:root {
    --primary: #0f766e;
    --primary-hover: #0d5f58;
    --primary-soft: #ccfbf1;
    --accent: #b45309;
    --bg-page: #f2f7f4;
    --bg-page-alt: #e8f1ec;
    --bg-card: #ffffff;
    --bg-card-soft: #f8fcfa;
    --text-main: #15202b;
    --text-sub: #6b7b88;
    --border: #dce6e0;
    --border-strong: #c5d4cb;
    --success: #15803d;
    --danger: #b91c1c;
    --warning: #b45309;
    --focus-ring: rgba(15, 118, 110, 0.14);
    --primary-12: rgba(15, 118, 110, 0.12);
    --primary-18: rgba(15, 118, 110, 0.18);
    --primary-24: rgba(15, 118, 110, 0.24);
    --primary-28: rgba(15, 118, 110, 0.28);
    --surface-1: var(--bg-card-soft);
    --surface-2: var(--bg-card);
    --surface-3: var(--bg-page-alt);
    --surface-4: var(--bg-page);
    --radius-xs: 6px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.06), 0 2px 4px -2px rgb(0 0 0 / 0.06);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.05);
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    /* layout tokens */
    --sidebar-width: 240px;
    --sidebar-width-collapsed: 52px;
    --library-width: 340px;
    /* spacing scale */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    /* component radii */
    --radius-card: 10px;
    --radius-btn: 8px;
    /* fallbacks used across the app */
    --border-subtle: var(--border);
    --text-primary: var(--text-main);
    --text-muted: var(--text-sub);
    --success-subtle: rgba(21, 128, 61, 0.08);
    --success-border: rgba(21, 128, 61, 0.25);
    --success-text: var(--success);
    --warning-subtle: rgba(180, 83, 9, 0.08);
    --warning-border: rgba(180, 83, 9, 0.25);
    --warning-text: var(--warning);
    --danger-subtle: rgba(185, 28, 28, 0.08);
    --danger-border: rgba(185, 28, 28, 0.25);
    --danger-text: var(--danger);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-height: 100vh;
    font-family: -apple-system, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Noto Sans CJK SC", system-ui, sans-serif;
    color: var(--text-main);
    background: var(--bg-page);
    /* 主题切换过渡：≤150ms，避免整页闪烁 */
    transition: background-color 150ms ease, color 150ms ease;
}

/* 薄荷（原 :root 默认）显式写一份，方便维护、与其他主题对称 */
body[data-theme="mint"] {
    --primary: #0f766e;
    --primary-hover: #0d5f58;
    --primary-soft: #ccfbf1;
    --accent: #b45309;
    --bg-page: #f2f7f4;
    --bg-page-alt: #e8f1ec;
    --bg-card: #ffffff;
    --bg-card-soft: #f8fcfa;
    --text-main: #15202b;
    --text-sub: #6b7b88;
    --border: #dce6e0;
    --border-strong: #c5d4cb;
    --focus-ring: rgba(15, 118, 110, 0.14);
    --primary-12: rgba(15, 118, 110, 0.12);
    --primary-18: rgba(15, 118, 110, 0.18);
    --primary-24: rgba(15, 118, 110, 0.24);
    --primary-28: rgba(15, 118, 110, 0.28);
}

/* ── 新·日光 daylight：冷调高对比浅色，推荐作为浅色默认 ────────────────────── */
body[data-theme="daylight"] {
    --primary: #0ea5e9;
    --primary-hover: #0284c7;
    --primary-soft: #e0f2fe;
    --accent: #7c3aed;
    --bg-page: #f8fafc;
    --bg-page-alt: #eef2f7;
    --bg-card: #ffffff;
    --bg-card-soft: #f4f7fb;
    --text-main: #0f172a;
    --text-sub: #64748b;
    --border: #e2e8f0;
    --border-strong: #cbd5e1;
    --success: #059669;
    --danger: #dc2626;
    --warning: #d97706;
    --focus-ring: rgba(14, 165, 233, 0.18);
    --primary-12: rgba(14, 165, 233, 0.12);
    --primary-18: rgba(14, 165, 233, 0.18);
    --primary-24: rgba(14, 165, 233, 0.24);
    --primary-28: rgba(14, 165, 233, 0.28);
}

