);
}

.app-topbar {
    grid-area: topbar;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.2rem 0 1.5rem;
    background: var(--card);
    border-bottom: 1px solid var(--line);
    z-index: 100;
    backdrop-filter: blur(8px);
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-serif);
    font-weight: 900;
    font-size: 1.1rem;
    color: var(--ink);
    letter-spacing: -0.5px;
}

.topbar-brand .brand-mark {
    width: 28px;
    height: 28px;
    background: var(--olive);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--paper-light);
    font-size: 0.72rem;
    font-family: var(--font-mono);
    font-weight: 700;
    transform: rotate(-3deg);
    box-shadow: var(--shadow-olive);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.topbar-health {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.7rem;
    background: var(--paper-light);
    border: 1px solid var(--line);
    border-radius: 6px;
    font-size: 0.78rem;
    color: var(--ink-soft);
    font-family: var(--font-mono);
}

.health-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse-dot 2s ease-in-out infinite;
}
.health-dot.down { background: var(--danger); }

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.app-nav {
    grid-area: nav;
    background: var(--card);
    border-right: 1px solid var(--line);
    padding: 0.6rem 0.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.55rem 0.8rem;
    border-radius: 7px;
    color: var(--ink-soft);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.18s var(--ease);
    position: relative;
    border: none;
    background: none;
    font-family: inherit;
    text-align: left;
    width: 100%;
}

.nav-item:hover {
    background: var(--olive-soft);
    color: var(--olive-dark);
}

.nav-item.active {
    background: var(--olive);
    color: var(--paper-light);
    font-weight: 600;
    box-shadow: var(--shadow-olive);
}

.nav-item.active .nav-ico {
    color: var(--paper-light);
}

.nav-ico {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ink-faint);
}

.nav-item:hover .nav-ico {
    color: var(--olive);
}

.nav-section-label {
    font-size: 0.68rem;
    font-family: var(--font-mono);
    color: var(--ink-faint);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 0.8rem 0.8rem 0.3rem;
    margin-top: 0.3rem;
}

.nav-spacer { flex: 1; }

/* 侧边栏页脚：合规信息（备案号） */
.nav-legal {
    margin-top: 0.5rem;
    padding: 0.75rem 0.3rem 0.2rem;
    border-top: 1px solid var(--line);
    text-align: center;
}
.nav-legal-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
    font-size: 0.72rem;
    margin-bottom: 0.3rem;
}
.nav-legal-links a { color: var(--ink-faint); text-decoration: none; }
.nav-legal-links a:hover { color: var(--olive); text-decoration: underline; }
.nav-legal-links span { color: var(--ink-ghost); }
.nav-legal-beian {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--ink-ghost);
    text-decoration: none;
    letter-spacing: 0.2px;
}
.nav-legal-beian:hover { color: var(--olive); }

.app-main {
    grid-area: main;
    overflow: hidden;
    position: relative;
    background: var(--paper);
}

#view-mount {
    height: 100%;
    overflow: hidden;
    position: relative;
}

#view-mount > * {
    height: 100%;
}

.view-switching {
    opacity: 0;
    transition: opacity 0.15s var(--ease);
}

.view-error {
    padding: 2rem;
    color: var(--danger);
}

/* ============================================
   Chat View — ChatGPT-style
   ============================================ */

.chat-app {
    display: grid;
    grid-template-columns: 260px 1fr;
    height: 100%;
    overflow: hidden;
}

/* --- Chat Sidebar --- */
.chat-sidebar {
    background: var(--card);
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: 0.8rem;
    border-bottom: 1px solid var(--line-faint);
}

.btn-new-chat {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem;
    background: var(--olive);
    color: var(--paper-light);
    border: none;
    border-radius: 7px;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.18s var(--ease);
    box-shadow: var(--shadow-olive);
}

.btn-new-chat:hover {
    background: var(--olive-dark);
    transform: translateY(-1px);
}

.btn-new-chat .ico {
    font-size: 1.1rem;
    line-height: 1;
}

.sidebar-search {
    padding: 0.6rem 0.8rem;
    border-bottom: 1px solid var(--line-faint);
}

.search-input {
    width: 100%;
    padding: 0.4rem 0.7rem;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--paper-light);
    color: var(--ink);
    font-size: 0.82rem;
    font-family: inherit;
}

.search-input:focus {
    outline: none;
    border-color: var(--olive);
    box-shadow: 0 0 0 2px var(--olive-glow);
}

.sidebar-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.4rem;
}

.session-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.55rem 0.7rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.15s var(--ease);
    margin-bottom: 0.15rem;
}

