/* =======================================================================
   表格助手 — UI / UX 样式
   主题系统：默认跟随系统（data-theme="auto"），可手动切换 light / dark /
   ocean / forest / sunset 等主题。所有颜色走 CSS 变量，组件不写死颜色。
   ======================================================================= */

/* ---------- 主题：浅色（默认 / auto-light） ---------- */
:root,
:root[data-theme="light"] {
    color-scheme: light;
    --bg: #f4f6fb;
    --bg-accent: #e9efff;
    --panel: #ffffff;
    --panel-soft: #f7f9fd;
    --panel-softer: #fbfcfe;
    --text: #141b2d;
    --text-strong: #0b1120;
    --muted: #647088;
    --muted-soft: #8a93a8;
    --border: #e2e8f3;
    --border-strong: #ccd5e6;
    --primary: #3056f5;
    --primary-dark: #2440d6;
    --primary-soft: #eaefff;
    --primary-softer: #f3f6ff;
    --on-primary: #ffffff;
    --danger: #e11d48;
    --danger-soft: #fdeef1;
    --success: #0f9d6b;
    --success-soft: #e7f7f1;
    --warning: #c2780a;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow: 0 18px 48px -18px rgba(31, 41, 75, 0.22);
    --shadow-lg: 0 28px 70px -24px rgba(31, 41, 75, 0.32);
    --radius: 16px;
    --radius-sm: 11px;
    --ring: 0 0 0 3px color-mix(in srgb, var(--primary) 24%, transparent);
    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --dur-fast: 0.14s;
    --dur: 0.22s;
    --app-bar-height: 68px;
    --layout-gap: 16px;
    --text-xs: 11.5px;
    --text-sm: 12.5px;
    --text-base: 13.5px;
    --text-md: 14px;
    --text-lg: 16px;
}

/* ---------- 主题：深色（默认 auto 在系统暗色下） ---------- */
:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0c111d;
    --bg-accent: #131b30;
    --panel: #151c2c;
    --panel-soft: #1a2233;
    --panel-softer: #1d2638;
    --text: #e7ecf6;
    --text-strong: #f5f8ff;
    --muted: #97a2bb;
    --muted-soft: #6f7a93;
    --border: #283146;
    --border-strong: #34405b;
    --primary: #5b7bff;
    --primary-dark: #748dff;
    --primary-soft: #1e2944;
    --primary-softer: #1a2238;
    --on-primary: #ffffff;
    --danger: #fb6f8a;
    --danger-soft: #2a1922;
    --success: #34d399;
    --success-soft: #122a23;
    --warning: #e0a046;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow: 0 18px 48px -18px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 28px 70px -24px rgba(0, 0, 0, 0.7);
}

@media (prefers-color-scheme: dark) {
    :root[data-theme="auto"] {
        color-scheme: dark;
        --bg: #0c111d;
        --bg-accent: #131b30;
        --panel: #151c2c;
        --panel-soft: #1a2233;
        --panel-softer: #1d2638;
        --text: #e7ecf6;
        --text-strong: #f5f8ff;
        --muted: #97a2bb;
        --muted-soft: #6f7a93;
        --border: #283146;
        --border-strong: #34405b;
        --primary: #5b7bff;
        --primary-dark: #748dff;
        --primary-soft: #1e2944;
        --primary-softer: #1a2238;
        --danger: #fb6f8a;
        --danger-soft: #2a1922;
        --success: #34d399;
        --success-soft: #122a23;
        --warning: #e0a046;
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
        --shadow: 0 18px 48px -18px rgba(0, 0, 0, 0.6);
        --shadow-lg: 0 28px 70px -24px rgba(0, 0, 0, 0.7);
    }
}

/* ---------- 主题：海洋 ---------- */
:root[data-theme="ocean"] {
    color-scheme: dark;
    --bg: #06141f;
    --bg-accent: #0a2030;
    --panel: #0d2230;
    --panel-soft: #102a3a;
    --panel-softer: #133145;
    --text: #d7ecf5;
    --text-strong: #f0fafe;
    --muted: #7fa6b8;
    --muted-soft: #5d8295;
    --border: #1d3e52;
    --border-strong: #2a5066;
    --primary: #2dd4bf;
    --primary-dark: #5eead4;
    --primary-soft: #103a3c;
    --primary-softer: #0d2f34;
    --on-primary: #04201c;
    --danger: #fb7185;
    --danger-soft: #2c1820;
    --success: #34d399;
    --success-soft: #0e2c26;
    --warning: #fbbf24;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow: 0 18px 48px -18px rgba(0, 0, 0, 0.55);
    --shadow-lg: 0 28px 70px -24px rgba(0, 0, 0, 0.65);
}

/* ---------- 主题：森林 ---------- */
:root[data-theme="forest"] {
    color-scheme: light;
    --bg: #f3f7f2;
    --bg-accent: #e3f0e2;
    --panel: #ffffff;
    --panel-soft: #f4f9f3;
    --panel-softer: #fafdfa;
    --text: #1a2b1e;
    --text-strong: #0c1c10;
    --muted: #5d7361;
    --muted-soft: #87998a;
    --border: #dde9dd;
    --border-strong: #c3d6c4;
    --primary: #2f9e44;
    --primary-dark: #237a34;
    --primary-soft: #e6f4e8;
    --primary-softer: #f1faf2;
    --on-primary: #ffffff;
    --danger: #d6336c;
    --danger-soft: #fbe9f0;
    --success: #2b8a3e;
    --success-soft: #e6f4e8;
    --warning: #b8860b;
    --shadow-sm: 0 1px 2px rgba(20, 50, 25, 0.06);
    --shadow: 0 18px 48px -18px rgba(20, 60, 30, 0.2);
    --shadow-lg: 0 28px 70px -24px rgba(20, 60, 30, 0.28);
}

/* ---------- 主题：晚霞 ---------- */
:root[data-theme="sunset"] {
    color-scheme: dark;
    --bg: #1a0f1e;
    --bg-accent: #2a1428;
    --panel: #241326;
    --panel-soft: #2c1830;
    --panel-softer: #321c38;
    --text: #f3dde9;
    --text-strong: #fdeef6;
    --muted: #c49aae;
    --muted-soft: #9a7287;
    --border: #3d2742;
    --border-strong: #4e3354;
    --primary: #fb7185;
    --primary-dark: #fda4af;
    --primary-soft: #3a1f2d;
    --primary-softer: #2f1925;
    --on-primary: #2a0e16;
    --danger: #f43f5e;
    --danger-soft: #361720;
    --success: #34d399;
    --success-soft: #15302a;
    --warning: #fbbf24;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow: 0 18px 48px -18px rgba(0, 0, 0, 0.55);
    --shadow-lg: 0 28px 70px -24px rgba(0, 0, 0, 0.65);
}

/* ---------- 基础 ---------- */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    background:
        radial-gradient(circle at 0 0, var(--bg-accent) 0, transparent 38rem),
        radial-gradient(
            circle at 100% 0,
            color-mix(in srgb, var(--primary) 4%, transparent) 0,
            transparent 28rem
        ),
        var(--bg);
    color: var(--text);
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Microsoft YaHei", sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-feature-settings: "tnum" 1;
    letter-spacing: -0.002em;
    transition:
        background 0.3s var(--ease),
        color 0.3s var(--ease);
}

button,
input,
select,
textarea {
    font: inherit;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