/* ── 新·米沙 sand：暖调低饱和米沙色，长文阅读极佳 ─────────────────────────── */
body[data-theme="sand"] {
    --primary: #b98a4b;
    --primary-hover: #9a6f35;
    --primary-soft: #f3e7d3;
    --accent: #0f766e;
    --bg-page: #faf6ef;
    --bg-page-alt: #f2ece0;
    --bg-card: #fffdf8;
    --bg-card-soft: #f8f2e5;
    --text-main: #3f3320;
    --text-sub: #8a7a5f;
    --border: #e8dcc5;
    --border-strong: #d6c5a2;
    --success: #4d7c0f;
    --danger: #b91c1c;
    --warning: #b45309;
    --focus-ring: rgba(185, 138, 75, 0.18);
    --primary-12: rgba(185, 138, 75, 0.12);
    --primary-18: rgba(185, 138, 75, 0.18);
    --primary-24: rgba(185, 138, 75, 0.24);
    --primary-28: rgba(185, 138, 75, 0.28);
}

body[data-theme="slate"] {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-soft: #dbeafe;
    --accent: #0f766e;
    --bg-page: #edf0f5;
    --bg-page-alt: #e2e7ef;
    --bg-card: #ffffff;
    --bg-card-soft: #f6f8fb;
    --text-main: #0f172a;
    --text-sub: #64748b;
    --border: #d5dce8;
    --border-strong: #bcc8da;
    --success: #0f766e;
    --danger: #b91c1c;
    --warning: #a16207;
    --focus-ring: rgba(37, 99, 235, 0.14);
    --primary-12: rgba(37, 99, 235, 0.12);
    --primary-18: rgba(37, 99, 235, 0.18);
    --primary-24: rgba(37, 99, 235, 0.24);
    --primary-28: rgba(37, 99, 235, 0.28);
}

body[data-theme="paper"] {
    --primary: #a16207;
    --primary-hover: #854d0e;
    --primary-soft: #fef3c7;
    --accent: #1d4ed8;
    --bg-page: #faf7f0;
    --bg-page-alt: #f3ecdf;
    --bg-card: #fffcf5;
    --bg-card-soft: #fbf6ea;
    --text-main: #292524;
    --text-sub: #78716c;
    --border: #e8dbc4;
    --border-strong: #dcc8a8;
    --success: #3f6212;
    --danger: #b91c1c;
    --warning: #b45309;
    --focus-ring: rgba(161, 98, 7, 0.14);
    --primary-12: rgba(161, 98, 7, 0.12);
    --primary-18: rgba(161, 98, 7, 0.18);
    --primary-24: rgba(161, 98, 7, 0.24);
    --primary-28: rgba(161, 98, 7, 0.28);
}