.session-item:hover {
    background: var(--paper-light);
}

.session-item.active {
    background: var(--olive-soft);
}

.session-item-main {
    flex: 1;
    min-width: 0;
}

.session-item-title {
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.15rem;
}

.session-item.active .session-item-title {
    color: var(--olive-dark);
}

.session-item-preview {
    font-size: 0.75rem;
    color: var(--ink-faint);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.session-item-time {
    font-size: 0.68rem;
    color: var(--ink-ghost);
    font-family: var(--font-mono);
    white-space: nowrap;
    flex-shrink: 0;
    padding-top: 0.15rem;
}

.empty-sessions {
    padding: 2rem 1rem;
    text-align: center;
    color: var(--ink-faint);
    font-size: 0.82rem;
    line-height: 1.6;
}

.empty-sessions span {
    font-size: 0.75rem;
    color: var(--ink-ghost);
}

.sidebar-footer {
    padding: 0.6rem 0.8rem;
    border-top: 1px solid var(--line-faint);
    background: var(--paper-light);
}

.user-card {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--olive);
    color: var(--paper-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.user-info { min-width: 0; }

.user-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-status {
    font-size: 0.7rem;
    color: var(--success);
    font-family: var(--font-mono);
}

/* --- Chat Main --- */
.chat-main {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--paper);
}

.chat-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 1.2rem;
    border-bottom: 1px solid var(--line);
    background: var(--card);
    min-height: 48px;
}

.session-title {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 1rem;
    color: var(--ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.title-edit-input {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 1rem;
    color: var(--ink);
    border: 1px solid var(--olive);
    border-radius: 5px;
    padding: 0.2rem 0.5rem;
    background: var(--paper-light);
    width: 300px;
}

.title-edit-input:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--olive-glow);
}

.toolbar-actions {
    display: flex;
    gap: 0.3rem;
}

.icon-btn {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: none;
    color: var(--ink-faint);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s var(--ease);
}

.icon-btn:hover {
    background: var(--olive-soft);
    color: var(--olive-dark);
}

/* --- Chat Messages --- */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 0;
    scroll-behavior: smooth;
}

.chat-empty {
    max-width: 680px;
    margin: 0 auto;
    padding: 3rem 2rem 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100%;
    justify-content: center;
}

.empty-logo {
    margin-bottom: 1.2rem;
}

.logo-mark {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--olive), var(--olive-dark));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--paper-light);
    font-family: var(--font-serif);
    font-weight: 900;
    font-size: 1.5rem;
    transform: rotate(-4deg);
    box-shadow: var(--shadow-olive);
    animation: logoFloat 4s var(--ease) infinite alternate;
}

@keyframes logoFloat {
    from { transform: rotate(-4deg) translateY(0); }
    to   { transform: rotate(-2deg) translateY(-6px); }
}

.empty-title {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--ink);
    margin-bottom: 0.4rem;
    letter-spacing: -0.5px;
}

.empty-subtitle {
    color: var(--ink-soft);
    font-size: 0.92rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    max-width: 440px;
}

.suggestion-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.7rem;
    width: 100%;
    max-width: 560px;
}

.suggestion-card {
    display: flex;
    align-items: flex-start;
    gap: 0.7rem;
    padding: 0.85rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 9px;
    cursor: pointer;
    transition: all 0.2s var(--ease);
    text-align: left;
    font-family: inherit;
}

.suggestion-card:hover {
    border-color: var(--olive);
    background: var(--paper-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.sug-icon {
    font-size: 1.4rem;
    line-height: 1;
    flex-shrink: 0;
}

.sug-title {
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 0.2rem;
}

.sug-desc {
    font-size: 0.76rem;
    color: var(--ink-faint);
    line-height: 1.4;
}

/* --- Messages --- */
.msg {
    max-width: 820px;
    margin: 0 auto 1rem;
    padding: 0 1.8rem;
    display: flex;
    gap: 0.9rem;
    align-items: flex-start;
}

.msg-enter {
    animation: msgEnter 0.35s var(--ease-out) backwards;
}

@keyframes msgEnter {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.msg-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    font-weight: 700;
    flex-shrink: 0;
    font-family: var(--font-mono);
}

.msg-user .msg-avatar {
    background: var(--terra);
    color: var(--paper-light);
}

.msg-assistant .msg-avatar {
    background: var(--olive);
    color: var(--paper-light);
}

.msg-bubble {
    flex: 1;
    min-width: 0;
    padding-top: 0.25rem;
    line-height: 1.65;
    font-size: 0.9rem;
    color: var(--ink);
    word-wrap: break-word;
}