[hidden] {
    display: none !important;
}

.hidden {
    display: none !important;
}

/* ---------- 按钮 ---------- */
button,
.file-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: 9px 15px;
    color: var(--on-primary);
    font-weight: 600;
    background: var(--primary);
    cursor: pointer;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
    transition:
        transform var(--dur-fast) var(--ease-spring),
        box-shadow var(--dur) var(--ease),
        background var(--dur-fast) var(--ease),
        border-color var(--dur-fast) var(--ease),
        color var(--dur-fast) var(--ease);
}

button .icon,
.file-label .icon {
    width: 16px;
    height: 16px;
    flex: 0 0 auto;
}

button:hover,
.file-label:hover {
    transform: translateY(-1.5px);
    background: var(--primary-dark);
    box-shadow: 0 12px 26px -10px
        color-mix(in srgb, var(--primary) 58%, transparent);
}

button:active,
.file-label:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

button:focus-visible,
.file-label:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible,
summary:focus-visible {
    outline: none;
    box-shadow: var(--ring);
}

button.block {
    width: 100%;
}

button.tiny {
    padding: 5px 10px;
    font-size: 12.5px;
}

button.secondary {
    color: var(--primary-dark);
    background: var(--primary-soft);
}

button.secondary:hover {
    color: var(--primary-dark);
    background: var(--primary-softer);
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* 小巧的胶囊型操作按钮（工具栏） */
button.chip {
    min-height: 32px;
    padding: 6px 14px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--muted);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 999px;
    box-shadow: none;
}

button.chip:hover {
    color: var(--primary-dark);
    background: var(--primary-soft);
    border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
    box-shadow: 0 4px 10px -6px color-mix(in srgb, var(--primary) 40%, transparent);
    transform: translateY(-1px);
}

button.chip:active {
    transform: translateY(0);
}

button.danger-chip {
    color: var(--danger);
    background: var(--danger-soft);
    border-color: transparent;
}

button.danger-chip:hover {
    color: #fff;
    background: var(--danger);
    border-color: var(--danger);
}

button.ghost,
.ghost-link {
    color: var(--muted);
    background: transparent;
    border: 1px solid var(--border);
    box-shadow: none;
}

button.ghost:hover,
.ghost-link:hover {
    color: var(--text);
    background: var(--panel-soft);
    border-color: var(--border-strong);
    box-shadow: none;
    transform: none;
}

button.danger {
    color: var(--danger);
    background: transparent;
}

button.danger:hover {
    color: #fff;
    background: var(--danger);
    border-color: var(--danger);
    box-shadow: 0 10px 24px -8px
        color-mix(in srgb, var(--danger) 50%, transparent);
}

button.is-success {
    background: var(--success) !important;
    border-color: var(--success) !important;
    color: #fff !important;
}

button.is-success .icon {
    animation: check-pop 0.4s var(--ease-spring);
}

@keyframes check-pop {
    0% { transform: scale(0.3); opacity: 0; }
    60% { transform: scale(1.15); }
    100% { transform: scale(1); opacity: 1; }
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.45;
    transform: none;
    box-shadow: none;
}

/* 纯图标按钮 */
.icon-btn {
    position: relative;
    width: 40px;
    height: 40px;
    padding: 0;
    color: var(--muted);
    background: transparent;
    border: 1px solid var(--border);
    box-shadow: none;
}

.icon-btn .icon {
    width: 19px;
    height: 19px;
}

.icon-btn {
    transition:
        color var(--dur-fast) var(--ease),
        background var(--dur-fast) var(--ease),
        border-color var(--dur-fast) var(--ease),
        transform var(--dur-fast) var(--ease-spring);
}

.icon-btn:hover {
    color: var(--text-strong);
    background: var(--panel-soft);
    border-color: var(--border-strong);
    box-shadow: none;
    transform: translateY(-1px);
}

.icon-btn:active {
    transform: translateY(0) scale(0.94);
}

.badge {
    position: absolute;
    top: -6px;
    right: -6px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    display: grid;
    place-items: center;
    border-radius: 999px;
    background: var(--primary);
    color: var(--on-primary);
    font-size: 11px;
    font-weight: 700;
    box-shadow: var(--shadow-sm);
}

/* ---------- 顶栏 ---------- */
.app-bar {
    position: sticky;
    top: 0;
    z-index: 30;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px min(4vw, 40px);
    background: color-mix(in srgb, var(--panel) 80%, transparent);
    backdrop-filter: saturate(170%) blur(16px);
    -webkit-backdrop-filter: saturate(170%) blur(16px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 0 color-mix(in srgb, var(--border) 60%, transparent),
        0 8px 24px -20px rgba(15, 23, 42, 0.5);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    flex: 0 0 auto;
    border-radius: 12px;
    background: linear-gradient(
        140deg,
        color-mix(in srgb, var(--primary) 88%, #ffffff),
        var(--primary) 42%,
        color-mix(in srgb, var(--primary) 55%, #8b5cf6)
    );
    color: #fff;
    box-shadow: 0 10px 22px -10px
        color-mix(in srgb, var(--primary) 65%, transparent),
        inset 0 1px 0 rgba(255, 255, 255, 0.35);
    transition: transform var(--dur) var(--ease-spring),
        box-shadow var(--dur) var(--ease);
}

.brand:hover .brand-mark {
    transform: rotate(-4deg) scale(1.05);
    box-shadow: 0 14px 28px -10px
        color-mix(in srgb, var(--primary) 70%, transparent),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.brand-mark .icon {
    width: 22px;
    height: 22px;
}

.brand h1 {
    margin: 0;
    font-size: 19px;
    letter-spacing: -0.01em;
    color: var(--text-strong);
}

.app-bar-stats {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px;
    min-width: 0;
    overflow: hidden;
}

.app-bar-stats.is-placeholder .stat-pill {
    opacity: 0.85;
}

.stat-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    max-width: 100%;
    padding: 5px 11px;
    font-variant-numeric: tabular-nums;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--panel-soft);
    color: var(--muted);
    font-size: var(--text-sm);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.stat-pill.muted {
    border-style: dashed;
    background: transparent;
}

.stat-pill strong {
    color: var(--text-strong);
    font-weight: 700;
    max-width: 9rem;
    overflow: hidden;
    text-overflow: ellipsis;
}

.stat-pill .num {
    color: var(--primary);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.app-bar-actions {
    position: relative;
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ---------- 弹出菜单（主题快速切换） ---------- */
.menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: 40;
    min-width: 180px;
    padding: 6px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.menu button {
    justify-content: flex-start;
    gap: 10px;
    width: 100%;
    padding: 8px 10px;
    color: var(--text);
    background: transparent;
    border: none;
    box-shadow: none;
    font-weight: 500;
    border-radius: 8px;
}

.menu button:hover {
    background: var(--panel-soft);
    color: var(--text-strong);
    transform: none;
    box-shadow: none;
}

.menu button.active {
    color: var(--primary);
    font-weight: 700;
}

.menu .swatch {
    width: 16px;
    height: 16px;
    border-radius: 5px;
    border: 1px solid var(--border-strong);
    flex: 0 0 auto;
}

.menu button .check {
    margin-left: auto;
    width: 15px;
    height: 15px;
    opacity: 0;
}

.menu button.active .check {
    opacity: 1;
}

/* ---------- 工作流 Tab（窄屏） ---------- */
.workflow-tabs {
    display: none;
    flex: 0 0 auto;
    gap: 8px;
    padding: 10px min(4vw, 40px) 0;
    margin: 0;
    list-style: none;
}

.workflow-tab {
    flex: 1 1 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-height: 40px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel-soft);
    color: var(--muted);
    font-size: var(--text-sm);
    font-weight: 600;
    box-shadow: none;
    cursor: pointer;
    transition:
        background 0.15s var(--ease),
        border-color 0.15s var(--ease),
        color 0.15s var(--ease);
}