body[data-theme="midnight"] {
    --primary: #38bdf8;
    --primary-hover: #7dd3fc;
    --primary-soft: rgba(56, 189, 248, 0.12);
    --accent: #f59e0b;
    --bg-page: #0f172a;
    --bg-page-alt: #1e293b;
    --bg-card: #1e293b;
    --bg-card-soft: #162032;
    --text-main: #e2e8f0;
    --text-sub: #94a3b8;
    --border: #2d3d50;
    --border-strong: #3d5068;
    --success: #4ade80;
    --danger: #f87171;
    --warning: #fbbf24;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.35), 0 4px 6px -4px rgb(0 0 0 / 0.35);
    --focus-ring: rgba(56, 189, 248, 0.2);
    --primary-12: rgba(56, 189, 248, 0.12);
    --primary-18: rgba(56, 189, 248, 0.18);
    --primary-24: rgba(56, 189, 248, 0.24);
    --primary-28: rgba(56, 189, 248, 0.28);
}
body[data-theme="midnight"] .app-header {
    background: rgba(15, 23, 42, 0.95);
    border-color: var(--border);
}
body[data-theme="midnight"] .bottom-bar {
    background: rgba(15, 23, 42, 0.95);
}
body[data-theme="midnight"] textarea,
body[data-theme="midnight"] input[type="text"],
body[data-theme="midnight"] input[type="number"],
body[data-theme="midnight"] select {
    background: #0f172a;
    color: var(--text-main);
    border-color: var(--border);
}
body[data-theme="midnight"] .mode-switch {
    background: rgba(30, 41, 59, 0.8);
    border-color: var(--border);
}
body[data-theme="midnight"] .mini-btn,
body[data-theme="midnight"] .ghost-btn,
body[data-theme="midnight"] .copy-btn {
    background: #1e293b;
    color: var(--text-sub);
    border-color: var(--border);
}
body[data-theme="midnight"] .prompt-item {
    background: var(--bg-card);
}
body[data-theme="midnight"] .quick-prompt-card {
    background: rgba(30, 41, 59, 0.82);
}
body[data-theme="midnight"] .icon-btn {
    background: #1e293b;
    color: var(--text-sub);
}
body[data-theme="midnight"] .chip {
    background: rgba(30, 41, 59, 0.8);
    color: var(--text-sub);
    border-color: var(--border);
}
body[data-theme="midnight"] .toast {
    background: #1e293b;
    color: var(--text-main);
}
body[data-theme="midnight"] .dialog-box {
    background: var(--bg-card);
    border-color: var(--border);
}
body[data-theme="midnight"] .dialog-overlay {
    background: rgba(0, 0, 0, 0.6);
}
body[data-theme="midnight"] .sidebar-panel {
    background: var(--bg-card);
}
body[data-theme="midnight"] .library-panel {
    background: rgba(30, 41, 59, 0.5);
}
body[data-theme="midnight"] .nav-item:hover {
    background: rgba(56, 189, 248, 0.06);
}
body[data-theme="midnight"] .header-dropdown {
    background: var(--bg-card);
    border-color: var(--border);
}
body[data-theme="midnight"] .json-key { color: #38bdf8; }
body[data-theme="midnight"] .json-string { color: #fbbf24; }
body[data-theme="midnight"] .json-number { color: #818cf8; }
body[data-theme="midnight"] .json-bool { color: #a78bfa; }
body[data-theme="midnight"] .json-null { color: #64748b; }
body[data-theme="midnight"] .btn-primary {
    background: linear-gradient(135deg, #0284c7, #38bdf8);
}
body[data-theme="midnight"] .btn-secondary {
    background: linear-gradient(135deg, #475569, #334155);
}
body[data-theme="midnight"] .preview-box,
body[data-theme="midnight"] .json-preview,
body[data-theme="midnight"] .diff-box {
    background: rgba(15, 23, 42, 0.72);
}
body[data-theme="midnight"] .stat-card {
    background: rgba(30, 41, 59, 0.7);
}
body[data-theme="midnight"] .version-item,
body[data-theme="midnight"] .test-item,
body[data-theme="midnight"] .recipe-item {
    background: rgba(30, 41, 59, 0.82);
}
body[data-theme="midnight"] .status-banner {
    background: rgba(30, 41, 59, 0.5);
}
body[data-theme="midnight"] .kbd {
    background: rgba(30, 41, 59, 0.8);
}
body[data-theme="midnight"] .card {
    background: var(--bg-card);
}
body[data-theme="midnight"] .quick-hero {
    background: transparent;
    border-color: var(--border);
}
body[data-theme="midnight"] .app-header {
    border-bottom-color: rgba(56, 189, 248, 0.08);
}
body[data-theme="midnight"] .bottom-bar {
    background: rgba(15, 23, 42, 0.98);
    border-top-color: rgba(56, 189, 248, 0.08);
}
body[data-theme="midnight"] .app-shell.quick-mode .card {
    background: transparent;
}
body[data-theme="midnight"] .quick-side .quick-prompt-card {
    background: rgba(30, 41, 59, 0.6);
    border-color: rgba(56, 189, 248, 0.08);
}
body[data-theme="midnight"] .quick-side .chip-row .chip {
    border-color: rgba(56, 189, 248, 0.1);
}

a { color: inherit; }
button, select, input, textarea { font: inherit; }
button { cursor: pointer; }
textarea, input[type="text"], input[type="number"], select {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-main);
    padding: 8px 12px;
    font-size: 13px;
    line-height: 1.6;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
textarea:focus, input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-12), var(--shadow-sm);
}
textarea {
    min-height: 120px;
    resize: vertical;
    font-family: "JetBrains Mono", "Cascadia Mono", "Fira Code", Consolas, monospace;
}
::placeholder { color: #9ca3af; }

.app-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 6px 16px;
    height: 48px;
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
}

.app-title {
    display: flex;
    align-items: center;
    gap: 8px;
}
.app-title-icon {
    font-size: 16px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.mode-switch {
    display: inline-flex;
    align-items: center;
    padding: 2px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg-page);
    position: relative;
}

.mode-btn {
    border: none;
    background: transparent;
    color: var(--text-sub);
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    transition: color var(--transition-fast), background var(--transition);
    position: relative;
    z-index: 1;
}