.msg-user .msg-bubble {
    color: var(--ink);
}

/* --- Typing indicator --- */
.typing-indicator .msg-bubble {
    padding: 0.6rem 0;
}

.typing-dots {
    display: flex;
    gap: 0.3rem;
}

.typing-dots span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--olive);
    animation: typingBounce 1.2s ease-in-out infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.15s; }
.typing-dots span:nth-child(3) { animation-delay: 0.3s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-5px); opacity: 1; }
}

/* --- Tool events --- */
.tool-event {
    max-width: 820px;
    margin: 0 auto 0.6rem;
    padding: 0.4rem 1.8rem;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
}

.tool-icon {
    width: 22px;
    height: 22px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 700;
    flex-shrink: 0;
}

.tool-icon.tool-ok {
    background: var(--olive-soft);
    color: var(--olive-dark);
}

.tool-icon.tool-fail {
    background: var(--terra-soft);
    color: var(--terra-deep);
}

.tool-body {
    flex: 1;
    min-width: 0;
    font-size: 0.8rem;
}

.tool-name {
    font-weight: 600;
    color: var(--ink-soft);
    font-family: var(--font-mono);
    margin-bottom: 0.1rem;
}

.tool-detail {
    color: var(--ink-faint);
    font-size: 0.75rem;
    line-height: 1.5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* --- Confirm card --- */
.confirm-card {
    max-width: 820px;
    margin: 0 auto 1rem;
    padding: 0 1.8rem;
    display: flex;
    gap: 0.7rem;
    align-items: flex-start;
}

.confirm-card > .confirm-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--warn);
    color: var(--paper-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.confirm-body {
    flex: 1;
    background: var(--card);
    border: 1px solid var(--warn);
    border-left: 3px solid var(--warn);
    border-radius: 8px;
    padding: 0.7rem 0.9rem;
}

.confirm-title {
    font-weight: 600;
    color: var(--warn);
    font-size: 0.86rem;
    margin-bottom: 0.3rem;
}

.confirm-message {
    color: var(--ink-soft);
    font-size: 0.82rem;
    line-height: 1.5;
    margin-bottom: 0.6rem;
}

.confirm-actions {
    display: flex;
    gap: 0.4rem;
}

.confirm-result {
    text-align: center;
    padding: 0.5rem;
    color: var(--ink-faint);
    font-size: 0.82rem;
    font-style: italic;
}

/* --- Navigate card --- */
.navigate-card {
    max-width: 820px;
    margin: 0 auto 1rem;
    padding: 0 1.8rem;
    display: flex;
    gap: 0.7rem;
    align-items: center;
}

.navigate-card .nav-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--olive-soft);
    color: var(--olive-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
    flex-shrink: 0;
}

.navigate-card .nav-body {
    flex: 1;
    background: var(--card);
    border: 1px solid var(--olive);
    border-left: 3px solid var(--olive);
    border-radius: 8px;
    padding: 0.6rem 0.9rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
}

.nav-text {
    color: var(--ink-soft);
    font-size: 0.84rem;
}

/* --- Chat input --- */
.chat-input-area {
    padding: 0.7rem 1.8rem 1rem;
    background: var(--paper);
    border-top: 1px solid var(--line);
}

.input-wrapper {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 0.4rem 0.4rem 0.4rem 0.9rem;
    transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.input-wrapper:focus-within {
    border-color: var(--olive);
    box-shadow: 0 0 0 3px var(--olive-glow);
}

.chat-input {
    flex: 1;
    border: none;
    background: none;
    color: var(--ink);
    font-size: 0.92rem;
    font-family: inherit;
    line-height: 1.5;
    resize: none;
    outline: none;
    padding: 0.4rem 0;
    max-height: 200px;
}

.chat-input::placeholder {
    color: var(--ink-ghost);
}

.btn-send {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--olive);
    color: var(--paper-light);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.18s var(--ease);
    flex-shrink: 0;
}

.btn-send:hover:not(:disabled) {
    background: var(--olive-dark);
    transform: scale(1.05);
}

.btn-send:disabled {
    background: var(--line);
    color: var(--ink-faint);
    cursor: not-allowed;
}

.btn-send.streaming {
    background: var(--danger);
}

.input-hint {
    max-width: 820px;
    margin: 0.5rem auto 0;
    text-align: center;
    font-size: 0.72rem;
    color: var(--ink-faint);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}