.workflow-tab:hover {
    color: var(--text);
    background: var(--panel);
    transform: none;
    box-shadow: none;
}

.workflow-tab.active {
    color: var(--primary);
    border-color: color-mix(in srgb, var(--primary) 35%, var(--border));
    background: var(--primary-softer);
    box-shadow: var(--shadow-sm);
}

.workflow-tab .step {
    width: 20px;
    height: 20px;
    font-size: 11px;
}

/* ---------- 布局 ---------- */
.layout {
    flex: 1 1 auto;
    display: grid;
    grid-template-columns: minmax(280px, 340px) minmax(420px, 1fr) minmax(
            340px,
            460px
        );
    grid-template-rows: minmax(0, 1fr);
    align-items: stretch;
    gap: var(--layout-gap);
    min-height: 0;
    padding: 18px min(4vw, 40px) 18px;
}

.panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--panel);
    box-shadow: var(--shadow-sm);
    padding: 18px 20px 20px;
}

.input-panel {
    background: color-mix(in srgb, var(--panel) 92%, var(--panel-soft));
}

.workspace-panel {
    background: var(--panel);
}

.output-panel {
    background: color-mix(in srgb, var(--panel) 94%, var(--primary-softer));
}

.panel-head {
    flex: 0 0 auto;
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.panel-body,
.workspace-scroll,
.output-body {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.input-panel .panel-body {
    overflow: auto;
}

.paste-area {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.workspace-panel > .toolbar,
.workspace-panel > .column-panel {
    flex: 0 0 auto;
}

.output-controls {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.output-body {
    flex: 1 1 auto;
}

.output-panel > .status-message {
    flex: 0 0 auto;
}

.panel-head.split {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.panel-head h2 {
    display: flex;
    align-items: center;
    gap: 9px;
    margin: 0;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text-strong);
}

.step {
    display: grid;
    place-items: center;
    width: 24px;
    height: 24px;
    flex: 0 0 auto;
    border-radius: 8px;
    background: linear-gradient(150deg,
        color-mix(in srgb, var(--primary) 20%, var(--primary-soft)),
        var(--primary-soft));
    color: var(--primary-dark);
    font-size: 12.5px;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--primary) 14%, transparent);
}

h3 {
    margin-bottom: 0;
    font-size: 14px;
    color: var(--text-strong);
}

.field-label {
    color: var(--text);
    font-weight: 600;
    font-size: 13px;
}

/* ---------- 输入面板 ---------- */
.input-panel .panel-body {
    gap: 14px;
}

#fileInput {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.paste-area {
    margin-bottom: 0;
}

.paste-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.paste-head .field-label {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.paste-head .field-label .icon {
    width: 15px;
    height: 15px;
    color: var(--muted-soft);
}

/* 输入区分隔线“或粘贴表格内容” */
.input-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 2px 0;
    color: var(--muted-soft);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.input-divider::before,
.input-divider::after {
    content: "";
    flex: 1 1 auto;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--border) 40%,
        var(--border)
    );
}

.input-divider::after {
    background: linear-gradient(
        90deg,
        var(--border),
        var(--border) 60%,
        transparent
    );
}

.input-divider span {
    flex: 0 0 auto;
}

.field-block {
    display: grid;
    gap: 8px;
    margin-bottom: 0;
}

/* 折叠的高级设置 */
.advanced {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel-soft);
    padding: 0;
    margin-bottom: 0;
}

.advanced summary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 11px 14px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    color: var(--muted);
    list-style: none;
    user-select: none;
}

.advanced summary::-webkit-details-marker {
    display: none;
}

.advanced summary::before {
    content: "";
    width: 14px;
    height: 14px;
    flex: 0 0 auto;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m9 18 6-6-6-6'/%3E%3C/svg%3E")
        no-repeat center / contain;
    transition: transform 0.2s var(--ease);
}

.advanced[open] summary::before {
    transform: rotate(90deg);
}

.advanced .inline-control {
    padding: 0 14px 14px;
}

.inline-control {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
}

/* ---------- 表单控件 ---------- */
input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel);
    color: var(--text);
    outline: none;
    transition:
        border-color 0.15s var(--ease),
        box-shadow 0.15s var(--ease);
}

input:hover,
select:hover,
textarea:hover {
    border-color: var(--border-strong);
}

input,
select {
    min-height: 40px;
    padding: 8px 11px;
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 11px center;
    background-size: 16px;
    padding-right: 34px;
}

input[type="checkbox"] {
    width: 17px;
    height: 17px;
    flex: 0 0 auto;
    min-height: auto;
    accent-color: var(--primary);
    cursor: pointer;
}

textarea {
    resize: vertical;
    padding: 12px;
    line-height: 1.55;
}

#pasteInput {
    flex: 1 1 auto;
    min-height: 8rem;
    font-family:
        "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: var(--text-base);
    margin-bottom: 10px;
}

#outputText {
    flex: 1 1 auto;
    width: 100%;
    height: 100%;
    min-height: 12rem;
    white-space: pre;
    overflow: auto;
    font-family:
        "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: var(--text-base);
    line-height: 1.55;
    background: var(--panel-softer);
}

/* ---------- 工具栏 / 筛选 ---------- */
.toolbar {
    display: grid;
    gap: 12px;
    margin-bottom: 12px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel-soft);
}

.search-box {
    position: relative;
    display: block;
}

.search-box input[type="search"] {
    padding-left: 38px;
    background: var(--panel);
}

.search-box .search-icon {
    position: absolute;
    left: 13px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--muted-soft);
    pointer-events: none;
}

.search-box.compact input[type="search"] {
    min-height: 38px;
    font-size: 13px;
}

.toolbar-buttons {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 10px;
}

.toolbar-group {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 7px;
}

.toolbar-group + .toolbar-group {
    padding-left: 10px;
    border-left: 1px solid var(--border);
}

.toolbar-group-danger {
    margin-left: auto;
    padding-left: 10px;
    border-left: 1px solid var(--border);
}

@media (max-width: 720px) {
    .toolbar-group-danger {
        margin-left: 0;
        flex-basis: 100%;
        padding-left: 0;
        border-left: none;
        padding-top: 6px;
        border-top: 1px solid var(--border);
    }
}

/* ---------- 列面板 ---------- */
.column-panel {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel-soft);
    padding: 13px 15px;
    margin-bottom: 14px;
}

.column-panel summary {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 700;
    font-size: 13px;
    color: var(--text-strong);
    list-style: none;
    user-select: none;
}

.column-panel summary::-webkit-details-marker {
    display: none;
}

.column-panel summary::before {
    content: "";
    width: 15px;
    height: 15px;
    flex: 0 0 auto;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m9 18 6-6-6-6'/%3E%3C/svg%3E")
        no-repeat center / contain;
    transition: transform 0.2s var(--ease);
}

.column-panel[open] summary::before {
    transform: rotate(90deg);
}

.summary-meta {
    margin-left: auto;
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
}

.column-actions {
    display: flex;
    gap: 7px;
    margin: 12px 0;
}

.column-controls {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 9px;
}

.column-item {
    display: grid;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel);
    padding: 10px;
    transition:
        border-color 0.15s var(--ease),
        box-shadow 0.15s var(--ease);
}

.column-item:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-sm);
}

.column-item:has(input[type="checkbox"]:checked) {
    border-color: var(--primary);
    background: var(--primary-softer);
}