.mode-btn.active {
    background: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.header-menu-wrap {
    position: relative;
}
.header-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 8px;
    min-width: 210px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: var(--bg-card);
    box-shadow: var(--shadow-lg);
    animation: dropIn 0.15s ease-out;
}
.header-dropdown .mini-btn {
    width: 100%;
    justify-content: flex-start;
}
.header-dropdown select {
    font-size: 12px;
    padding: 6px 10px;
}
.dropdown-section-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-sub);
    padding: 6px 8px 2px;
    margin-top: 2px;
}
.dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    border-radius: var(--radius-xs);
    font-size: 13px;
    text-align: left;
}
.dropdown-theme-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
}
.theme-dot-btn {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid transparent;
    background: var(--dot-color, var(--primary));
    cursor: pointer;
    transition: transform 0.15s ease, border-color 0.15s ease;
    flex-shrink: 0;
}
.theme-dot-btn:hover {
    transform: scale(1.2);
}
.theme-dot-btn.active {
    border-color: var(--text-main);
    transform: scale(1.15);
}
.sync-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    margin-left: auto;
    flex-shrink: 0;
}
.sync-dot-success { background: var(--success); }
.sync-dot-warning { background: var(--warning); }
.sync-dot-danger  { background: var(--danger); }
.sync-dot-info    { background: var(--primary); }
.sync-dot-muted   { background: var(--text-sub); }

.app-body {
    display: grid;
    grid-template-columns: var(--sidebar-width) var(--library-width) minmax(420px, 1fr);
    min-height: calc(100vh - 48px);
    transition: grid-template-columns 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sidebar collapsed: shrink the grid column itself so the panel does not overflow */
.app-shell.sidebar-collapsed .app-body {
    grid-template-columns: var(--sidebar-width-collapsed) var(--library-width) minmax(420px, 1fr);
}

.app-shell.focus-mode .app-body {
    grid-template-columns: minmax(0, 1fr);
}

.app-shell.focus-mode .sidebar-panel,
.app-shell.focus-mode .library-panel {
    display: none;
}

.sidebar-panel,
.library-panel,
.workspace-panel {
    min-width: 0;
    height: calc(100vh - 48px);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-panel {
    border-right: none;
    background: var(--bg-card);
    padding: 16px 16px 80px;
    transition: padding 0.25s ease, width 0.25s ease;
}

/* Collapsed state: only the top toggle button remains visible */
.app-shell.sidebar-collapsed .sidebar-panel {
    padding: 16px 6px 80px;
    overflow: hidden;
}
.app-shell.sidebar-collapsed .sidebar-content {
    display: none !important;
}
.app-shell.sidebar-collapsed .sidebar-topbar {
    justify-content: center;
    padding: 10px 4px;
    margin: -16px -6px 8px -6px;
    gap: 0;
}
.app-shell.sidebar-collapsed .sidebar-brand-text {
    display: none;
}
.app-shell.sidebar-collapsed .sidebar-toggle-btn {
    margin: 0 auto;
}

.sidebar-topbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-subtle);
    background: var(--surface-1);
    margin: -16px -16px 12px -16px;
}

.sidebar-toggle-btn {
    background: var(--surface-3);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.sidebar-toggle-btn:hover {
    background: var(--surface-4);
    border-color: var(--border-strong);
}

.sidebar-brand-text {
    display: flex;
    flex-direction: column;
    font-size: 13px;
    line-height: 1.2;
}

.sidebar-brand-text strong {
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-brand-text span {
    font-size: 11px;
    color: var(--text-muted);
}

.input-with-clear {
    position: relative;
    display: flex;
    align-items: center;
}
/* When wrapping a textarea, the container should be block-level */
.input-with-clear.textarea-wrap {
    display: block;
}
.input-with-clear.textarea-wrap textarea {
    padding-right: 36px;
}
.input-with-clear input[type="text"] {
    padding-right: 36px;
}

.clear-input-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--surface-3);
    border: none;
    border-radius: 4px;
    padding: 4px;
    cursor: pointer;
    opacity: 0.6;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}
/* For textarea wraps, pin to top-right instead of vertical center */
.input-with-clear.textarea-wrap .clear-input-btn {
    top: 8px;
    transform: none;
}

.clear-input-btn:hover {
    opacity: 1;
    background: var(--surface-4);
}

.panel-helper {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
    line-height: 1.3;
}

.quick-input-card .input-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
    border: 1px solid;
    cursor: pointer;
    transition: all 0.15s ease;
}

.chip.success {
    background: var(--success-subtle);
    border-color: var(--success-border);
    color: var(--success-text);
}

.chip.warning {
    background: var(--warning-subtle);
    border-color: var(--warning-border);
    color: var(--warning-text);
}