.input-hint .dot {
    color: var(--ink-ghost);
}

.input-hint .hint-link {
    color: var(--olive);
    text-decoration: none;
}

.input-hint .hint-link:hover {
    text-decoration: underline;
}

/* --- Message error states --- */
.msg-error {
    color: var(--danger);
    font-size: 0.86rem;
}

.msg-aborted {
    color: var(--ink-faint);
    font-style: italic;
    font-size: 0.86rem;
}

/* ============================================
   Markdown content styles
   ============================================ */

.md-content {
    line-height: 1.7;
}

.md-content > *:first-child { margin-top: 0; }
.md-content > *:last-child { margin-bottom: 0; }

.md-h1, .md-h2, .md-h3, .md-h4 {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--ink);
    margin: 1rem 0 0.5rem;
    line-height: 1.3;
}

.md-h1 { font-size: 1.4rem; font-weight: 900; }
.md-h2 { font-size: 1.2rem; }
.md-h3 { font-size: 1.05rem; }
.md-h4 { font-size: 0.95rem; color: var(--olive-dark); }

.md-p {
    margin: 0.5rem 0;
    line-height: 1.65;
}

.md-ul, .md-ol {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.md-ul li, .md-ol li {
    margin: 0.25rem 0;
    line-height: 1.6;
}

.md-ul { list-style: disc; }
.md-ol { list-style: decimal; }

.md-hr {
    border: none;
    border-top: 1px solid var(--line);
    margin: 1rem 0;
}

.md-code-inline {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--paper-deep);
    color: var(--olive-dark);
    padding: 0.1rem 0.35rem;
    border-radius: 3px;
}

.md-code-block {
    background: #1e1b18;
    border-radius: 8px;
    margin: 0.7rem 0;
    overflow: hidden;
    position: relative;
}

.md-code-lang {
    display: block;
    padding: 0.4rem 0.8rem;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: #a8a299;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.md-code-block pre {
    margin: 0;
    padding: 0.8rem;
    overflow-x: auto;
}

.md-code-block code {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: #e8e4d8;
    line-height: 1.5;
    white-space: pre;
}

.md-table-wrap {
    overflow-x: auto;
    margin: 0.7rem 0;
}

.md-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.84rem;
}

.md-table th {
    background: var(--paper-deep);
    color: var(--ink);
    font-weight: 600;
    text-align: left;
    padding: 0.5rem 0.7rem;
    border: 1px solid var(--line);
}

.md-table td {
    padding: 0.4rem 0.7rem;
    border: 1px solid var(--line);
    color: var(--ink-soft);
}

.md-table tr:nth-child(even) td {
    background: var(--paper-light);
}

.md-content strong {
    font-weight: 700;
    color: var(--ink);
}

.md-content em {
    font-style: italic;
    color: var(--olive-dark);
}

/* ============================================
   Generic View Container
   ============================================ */

.view-container {
    height: 100%;
    overflow-y: auto;
    padding: 1.5rem 2rem 3rem;
}

.view-narrow {
    max-width: 960px;
    margin: 0 auto;
}

.view-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--line);
}

.view-header h1 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--ink);
    letter-spacing: -0.3px;
    margin-bottom: 0.3rem;
}

.view-header p {
    color: var(--ink-soft);
    font-size: 0.88rem;
}

.view-header .header-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--olive);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

/* --- 紧凑标题行：眉标 + 标题 + 副标题 放同一行 --- */
.view-title-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}
.view-header-inline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    padding-bottom: 0.75rem;
}
.view-header-inline .view-title-row h1 { margin: 0; }
.view-header-inline .header-eyebrow {
    margin: 0;
    padding: 0.16rem 0.55rem;
    background: var(--olive-soft);
    border-radius: 5px;
    font-size: 0.62rem;
    letter-spacing: 1.5px;
    line-height: 1.4;
}
.view-header-inline .view-subtitle {
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.86rem;
    white-space: nowrap;
}
/* 带搜索框的一行式标题：搜索框吸右，标题在左，副标题紧随标题 */
.view-header-inline.has-search {
    display: flex;
    align-items: center;
    gap: 0.8rem 1rem;
    position: relative;
}
.view-header-inline.has-search .view-title-row { flex-shrink: 0; }
.view-header-inline.has-search .kb-search-wrap {
    margin-left: auto;
    flex-shrink: 0;
}
@media (max-width: 720px) {
    .view-header-inline .view-subtitle { white-space: normal; }
    .view-header-inline.has-search { flex-wrap: wrap; }
    .view-header-inline.has-search .kb-search-wrap { margin-left: 0; flex: 1 1 240px; }
}