.checkbox-line {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    cursor: pointer;
}

.checkbox-line span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 500;
}

.column-item input[type="search"] {
    min-height: 32px;
    font-size: 12.5px;
}

/* ---------- 表格 ---------- */
.table-note {
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 12.5px;
    line-height: 1.5;
}

.workspace-scroll {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.table-wrap {
    flex: 1 1 auto;
    min-height: 10rem;
    overflow: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel);
    box-shadow: var(--shadow-sm);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

th,
td {
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
    padding: 9px 11px;
    text-align: left;
    vertical-align: top;
    min-width: 120px;
    max-width: 280px;
    overflow-wrap: anywhere;
}

th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--panel-soft);
    font-weight: 700;
    color: var(--text-strong);
    white-space: nowrap;
}

th:first-child,
td:first-child {
    position: sticky;
    left: 0;
    z-index: 1;
    min-width: 72px;
    background: var(--panel);
}

th:first-child {
    z-index: 3;
    background: var(--primary-softer);
}

tbody tr {
    transition: background var(--dur-fast) var(--ease);
}

tbody tr:has(input[type="checkbox"]:checked) td:first-child {
    box-shadow: inset 3px 0 0 var(--primary);
}

tbody tr:hover td {
    background: var(--primary-softer);
}

tbody tr:has(input[type="checkbox"]:checked) td {
    background: var(--primary-soft);
}

tbody tr:has(input[type="checkbox"]:checked) td:first-child {
    background: var(--primary-soft);
}

.row-num {
    color: var(--muted-soft);
    font-variant-numeric: tabular-nums;
    font-size: 12px;
}

.preview-cell {
    min-width: 160px;
}

.cell-shell {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    min-width: 0;
}

.cell-shell.is-expanded {
    display: block;
}

.cell-content {
    min-width: 0;
    line-height: 1.55;
}

.cell-content.is-collapsed {
    flex: 1 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.cell-expand-btn {
    flex: 0 0 auto;
    min-height: auto;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    line-height: 1.55;
    box-shadow: none;
}

.cell-expand-btn:hover,
.cell-expand-btn:focus-visible {
    color: var(--primary-strong);
    text-decoration: underline;
    background: transparent;
    box-shadow: none;
}

.cell-shell.is-expanded .cell-expand-btn {
    margin-top: 6px;
}

.cell-markdown {
    max-height: 320px;
    overflow: auto;
    white-space: normal;
}

.cell-markdown p,
.cell-markdown ul,
.cell-markdown ol,
.cell-markdown pre,
.cell-markdown h3,
.cell-markdown h4,
.cell-markdown h5 {
    margin: 0 0 8px;
}

.cell-markdown p:last-child,
.cell-markdown ul:last-child,
.cell-markdown ol:last-child,
.cell-markdown pre:last-child,
.cell-markdown h3:last-child,
.cell-markdown h4:last-child,
.cell-markdown h5:last-child {
    margin-bottom: 0;
}

.cell-markdown h3,
.cell-markdown h4,
.cell-markdown h5 {
    color: var(--text-strong);
    font-size: 13px;
    line-height: 1.45;
}

.cell-markdown ul,
.cell-markdown ol {
    padding-left: 18px;
}

.cell-markdown code {
    padding: 1px 4px;
    border-radius: 4px;
    background: var(--panel-soft);
    color: var(--text-strong);
    font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
    font-size: 12px;
}

.cell-markdown pre {
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel-soft);
    overflow: auto;
}

.cell-markdown pre code {
    padding: 0;
    background: transparent;
}

.cell-markdown a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.empty-state {
    color: var(--muted);
    font-size: var(--text-base);
}

.empty-state-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 20px 16px;
    text-align: center;
}

.empty-state-icon {
    width: 36px;
    height: 36px;
    color: var(--muted-soft);
    opacity: 0.9;
}

.empty-state-title {
    margin: 4px 0 0;
    font-size: var(--text-md);
    font-weight: 700;
    color: var(--text-strong);
}

.empty-state-desc {
    margin: 0;
    max-width: 22rem;
    font-size: var(--text-sm);
    line-height: 1.5;
    color: var(--muted);
}

.empty-state-cta {
    margin-top: 8px;
}

.column-controls.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 6rem;
}

td.empty-state {
    padding: 0;
    text-align: center;
    vertical-align: middle;
    border: none;
}

td.empty-state .empty-state-block {
    min-height: 12rem;
}

/* ---------- 输出面板 ---------- */
.output-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
}

.output-toolbar button:not(.icon-btn) {
    padding: 8px 14px;
}

.segmented {
    display: flex;
    flex-wrap: nowrap;
    gap: 5px;
    padding: 5px;
    border: 1px solid var(--border);
    border-radius: 13px;
    background: var(--panel-soft);
    margin-bottom: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}

.segmented button {
    flex: 0 0 auto;
    white-space: nowrap;
    min-width: 64px;
    padding: 8px 10px;
    border-radius: 9px;
    background: transparent;
    color: var(--muted);
    font-size: 12.5px;
    font-weight: 600;
    box-shadow: none;
    border: 1px solid transparent;
}

.segmented button:hover {
    background: var(--panel);
    color: var(--text);
    transform: none;
    box-shadow: none;
}

.segmented button {
    transition:
        background var(--dur-fast) var(--ease),
        color var(--dur-fast) var(--ease),
        border-color var(--dur-fast) var(--ease),
        box-shadow var(--dur-fast) var(--ease);
}

.segmented button.active {
    background: var(--panel);
    color: var(--primary);
    border-color: var(--border);
    box-shadow: var(--shadow-sm), 0 0 0 1px color-mix(in srgb, var(--primary) 12%, transparent);
}

.output-layout-segmented {
    max-width: 100%;
}

.output-layout-hint {
    margin: 0;
    font-size: 12px;
    line-height: 1.45;
    color: var(--muted);
}

.output-body.is-per-row #outputText {
    display: none;
}

.output-body:not(.is-per-row) .row-output-list {
    display: none;
}

.row-output-list {
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 2px 0;
}

.row-output-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel-soft);
    padding: 10px 12px;
    box-shadow: var(--shadow-sm);
}

.row-output-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 8px;
}

.row-output-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.row-output-badge {
    font-size: 12px;
    font-weight: 700;
    color: var(--primary-dark);
}

.row-output-summary {
    font-size: 12px;
    color: var(--muted);
    line-height: 1.4;
    word-break: break-word;
}

.row-output-json {
    margin: 0;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--panel);
    font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
    font-size: 12px;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 220px;
    overflow: auto;
}

.row-output-copy.is-success {
    border-color: var(--success);
    color: var(--success);
}

.output-meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 0;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel-soft);
}

.export-meta {
    color: var(--muted);
    font-size: 12.5px;
    line-height: 1.5;
}

.export-meta strong,
.export-meta .num {
    color: var(--text-strong);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.option-inline {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    flex: 0 0 auto;
    color: var(--text);
    font-size: 12.5px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
}

/* ---------- 状态条 ---------- */
.status-message {
    display: flex;
    align-items: center;
    gap: 7px;
    min-height: 20px;
    margin-top: 12px;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    background: var(--panel-soft);
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: 13px;
}

.status-message .icon {
    width: 15px;
    height: 15px;
    flex: 0 0 auto;
}

.status-message.ok {
    color: var(--success);
    background: var(--success-soft);
    border-color: transparent;
}

.status-message.is-busy .icon {
    display: none;
}

.status-message.is-busy .status-text {
    opacity: 0.85;
}

.status-message.is-busy::before {
    content: "";
    width: 14px;
    height: 14px;
    flex: 0 0 auto;
    border: 2px solid var(--border-strong);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: status-spin 0.7s linear infinite;
}

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

.status-message.error {
    color: var(--danger);
    background: var(--danger-soft);
    border-color: transparent;
}

/* ---------- 抽屉（历史 / 设置） ---------- */
.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 60;
}

.drawer-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(8, 12, 24, 0.45);
    backdrop-filter: blur(2px);
    opacity: 0;
    animation: fadeIn 0.2s var(--ease) forwards;
}

.drawer {
    position: absolute;
    top: 0;
    right: 0;
    height: 100%;
    width: min(460px, 92vw);
    display: flex;
    flex-direction: column;
    background: var(--panel);
    border-left: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    animation: slideIn 0.26s var(--ease) forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    to {
        transform: translateX(0);
    }
}

.drawer-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 20px 22px 16px;
    border-bottom: 1px solid var(--border);
}

.drawer-head h2 {
    margin: 0 0 4px;
    font-size: 18px;
    color: var(--text-strong);
}

.drawer-sub {
    margin: 0;
    color: var(--muted);
    font-size: 12.5px;
    line-height: 1.5;
    max-width: 38ch;
}

.drawer-search {
    padding: 14px 22px 10px;
    border-bottom: 1px solid var(--border);
}

.drawer-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 22px;
    border-bottom: 1px solid var(--border);
    background: var(--panel-soft);
}

.select-all-line {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
}

.drawer-toolbar-actions {
    display: flex;
    gap: 8px;
}

/* ---------- 历史列表 ---------- */
.history-list {
    flex: 1 1 auto;
    overflow: auto;
    display: grid;
    align-content: start;
    gap: 9px;
    padding: 16px 22px 22px;
}

.history-list.empty-state {
    place-content: center;
    text-align: center;
    color: var(--muted);
    padding: 32px 22px;
}

.history-list.empty-state .empty-state-block {
    margin: 0 auto;
}

.history-item {
    display: flex;
    align-items: flex-start;
    gap: 11px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel);
    padding: 13px;
    transition:
        border-color 0.15s var(--ease),
        box-shadow 0.15s var(--ease),
        background 0.15s var(--ease);
}

.history-item:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-sm);
}

.history-item.selected {
    border-color: var(--primary);
    background: var(--primary-softer);
}

.history-item input[type="checkbox"] {
    margin-top: 2px;
}

.history-item-body {
    flex: 1 1 auto;
    min-width: 0;
}

.history-item-title {
    display: flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 4px;
    font-weight: 700;
    color: var(--text-strong);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-item-title .icon {
    width: 15px;
    height: 15px;
    flex: 0 0 auto;
    color: var(--success);
}

.history-item-meta {
    margin-bottom: 10px;
    color: var(--muted);
    font-size: 12px;
}

.history-actions {
    display: flex;
    gap: 8px;
}

.history-actions button {
    padding: 5px 11px;
    font-size: 12.5px;
}

/* ---------- 设置面板 ---------- */
.settings-body {
    flex: 1 1 auto;
    overflow: auto;
    padding: 20px 22px 28px;
    display: grid;
    gap: 24px;
    align-content: start;
}

.settings-group h3 {
    margin: 0 0 12px;
    font-size: 13px;
    color: var(--text-strong);
}

.theme-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 9px;
}

.theme-card {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 11px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel-soft);
    color: var(--text);
    font-weight: 600;
    font-size: 13px;
    box-shadow: none;
    justify-content: flex-start;
}

.theme-card:hover {
    border-color: var(--border-strong);
    background: var(--panel-soft);
    color: var(--text-strong);
    transform: none;
    box-shadow: var(--shadow-sm);
}

.theme-card.active {
    border-color: var(--primary);
    box-shadow: var(--ring);
    color: var(--text-strong);
}

.theme-swatch {
    display: inline-flex;
    width: 26px;
    height: 26px;
    border-radius: 8px;
    border: 1px solid var(--border-strong);
    overflow: hidden;
    flex: 0 0 auto;
}

.theme-swatch i {
    display: block;
    flex: 1;
    height: 100%;
}

.help-steps {
    margin: 0;
    padding-left: 20px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.7;
}

.ghost-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-height: 42px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    padding: 0 14px;
    text-decoration: none;
}

.block {
    width: 100%;
}

/* ---------- Toast ---------- */
.toast-stack {
    position: fixed;
    z-index: 80;
    right: 24px;
    bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 220px;
    max-width: 360px;
    padding: 12px 16px;
    border-radius: 13px;
    background: var(--panel);
    color: var(--text);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    font-size: 13.5px;
    font-weight: 500;
    pointer-events: auto;
    transform: translateY(14px) scale(0.96);
    opacity: 0;
    transition:
        transform 0.32s var(--ease-out),
        opacity 0.32s var(--ease-out);
}

.toast.show {
    transform: translateY(0) scale(1);
    opacity: 1;
}

.toast .icon {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
}

.toast.ok {
    border-left: 4px solid var(--success);
}

.toast.ok .icon {
    color: var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

.toast.error .icon {
    color: var(--danger);
}

.toast.info {
    border-left: 4px solid var(--primary);
}

.toast.info .icon {
    color: var(--primary);
}

/* ---------- 快捷键徽标 ---------- */
kbd,
.kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    padding: 1px 6px;
    border-radius: 6px;
    border: 1px solid var(--border-strong);
    border-bottom-width: 2px;
    background: var(--panel-soft);
    color: var(--muted);
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 11px;
    font-weight: 600;
    line-height: 1.6;
}

.shortcut-hint {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 14px;
    align-items: center;
    margin-top: 6px;
    font-size: 12px;
    color: var(--muted);
}

.shortcut-hint .pair {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

/* ---------- 工具类 ---------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ---------- 滚动条 ---------- */
.table-wrap::-webkit-scrollbar,
.history-list::-webkit-scrollbar,
.settings-body::-webkit-scrollbar,
#outputText::-webkit-scrollbar,
textarea::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

.table-wrap::-webkit-scrollbar-thumb,
.history-list::-webkit-scrollbar-thumb,
.settings-body::-webkit-scrollbar-thumb,
#outputText::-webkit-scrollbar-thumb,
textarea::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

.table-wrap::-webkit-scrollbar-thumb:hover,
.history-list::-webkit-scrollbar-thumb:hover,
#outputText::-webkit-scrollbar-thumb:hover {
    background: var(--muted-soft);
    background-clip: padding-box;
    border: 2px solid transparent;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 1181px) {
    .layout > .panel {
        display: flex;
    }
}

@media (max-width: 1180px) {
    .workflow-tabs {
        display: flex;
    }

    .layout {
        grid-template-columns: 1fr;
        grid-template-rows: minmax(0, 1fr);
    }

    .layout > .panel {
        display: none;
        grid-column: 1;
        grid-row: 1;
    }

    .layout > .panel.panel-active {
        display: flex;
    }
}

@media (max-width: 720px) {
    .app-bar {
        gap: 10px;
        padding: 12px 16px;
    }

    .app-bar-stats {
        display: none;
    }

    .workflow-tabs {
        padding: 8px 16px 0;
    }

    .layout {
        padding: 12px 16px 16px;
    }

    .toolbar {
        grid-template-columns: 1fr;
    }

    .theme-options {
        grid-template-columns: 1fr;
    }

    .toast-stack {
        right: 12px;
        left: 12px;
        bottom: 12px;
    }