/* --- Skeleton loading --- */
.skeleton-row {
    height: 14px;
    background: linear-gradient(90deg, var(--line-soft) 25%, var(--paper-deep) 50%, var(--line-soft) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* --- Empty state card --- */
.empty-card {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--ink-faint);
}

.empty-card .empty-emoji {
    font-size: 2.5rem;
    margin-bottom: 0.8rem;
    display: block;
}

.empty-card h3 {
    font-family: var(--font-serif);
    color: var(--ink-soft);
    font-size: 1.1rem;
    margin-bottom: 0.4rem;
}

.empty-card p {
    font-size: 0.86rem;
    line-height: 1.6;
}

/* --- Responsive --- */
@media (max-width: 900px) {
    .app-shell {
        grid-template-columns: 56px 1fr;
    }
    .app-nav .nav-label { display: none; }
    .nav-item {
        justify-content: center;
        padding: 0.6rem;
    }
    .chat-app {
        grid-template-columns: 1fr;
    }
    .chat-sidebar {
        display: none;
    }
    .suggestion-grid {
        grid-template-columns: 1fr;
    }
    .msg, .tool-event, .confirm-card, .navigate-card {
        padding: 0 0.8rem;
    }
    .chat-input-area {
        padding: 0.6rem 0.8rem 0.8rem;
    }
    .view-container {
        padding: 1rem 0.8rem 2rem;
    }
}

/* ============================================
   THEME SYSTEM — Multiple color palettes
   Switch via [data-theme="xxx"] on <html>.
   Each palette overrides the :root CSS variables.
   Dark themes also get body.is-dark for texture flip.
   ============================================ */

/* --- Theme: ink — 午夜石墨（暗色中性，GitHub Dark 风） --- */
html[data-theme="ink"] {
    --paper: #101216;
    --paper-light: #171a20;
    --paper-deep: #0b0d10;
    --card: #1a1e25;

    --ink: #ececee;
    --ink-soft: #a6abb5;
    --ink-faint: #6d7280;
    --ink-ghost: #333842;

    --olive: #60a5fa;
    --terra: #e3b04b;

    --line: #262b33;
    --line-soft: #20242b;
    --line-faint: #1b1f26;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* --- Theme: forest — 森林（暗色绿调微着色） --- */
html[data-theme="forest"] {
    --paper: #101612;
    --paper-light: #161e18;
    --paper-deep: #0a0f0c;
    --card: #19221b;

    --ink: #e5ebe2;
    --ink-soft: #a3b0a2;
    --ink-faint: #6c7870;
    --ink-ghost: #2d3a31;

    --olive: #4ade80;
    --terra: #e3b04b;

    --line: #243028;
    --line-soft: #1e2921;
    --line-faint: #19231c;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* --- Theme: ocean — 深海（暗色蓝调微着色） --- */
html[data-theme="ocean"] {
    --paper: #0d1420;
    --paper-light: #131c2b;
    --paper-deep: #090e17;
    --card: #16202f;

    --ink: #e3eaf4;
    --ink-soft: #9daabc;
    --ink-faint: #66748c;
    --ink-ghost: #283448;

    --olive: #22d3ee;
    --terra: #e8a35c;

    --line: #1e2a3d;
    --line-soft: #18232f;
    --line-faint: #141d29;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* --- Theme: sunset — 暖沙（浅色暖调微着色） --- */
html[data-theme="sunset"] {
    --paper: #faf6f0;
    --paper-light: #fefbf7;
    --paper-deep: #f1eadd;
    --card: #fffdf9;

    --ink: #35281f;
    --ink-soft: #786558;
    --ink-faint: #ac988a;
    --ink-ghost: #d8c8ba;

    --olive: #e0563f;
    --terra: #b45309;

    --line: #ead9c8;
    --line-soft: #f0e4d5;
    --line-faint: #f4ece0;

    --shadow-sm: 0 1px 3px rgba(53, 40, 31, 0.05);
    --shadow-md: 0 4px 16px rgba(53, 40, 31, 0.1);
    --shadow-lg: 0 12px 40px rgba(53, 40, 31, 0.14);
}

/* --- Theme: mono — 极简黑白（Vercel 式黑主色） --- */
html[data-theme="mono"] {
    --paper: #fafafa;
    --paper-light: #ffffff;
    --paper-deep: #f0f0f0;
    --card: #ffffff;

    --ink: #111111;
    --ink-soft: #525252;
    --ink-faint: #a3a3a3;
    --ink-ghost: #d4d4d4;

    --olive: #171717;
    --terra: #737373;