    .toast {
        max-width: none;
    }
}

/* =======================================================================
   【精致质感升级 · 补全缺失样式】 v2 — 2026-06-02
   说明：以下样式补全上一轮新增功能缺失的 CSS，并统一提升质感。
   全部复用既有 CSS 变量，兼容 light/dark/ocean/forest/sunset。
   ======================================================================= */

/* ---------- 单元格放大查看弹窗 ---------- */
.cell-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5vh 4vw;
}

.cell-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(8, 12, 24, 0.5);
    backdrop-filter: blur(6px) saturate(120%);
    -webkit-backdrop-filter: blur(6px) saturate(120%);
    opacity: 0;
    animation: fadeIn 0.22s var(--ease-out) forwards;
}

.cell-modal {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    width: min(860px, 100%);
    max-height: 90vh;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--panel);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transform: translateY(14px) scale(0.985);
    opacity: 0;
    animation: cellModalIn 0.28s var(--ease-out) forwards;
}

@keyframes cellModalIn {
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.cell-modal.is-fullscreen {
    width: 100%;
    max-width: 1400px;
    height: 100%;
    max-height: 100%;
}

.cell-modal-head {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 15px 18px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg,
        color-mix(in srgb, var(--panel-soft) 70%, var(--panel)),
        var(--panel));
}

.cell-modal-title {
    display: flex;
    align-items: baseline;
    gap: 10px;
    min-width: 0;
    font-weight: 700;
    color: var(--text-strong);
    font-size: 14px;
}

.cell-modal-title #cellModalTitle {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.cell-modal-meta {
    flex: 0 0 auto;
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
}

.cell-modal-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 0 0 auto;
}

.cell-modal-body {
    flex: 1 1 auto;
    overflow: auto;
    padding: 20px 22px;
    line-height: 1.7;
}

.cell-modal-body.cell-markdown {
    max-height: none;
    font-size: 14px;
}

.cell-modal-raw {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
    font-size: 13px;
    color: var(--text);
}

/* ---------- 侧边栏（输入面板）折叠 ---------- */
.panel-collapse-btn {
    margin-left: auto;
}

.layout.input-collapsed {
    grid-template-columns: 0 minmax(420px, 1fr) minmax(340px, 460px);
}

.layout.input-collapsed > #panel-input {
    width: 0;
    min-width: 0;
    padding: 0;
    margin: 0;
    border: 0;
    opacity: 0;
    pointer-events: none;
    overflow: hidden;
}

.expand-input-handle {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
    flex-direction: column;
    gap: 8px;
    padding: 16px 8px;
    border: 1px solid var(--border-strong);
    border-left: 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    background: linear-gradient(180deg,
        color-mix(in srgb, var(--panel) 92%, var(--primary-softer)),
        var(--panel));
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    box-shadow: 6px 0 18px -10px rgba(15, 23, 42, 0.3);
    writing-mode: vertical-rl;
    transition:
        background 0.18s var(--ease),
        box-shadow 0.18s var(--ease),
        padding 0.18s var(--ease);
}

.expand-input-handle .icon {
    writing-mode: horizontal-tb;
    width: 16px;
    height: 16px;
}

.expand-input-handle:hover {
    background: var(--primary-soft);
    color: var(--primary-dark);
    padding-left: 11px;
    box-shadow: 8px 0 22px -10px color-mix(in srgb, var(--primary) 45%, transparent);
    transform: translateY(-50%);
}

/* ---------- 设置：开关 switch ---------- */
.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 13px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel-soft);
    cursor: pointer;
    transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}

.setting-row + .setting-row {
    margin-top: 9px;
}

.setting-row:hover {
    border-color: var(--border-strong);
    background: color-mix(in srgb, var(--panel-soft) 60%, var(--panel));
}

.setting-text {
    display: grid;
    gap: 3px;
    min-width: 0;
}

.setting-title {
    font-weight: 700;
    font-size: 13px;
    color: var(--text-strong);
}

.setting-desc {
    font-size: 12px;
    line-height: 1.5;
    color: var(--muted);
}

.switch {
    position: relative;
    flex: 0 0 auto;
    width: 42px;
    height: 24px;
}

.switch input {
    position: absolute;
    inset: 0;
    opacity: 0;
    margin: 0;
    width: 100%;
    height: 100%;
    min-height: auto;
    cursor: pointer;
    z-index: 1;
}

.switch-track {
    position: absolute;
    inset: 0;
    border-radius: 999px;
    background: var(--border-strong);
    transition: background var(--dur) var(--ease);
}

.switch-track::after {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
    transition: transform var(--dur) var(--ease-spring);
}

.switch input:checked + .switch-track {
    background: var(--primary);
}

.switch input:checked + .switch-track::after {
    transform: translateX(18px);
}

.switch input:focus-visible + .switch-track {
    box-shadow: var(--ring);
}

/* ---------- 拖拽上传卡片（重设计，整块可点击/可拖入） ---------- */
.drop-card {
    position: relative;
    margin: 0;
    border: 1.5px dashed color-mix(in srgb, var(--primary) 34%, var(--border-strong));
    border-radius: var(--radius);
    background:
        radial-gradient(130% 90% at 50% 0%,
            color-mix(in srgb, var(--primary) 8%, transparent) 0%,
            transparent 62%),
        linear-gradient(180deg,
            color-mix(in srgb, var(--panel) 86%, var(--panel-soft)),
            var(--panel-soft));
    box-shadow:
        inset 0 1px 0 color-mix(in srgb, #fff 50%, transparent),
        var(--shadow-sm);
    overflow: hidden;
    transition:
        border-color 0.2s var(--ease),
        box-shadow 0.2s var(--ease),
        transform 0.2s var(--ease);
}

.drop-card:focus-within {
    border-color: color-mix(in srgb, var(--primary) 55%, var(--border-strong));
    box-shadow: var(--ring), var(--shadow-sm);
}

.drop-card:hover {
    border-color: color-mix(in srgb, var(--primary) 52%, var(--border-strong));
    box-shadow:
        inset 0 1px 0 color-mix(in srgb, #fff 50%, transparent),
        0 12px 30px -16px color-mix(in srgb, var(--primary) 50%, transparent);
}

.drop-card.drag-over {
    border-color: var(--primary);
    border-style: solid;
    transform: scale(1.012);
    background:
        radial-gradient(130% 90% at 50% 0%,
            color-mix(in srgb, var(--primary) 16%, transparent) 0%,
            transparent 62%),
        var(--primary-softer);
    animation: drop-pulse 1.1s var(--ease) infinite;
}

@keyframes drop-pulse {
    0%, 100% {
        box-shadow:
            inset 0 0 0 1.5px color-mix(in srgb, var(--primary) 22%, transparent),
            0 8px 24px -10px color-mix(in srgb, var(--primary) 34%, transparent);
    }
    50% {
        box-shadow:
            inset 0 0 0 1.5px color-mix(in srgb, var(--primary) 40%, transparent),
            0 12px 32px -10px color-mix(in srgb, var(--primary) 52%, transparent);
    }
}

.drop-card-inner {
    position: relative;
    z-index: 1;
    width: 100%;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: transparent;
    border: 0;
    border-radius: var(--radius);
    box-shadow: none;
    color: var(--text);
    text-align: left;
    cursor: pointer;
}

.drop-card-inner:hover {
    background: transparent;
    transform: none;
    box-shadow: none;
}

.drop-card-icon {
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    color: var(--on-primary);
    background: linear-gradient(150deg,
        color-mix(in srgb, var(--primary) 88%, #fff 12%),
        var(--primary) 55%,
        var(--primary-dark));
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.3),
        0 10px 22px -12px color-mix(in srgb, var(--primary) 75%, transparent);
    transition: transform 0.25s var(--ease-spring);
}