    --line: #e5e5e5;
    --line-soft: #ececec;
    --line-faint: #f4f4f4;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* --- Dark themes: 状态/语义色提亮（Tailwind 400 系，soft/deep 随基色+ink 自动派生） --- */
html[data-theme="ink"],
html[data-theme="forest"],
html[data-theme="ocean"] {
    --st-applied: #60a5fa;
    --st-assessment: #fbbf24;
    --st-interview: #a78bfa;
    --st-offer: #34d399;
    --st-rejected: #f87171;
    --st-withdrawn: #94a3b8;

    --danger: #f87171;
    --success: #34d399;
    --warn: #fbbf24;
    --info: #60a5fa;
}

/* --- Dark theme texture adjustments --- */
/* Light themes (paper/sunset/mono) keep the default warm grain + multiply blend. */
/* Dark themes (ink/forest/ocean) flip to light grain + screen blend for depth. */
body.is-dark {
    background-image:
        radial-gradient(circle at 15% 8%, var(--olive-glow) 0%, transparent 35%),
        radial-gradient(circle at 85% 92%, rgba(255, 255, 255, 0.02) 0%, transparent 40%);
}
body.is-dark::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.9 0 0 0 0 0.9 0 0 0 0 0.9 0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
    mix-blend-mode: screen;
    opacity: 0.3;
}

/* Code block stays dark in all themes; on mono/paper it's already dark-on-light contrast */
html[data-theme="ink"] .md-code-block,
html[data-theme="forest"] .md-code-block,
html[data-theme="ocean"] .md-code-block {
    background: #0a0d12;
}

/* ============================================
   THEME PICKER — Settings appearance section
   ============================================ */
.theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 0.8rem;
    margin-top: 0.4rem;
}

.theme-card {
    position: relative;
    background: var(--card);
    border: 1.5px solid var(--line);
    border-radius: 10px;
    padding: 0.9rem 0.9rem 0.7rem;
    cursor: pointer;
    transition: all 0.22s var(--ease);
    font-family: inherit;
    text-align: left;
    overflow: hidden;
}
.theme-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--theme-accent, var(--olive));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s var(--ease-out);
}
.theme-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--theme-accent, var(--olive));
}
.theme-card:hover::before { transform: scaleX(1); }

.theme-card.active {
    border-color: var(--theme-accent, var(--olive));
    box-shadow: 0 0 0 2px var(--theme-accent, var(--olive)), var(--shadow-md);
}
.theme-card.active::before { transform: scaleX(1); }

.theme-swatch-row {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 0.6rem;
    height: 28px;
    border-radius: 5px;
    overflow: hidden;
    border: 1px solid var(--line-soft);
}
.theme-swatch {
    flex: 1;
    transition: flex 0.3s var(--ease);
}
.theme-swatch:hover { flex: 2; }

.theme-name {
    font-family: var(--font-serif);
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.3rem;
}
.theme-check {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--theme-accent, var(--olive));
    color: #fff;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    font-weight: 900;
    flex-shrink: 0;
}
.theme-card.active .theme-check { display: flex; }

.theme-desc {
    font-size: 0.72rem;
    color: var(--ink-faint);
    line-height: 1.4;
    font-family: var(--font-mono);
    letter-spacing: 0.2px;
}

/* Density toggle in appearance section */
.appearance-options {
    display: flex;
    gap: 0.6rem;
    margin-top: 1rem;
    padding-top: 0.9rem;
    border-top: 1px dashed var(--line-soft);
    flex-wrap: wrap;
    align-items: center;
}
.appearance-options .opt-label {
    font-size: 0.78rem;
    color: var(--ink-soft);
    font-weight: 500;
    margin-right: 0.2rem;
}
.opt-chip {
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--paper-light);
    color: var(--ink-soft);
    font-size: 0.78rem;
    cursor: pointer;
    transition: all 0.18s var(--ease);
    font-family: inherit;
}
.opt-chip:hover {
    border-color: var(--olive);
    color: var(--olive);
}
.opt-chip.active {
    background: var(--olive);
    color: var(--paper-light);
    border-color: var(--olive);
    font-weight: 600;
}

/* ============================================
   LLM CONFIG FORM — Settings
   ============================================ */
.llm-config-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
    margin-top: 0.4rem;
}
.llm-config-form .full { grid-column: 1 / -1; }

.llm-field {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}
.llm-field label {
    font-size: 0.76rem;
    color: var(--ink-soft);
    font-weight: 500;
    letter-spacing: 0.3px;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.llm-field label .field-tag {
    font-size: 0.64rem;
    font-family: var(--font-mono);
    color: var(--ink-faint);
    background: var(--paper-deep);
    padding: 0.05rem 0.35rem;
    border-radius: 6px;
    font-weight: 500;
}
.llm-field input,
.llm-field select {
    padding: 0.5rem 0.7rem;
    border: 1px solid var(--line);
    border-radius: 6px;
    font-size: 0.84rem;
    font-family: inherit;
    color: var(--ink);
    background: var(--paper-light);
    transition: all 0.2s var(--ease);
    width: 100%;
}
.llm-field input:focus,
.llm-field select:focus {
    outline: none;
    border-color: var(--olive);
    background: var(--card);
    box-shadow: 0 0 0 3px var(--olive-glow);
}
.llm-field input[type="password"] {
    font-family: var(--font-mono);
    letter-spacing: 0.5px;
}
.llm-field .field-hint {
    font-size: 0.7rem;
    color: var(--ink-faint);
    line-height: 1.4;
}
.llm-field .field-hint code {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    background: var(--paper-deep);
    padding: 0.05rem 0.3rem;
    border-radius: 3px;
    color: var(--olive-dark);
}

.llm-config-actions {
    grid-column: 1 / -1;
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-top: 0.3rem;
    flex-wrap: wrap;
}
.llm-save-status {
    font-size: 0.76rem;
    color: var(--ink-faint);
    font-family: var(--font-mono);
}
.llm-save-status.ok { color: var(--success); }
.llm-save-status.err { color: var(--danger); }

.privacy-note {
    margin-top: 0.8rem;
    padding: 0.7rem 0.9rem;
    background: var(--olive-soft);
    border-left: 3px solid var(--olive);
    border-radius: 6px;
    font-size: 0.78rem;
    color: var(--ink-soft);
    line-height: 1.6;
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
}
.privacy-note .lock-ico {
    flex-shrink: 0;
    font-size: 0.9rem;
    line-height: 1.4;
}

/* ============================================
   DENSITY — compact mode tightens spacing
   ============================================ */
body[data-density="compact"] .view-container {
    padding: 1rem 1.4rem 2rem;
}
body[data-density="compact"] .card,
body[data-density="compact"] .settings-section {
    padding: 0.9rem 1rem;
    margin-bottom: 0.6rem;
}
body[data-density="compact"] .page-title {
    font-size: 1.7rem;
}
body[data-density="compact"] .form-grid,
body[data-density="compact"] .llm-config-form {
    gap: 0.6rem;
}
body[data-density="compact"] .theme-grid {
    gap: 0.5rem;
}
body[data-density="compact"] .theme-card {
    padding: 0.7rem;
}
body[data-density="compact"] .theme-swatch-row {
    height: 22px;
}

/* ============================================
   ACCENT PICKER — 主色调选择器
   点击颜色圆点即时切换主色
   ============================================ */
.accent-picker {
    margin-top: 1.1rem;
    padding: 0.9rem 1rem;
    background: var(--paper-light);
    border: 1px solid var(--line-soft);
    border-radius: 8px;
    position: relative;
}
.accent-picker::before {
    content: '';
    position: absolute;
    top: -1px; left: 1.2rem;
    width: 32px; height: 2px;
    background: var(--olive);
    border-radius: 2px;
}

.accent-label {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.7rem;
}
.accent-label .opt-label {
    font-size: 0.82rem;
    color: var(--ink);
    font-weight: 600;
    letter-spacing: 0.3px;
}
.accent-hint {
    font-size: 0.72rem;
    color: var(--ink-faint);
    font-family: var(--font-mono);
}

.accent-dots {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.accent-dot {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid var(--line);
    background: var(--paper-light);
    cursor: pointer;
    padding: 0;
    display: grid;
    place-items: center;
    transition: all 0.22s var(--ease);
    position: relative;
}
.accent-dot:hover {
    border-color: var(--dot-color);
    transform: scale(1.12) translateY(-2px);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--dot-color) 30%, transparent);
}
.accent-dot-inner {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--dot-color);
    transition: all 0.22s var(--ease);
}
.accent-dot.active {
    border-color: var(--dot-color);
    border-width: 3px;
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--dot-color) 25%, transparent);
}
.accent-dot.active .accent-dot-inner {
    width: 14px;
    height: 14px;
}
.accent-dot.active::after {
    content: '';
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 1px dashed color-mix(in srgb, var(--dot-color) 40%, transparent);
    animation: accentRing 2s linear infinite;
}
@keyframes accentRing {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.accent-reset {
    margin-top: 0.6rem;
    padding: 0.3rem 0.7rem;
    background: transparent;
    border: 1px solid var(--line);
    border-radius: 12px;
    color: var(--ink-soft);
    font-size: 0.72rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.18s var(--ease);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}
.accent-reset:hover {
    border-color: var(--olive);
    color: var(--olive);
}