.drop-card:hover .drop-card-icon {
    transform: translateY(-2px) scale(1.04);
}

.drop-card-icon .icon {
    width: 24px;
    height: 24px;
}

.drop-card-text {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.drop-card-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-strong);
    letter-spacing: -0.005em;
}

.drop-card-sub {
    font-size: 12px;
    color: var(--muted);
    line-height: 1.45;
}

.drop-card-cta {
    flex: 0 0 auto;
    padding: 7px 14px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    font-size: 12.5px;
    font-weight: 700;
    transition: background 0.18s var(--ease), color 0.18s var(--ease);
}

.drop-card:hover .drop-card-cta {
    background: var(--primary);
    color: var(--on-primary);
}

/* ---------- 精致质感：粘贴区 / 文本框 ---------- */
#pasteInput,
#outputText {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel-softer);
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.04);
    transition:
        border-color 0.16s var(--ease),
        box-shadow 0.16s var(--ease),
        background 0.16s var(--ease);
}

#pasteInput:focus,
#outputText:focus {
    border-color: color-mix(in srgb, var(--primary) 55%, var(--border));
    background: var(--panel);
    box-shadow:
        var(--ring),
        inset 0 1px 2px rgba(15, 23, 42, 0.03);
}

.field-label {
    letter-spacing: -0.005em;
}

/* ---------- 精致质感：预览表格 ---------- */
.table-wrap {
    border-radius: var(--radius-sm);
    box-shadow:
        inset 0 0 0 1px var(--border),
        var(--shadow-sm);
    border: 0;
}

th {
    background:
        linear-gradient(180deg,
            color-mix(in srgb, var(--panel-soft) 60%, var(--panel)),
            var(--panel-soft));
    box-shadow: inset 0 -1px 0 var(--border-strong);
    letter-spacing: -0.005em;
}

tbody tr:nth-child(even) td {
    background: color-mix(in srgb, var(--panel-soft) 45%, var(--panel));
}

tbody tr:nth-child(even) td:first-child {
    background: color-mix(in srgb, var(--panel-soft) 45%, var(--panel));
}

tbody tr:hover td {
    background: var(--primary-softer);
}

tbody tr:has(input[type="checkbox"]:checked) td,
tbody tr:has(input[type="checkbox"]:checked) td:first-child {
    background: var(--primary-soft);
}

/* ---------- 精致质感：分段控件 ---------- */
.segmented {
    border-radius: 14px;
    background:
        linear-gradient(180deg,
            color-mix(in srgb, var(--panel-soft) 80%, var(--panel)),
            var(--panel-soft));
    box-shadow:
        inset 0 1px 2px rgba(15, 23, 42, 0.05);
}

.segmented button.active {
    background: var(--panel);
    box-shadow:
        var(--shadow-sm),
        0 0 0 1px color-mix(in srgb, var(--primary) 18%, transparent),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

/* ---------- 精致质感：抽屉 ---------- */
.drawer-backdrop {
    background: rgba(8, 12, 24, 0.42);
    backdrop-filter: blur(8px) saturate(120%);
    -webkit-backdrop-filter: blur(8px) saturate(120%);
}

.drawer {
    border-left: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
    background:
        linear-gradient(180deg,
            color-mix(in srgb, var(--panel) 96%, var(--primary-softer)),
            var(--panel));
}

.drawer-head {
    background: linear-gradient(180deg,
        color-mix(in srgb, var(--panel-soft) 55%, var(--panel)),
        transparent);
}

/* ---------- 精致质感：历史卡片 ---------- */
.history-item {
    background: linear-gradient(180deg,
        color-mix(in srgb, var(--panel) 92%, var(--panel-soft)),
        var(--panel-soft));
}

.history-item:hover {
    box-shadow: 0 8px 20px -14px rgba(15, 23, 42, 0.4);
    transform: translateY(-1px);
}

/* ---------- 逐行 JSON 输出卡片（默认折叠，节省空间） ---------- */
.row-output-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow: auto;
    padding: 2px;
    flex: 1 1 auto;
    min-height: 0;
}

.row-output-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: linear-gradient(180deg,
        color-mix(in srgb, var(--panel) 92%, var(--panel-soft)),
        var(--panel-soft));
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.row-output-card:hover {
    border-color: var(--border-strong);
}

.row-output-head {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 9px 11px;
    cursor: pointer;
    user-select: none;
}

.row-output-head:hover {
    background: color-mix(in srgb, var(--primary-softer) 60%, transparent);
}

.row-output-toggle {
    flex: 0 0 auto;
    width: 22px;
    height: 22px;
    min-height: auto;
    padding: 0;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--muted);
    box-shadow: none;
}

.row-output-toggle:hover {
    background: transparent;
    transform: none;
    box-shadow: none;
}

.row-output-toggle .chevron {
    width: 15px;
    height: 15px;
    transition: transform var(--dur) var(--ease);
}

.row-output-card:not(.collapsed) .row-output-toggle .chevron {
    transform: rotate(90deg);
}

.row-output-meta {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    gap: 9px;
    min-width: 0;
}

.row-output-badge {
    flex: 0 0 auto;
    padding: 2px 9px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    font-size: 11.5px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.row-output-summary {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12.5px;
    color: var(--muted);
}

.row-output-copy {
    flex: 0 0 auto;
}

.row-output-json {
    margin: 0;
    padding: 11px 13px;
    border-top: 1px solid var(--border);
    background: var(--panel-softer);
    font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
    font-size: 12.5px;
    line-height: 1.6;
    color: var(--text);
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 360px;
    overflow: auto;
}

.row-output-card.collapsed .row-output-json {
    display: none;
}

/* ---------- 表格顶部横向滚动条（与底部同步，便于滑动） ---------- */
.table-scroll-top {
    flex: 0 0 auto;
    overflow-x: auto;
    overflow-y: hidden;
    height: 14px;
    padding: 0 1px;
    margin-bottom: 6px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--panel-soft) 70%, transparent);
    border: 1px solid var(--border);
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
}

.table-scroll-top::-webkit-scrollbar {
    height: 12px;
}

.table-scroll-top::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

.table-scroll-top::-webkit-scrollbar-thumb:hover {
    background: var(--muted-soft);
    background-clip: padding-box;
    border: 2px solid transparent;
}

.table-scroll-top > div {
    height: 1px;
}

.table-scroll-top.is-hidden {
    display: none;
}

/* ---------- 表格视口：承载浮动的左右滚动导航按钮 ---------- */
.table-viewport {
    position: relative;
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.table-viewport .table-wrap {
    flex: 1 1 auto;
    min-height: 0;
}

/* 浮在表格左右边缘的滚动按钮，导入多列数据时方便左右移动 */
.table-scroll-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 6;
    width: 34px;
    height: 56px;
    padding: 0;
    color: var(--text-strong);
    background: color-mix(in srgb, var(--panel) 92%, transparent);
    border: 1px solid var(--border-strong);
    border-radius: 12px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(8px) saturate(140%);
    -webkit-backdrop-filter: blur(8px) saturate(140%);
    opacity: 0;
    transition:
        opacity 0.18s var(--ease),
        background 0.16s var(--ease),
        transform 0.16s var(--ease-spring),
        box-shadow 0.16s var(--ease);
}