/* ============================================
   LOGIN PAGE — 登录/注册页
   ============================================ */

/* 登录模式：隐藏侧边栏和顶栏，全屏登录页 */
.app-shell.login-mode .app-topbar,
.app-shell.login-mode .app-nav {
    display: none;
}
.app-shell.login-mode .app-main {
    grid-column: 1 / -1;
    grid-row: 1 / -1;
    display: grid;
    place-items: center;
    padding: 1.5rem;
    overflow-y: auto;
}

.login-page {
    width: 100%;
    max-width: 420px;
    animation: loginFadeIn 0.5s var(--ease-out);
}
@keyframes loginFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 2.2rem 2rem 1.8rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}
.login-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--olive), var(--terra));
}

.login-brand {
    text-align: center;
    margin-bottom: 1.8rem;
}
.login-brand-mark {
    width: 56px;
    height: 56px;
    background: var(--olive);
    color: var(--paper-light);
    display: grid;
    place-items: center;
    font-family: var(--font-serif);
    font-weight: 900;
    font-size: 1.5rem;
    border-radius: 12px;
    margin: 0 auto 0.8rem;
    transform: rotate(-3deg);
    box-shadow: 3px 3px 0 var(--olive-dark);
}
.login-title {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--ink);
    margin: 0;
    letter-spacing: -0.5px;
}
.login-subtitle {
    font-size: 0.82rem;
    color: var(--ink-soft);
    margin: 0.3rem 0 0;
    letter-spacing: 0.3px;
}

.login-tabs {
    display: flex;
    gap: 0.2rem;
    margin-bottom: 1.3rem;
    border-bottom: 1px solid var(--line);
}
.login-tab {
    flex: 1;
    padding: 0.6rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--ink-soft);
    cursor: pointer;
    transition: all 0.2s var(--ease);
    margin-bottom: -1px;
}
.login-tab:hover { color: var(--olive); }
.login-tab.active {
    color: var(--olive-dark);
    border-bottom-color: var(--olive);
    font-weight: 600;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}
.login-field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}
.login-field label {
    font-size: 0.8rem;
    color: var(--ink-soft);
    font-weight: 500;
    letter-spacing: 0.3px;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.login-field label .opt {
    font-size: 0.68rem;
    color: var(--ink-faint);
    font-weight: 400;
}
.login-field input {
    padding: 0.65rem 0.8rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--ink);
    background: var(--paper-light);
    transition: all 0.2s var(--ease);
    width: 100%;
}
.login-field input:focus {
    outline: none;
    border-color: var(--olive);
    background: white;
    box-shadow: 0 0 0 3px var(--olive-glow);
}

.login-error {
    background: color-mix(in srgb, var(--danger) 8%, transparent);
    border: 1px solid color-mix(in srgb, var(--danger) 25%, transparent);
    color: var(--danger);
    padding: 0.55rem 0.8rem;
    border-radius: 6px;
    font-size: 0.82rem;
    text-align: center;
}

.login-submit {
    margin-top: 0.4rem;
    padding: 0.7rem;
    background: var(--olive);
    color: var(--paper-light);
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.2s var(--ease);
    box-shadow: 0 2px 0 var(--olive-dark);
}
.login-submit:hover:not(:disabled) {
    background: var(--olive-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow-olive);
}
.login-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.login-footer {
    margin-top: 1.3rem;
    text-align: center;
    font-size: 0.82rem;
    color: var(--ink-soft);
}
.login-switch {
    background: none;
    border: none;
    color: var(--olive);
    font-family: inherit;
    font-size: inherit;
    font-weight: 600;
    cursor: pointer;
    padding: 0 0.2rem;
}
.login-switch:hover {
    text-decoration: underline;
}

/* 顶栏用户信息 */
.topbar-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.3rem 0.25rem 0.35rem;
    background: var(--paper-light);
    border: 1px solid var(--line-soft);
    border-radius: 6px;
    max-width: 220px;
}
.topbar-user .user-avatar {
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--olive);
    color: var(--paper-light);
    display: grid;
    place-items: center;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.topbar-user .user-name {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.topbar-user .logout-btn {
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    color: var(--ink-faint);
}
.topbar-user .logout-btn:hover {
    background: var(--danger);
    color: var(--paper-light);
}