.table-scroll-nav .icon {
    width: 18px;
    height: 18px;
}

.table-scroll-nav-left {
    left: 8px;
}

.table-scroll-nav-right {
    right: 8px;
}

.table-viewport:hover .table-scroll-nav:not(.is-hidden) {
    opacity: 0.94;
}

.table-scroll-nav:hover {
    background: var(--primary);
    color: var(--on-primary);
    border-color: var(--primary);
    transform: translateY(-50%) scale(1.06);
    box-shadow: 0 14px 28px -10px color-mix(in srgb, var(--primary) 60%, transparent);
}

.table-scroll-nav:active {
    transform: translateY(-50%) scale(0.96);
}

.table-scroll-nav.is-hidden {
    opacity: 0 !important;
    pointer-events: none;
}

/* 触屏 / 窄屏下常显，便于点按 */
@media (hover: none), (max-width: 720px) {
    .table-scroll-nav:not(.is-hidden) {
        opacity: 0.92;
    }
}

/* ---------- 收尾：去掉残留主题卡（设置已不再放外观） ---------- */
.settings-group .theme-options,
.settings-group .help-steps {
    /* 已从设置移除，保留空规则避免误用 */
}

/* ============================================================
   优化新增功能样式：表头筛选 / 编辑模式 / 全屏 / 分组配置
   ============================================================ */

/* —— 表头：标题 + 列级筛选输入框 —— */
#previewTable thead th .th-title {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
#previewTable thead th .th-filter {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 4px 8px;
  font-size: 12px;
  line-height: 1.4;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.15s var(--ease), box-shadow 0.15s var(--ease);
  box-sizing: border-box;
}
#previewTable thead th .th-filter::placeholder { color: var(--muted-soft); }
#previewTable thead th .th-filter:focus {
  border-color: var(--primary);
  box-shadow: var(--ring);
}
#previewTable thead th .th-filter:not(:placeholder-shown) {
  border-color: var(--primary);
  background: var(--primary-softer);
}

/* —— 编辑模式：可编辑单元格 —— */
.preview-cell.is-editable {
  cursor: text;
  position: relative;
}
.preview-cell.is-editable:hover {
  background: var(--primary-softer);
  outline: 1px dashed var(--border-strong);
  outline-offset: -1px;
}
.preview-cell .editable-text {
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 18px;
}
.cell-editor {
  width: 100%;
  min-height: 60px;
  resize: vertical;
  padding: 6px 8px;
  font: inherit;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--primary);
  border-radius: 8px;
  outline: none;
  box-shadow: var(--ring);
  box-sizing: border-box;
}

/* —— 工具栏 chip：主色调强调 —— */
button.chip.chip-primary,
.chip.chip-primary {
  color: var(--on-primary);
  background: var(--primary);
  border-color: var(--primary);
}
button.chip.chip-primary:hover,
.chip.chip-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}
button.chip.is-active,
.chip.is-active {
  color: var(--on-primary);
  background: var(--primary);
  border-color: var(--primary);
}

/* —— 分组配置区 —— */
.group-config-bar {
  margin: 0 0 12px;
  padding: 10px 14px;
  background: var(--primary-softer);
  border: 1px solid var(--primary-soft);
  border-radius: var(--radius-sm);
}
.group-config-bar[hidden] { display: none; }
.group-config-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.group-config-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-strong);
}
.group-select {
  padding: 6px 10px;
  font-size: 13px;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  outline: none;
  min-width: 200px;
  max-width: 320px;
}
.group-select:focus {
  border-color: var(--primary);
  box-shadow: var(--ring);
}
.group-config-hint {
  font-size: 12px;
  color: var(--muted);
  flex: 1 1 200px;
}

/* —— 表格全屏模式 —— */
body.table-fullscreen {
  overflow: hidden;
}
body.table-fullscreen .workspace-scroll {
  position: fixed;
  inset: 0;
  z-index: 9999;
  margin: 0;
  padding: 16px 20px 20px;
  background: var(--bg);
  overflow: auto;
  box-shadow: var(--shadow-lg);
}
body.table-fullscreen .workspace-scroll .table-viewport,
body.table-fullscreen .workspace-scroll .table-wrap {
  max-height: calc(100vh - 90px);
}
body.table-fullscreen #fullscreenBtn::after {
  content: "（已全屏 · Esc 退出）";
}

/* ============================================================
   Paozi UIUX 二轮打磨：上传区质感、高效空间、可读性收口
   ============================================================ */

/* 上传卡片增加细腻高光与材质层，避免“普通虚线框”的廉价感 */
.drop-card::before {
    content: "";
    position: absolute;
    inset: 1px;
    border-radius: calc(var(--radius) - 1px);
    pointer-events: none;
    background:
        linear-gradient(135deg, color-mix(in srgb, #fff 32%, transparent), transparent 34%),
        radial-gradient(circle at 16% 18%, color-mix(in srgb, var(--primary) 18%, transparent), transparent 32%),
        radial-gradient(circle at 92% 88%, color-mix(in srgb, var(--accent, var(--primary)) 14%, transparent), transparent 30%);
    opacity: 0.88;
    transition: opacity .18s var(--ease), transform .18s var(--ease);
}
.drop-card::after {
    content: "";
    position: absolute;
    inset: auto 18px 12px 18px;
    height: 1px;
    pointer-events: none;
    background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--primary) 38%, transparent), transparent);
    opacity: .55;
}
.drop-card:hover::before,
.drop-card:focus-within::before,
.drop-card.drag-over::before {
    opacity: 1;
    transform: scale(1.006);
}
.drop-card.drag-over::after {
    height: 2px;
    opacity: .9;
}

/* 左侧折叠后让中央表格获得更稳定空间，不出现塌缩抖动 */
.layout.input-collapsed > #panel-input {
    overflow: hidden;
}
.layout.input-collapsed .workspace-scroll {
    min-width: 0;
}

/* 顶部横向滚动条更像一个可操作控件，而不是浏览器默认滚动槽 */
.table-scroll-top {
    position: sticky;
    top: 0;
    z-index: 8;
    box-shadow: 0 7px 18px -18px var(--shadow-color);
}
.table-scroll-top:not(.is-hidden)::before {
    content: "拖动这里横向浏览更多列";
    position: absolute;
    right: 10px;
    top: -18px;
    font-size: 11px;
    color: var(--muted-soft);
    pointer-events: none;
}
.table-scroll-top:hover::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, var(--primary) 46%, var(--border-strong));
}

/* Markdown 放大窗口：更适合阅读长答案 */
.cell-modal-body.cell-markdown {
    font-size: 15px;
    line-height: 1.72;
}
.cell-modal-body.cell-markdown h1,
.cell-modal-body.cell-markdown h2,
.cell-modal-body.cell-markdown h3 {
    line-height: 1.28;
    color: var(--text-strong);
}
.cell-modal-body.cell-markdown pre,
.cell-modal-body.cell-markdown code {
    border-radius: 10px;
}
.cell-modal-fs.is-active {
    color: var(--on-primary);
    background: var(--primary);
    border-color: var(--primary);
}

/* 历史记录重命名入口强化一点，避免用户找不到 */
.history-actions .rename-history,
button.rename-history {
    border-color: color-mix(in srgb, var(--primary) 30%, var(--border-strong));
    color: var(--primary-dark);
}
.history-actions .rename-history:hover,
button.rename-history:hover {
    color: var(--on-primary);
    background: var(--primary);
    border-color: var(--primary);
}

/* 输出卡片默认折叠时更紧凑，符合“复制为主、不占空间”的用法 */
.row-output-card.collapsed {
    padding-bottom: 10px;
}
.row-output-card.collapsed .row-output-head {
    margin-bottom: 0;
}