.chip.danger {
    background: var(--danger-subtle);
    border-color: var(--danger-border);
    color: var(--danger-text);
}

.chip:hover {
    opacity: 0.8;
}

.sync-chip {
    margin-left: 8px;
}

.mini-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.mini-btn:disabled:hover {
    background: var(--surface-3);
    border-color: var(--border);
}

.library-panel {
    border-right: none;
    background: var(--bg-page);
    padding: 16px 16px 80px;
}

.workspace-panel {
    padding: 24px 32px 80px;
    background: var(--bg-page);
}

.app-shell.quick-mode .sidebar-panel,
.app-shell.quick-mode .library-panel {
    display: none;
}

.app-shell.quick-mode .app-body {
    grid-template-columns: minmax(0, 1fr);
}

.app-shell.quick-mode .workspace-panel {
    padding: 6px 10px 50px;
}

.app-shell.quick-mode .card {
    border: none;
    box-shadow: none;
    padding: 10px 0;
    margin-bottom: 4px;
    background: transparent;
    border-radius: 0;
}
.app-shell.quick-mode .card:hover {
    box-shadow: none;
}
.app-shell.quick-mode .card-title {
    margin-bottom: 8px;
}
.app-shell.quick-mode .card-title h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-sub);
}

.app-shell.quick-mode .bottom-bar {
    padding: 5px 12px;
}

.quick-shell {
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 100%;
}

.quick-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 8px 4px;
    border: none;
    border-radius: 0;
    background: transparent;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2px;
}

.quick-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
}

.quick-subtitle {
    display: none;
}

.quick-grid {
    display: grid;
    grid-template-columns: minmax(0, 2.5fr) minmax(180px, 0.6fr);
    gap: 10px;
}

.quick-main,
.quick-side {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.quick-side .card {
    padding: 8px 0 !important;
}
.quick-side .card-title {
    margin-bottom: 6px;
}
.quick-side .card-title h3 {
    font-size: 12px !important;
}

.quick-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.quick-prompt-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 7px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-card);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.quick-prompt-card:hover {
    border-color: var(--primary-24);
    box-shadow: var(--shadow-sm);
}

.quick-prompt-card.selected {
    border-color: var(--primary);
    background: var(--primary-soft);
}

.textarea-xl {
    min-height: calc(40vh);
    font-size: 13px;
}

.panel-section {
    margin-bottom: 16px;
}
.panel-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
    padding-bottom: 6px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--text-sub);
    text-transform: uppercase;
    border-bottom: 1px solid var(--border);
}
.panel-title.collapsible {
    cursor: pointer;
    user-select: none;
    border-radius: var(--radius-xs);
    padding: 6px 8px 6px;
    margin: -6px -8px 8px;
    border-bottom: none;
    transition: background-color var(--transition-fast);
}
.panel-title.collapsible:hover {
    background: rgba(0,0,0,0.03);
}
.panel-title .chevron {
    display: inline-block;
    transition: transform 0.2s ease;
    font-size: 10px;
}
.panel-title .chevron.open {
    transform: rotate(90deg);
}
.panel-helper {
    font-size: 11px;
    color: var(--text-sub);
}

.nav-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 7px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-main);
    font-size: 13px;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}
.nav-item:hover {
    background: rgba(0,0,0,0.04);
}
.nav-item.active {
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 600;
}
.nav-item-button {
    flex: 1;
    min-width: 0;
    border: none;
    background: transparent;
    color: inherit;
    text-align: left;
    font: inherit;
    padding: 0;
}
.nav-item-count {
    font-size: 11px;
    color: var(--text-sub);
    background: rgba(0,0,0,0.04);
    padding: 1px 6px;
    border-radius: 999px;
    min-width: 20px;
    text-align: center;
}
.nav-item .nav-item-actions {
    opacity: 0;
    transition: opacity var(--transition-fast);
}
.nav-item:hover .nav-item-actions {
    opacity: 1;
}

.mini-btn,
.ghost-btn,
.copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-sub);
    font-size: 12px;
    font-weight: 500;
    transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}
.mini-btn:hover,
.ghost-btn:hover,
.copy-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-soft);
}
.mini-btn.danger,
.ghost-btn.danger {
    color: var(--danger);
}
.mini-btn.danger:hover,
.ghost-btn.danger:hover {
    border-color: var(--danger);
    background: rgba(185, 28, 28, 0.06);
}
.mini-btn:active,
.ghost-btn:active,
.copy-btn:active {
    transform: scale(0.96);
}

.btn-primary,
.btn-secondary,
.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: none;
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}
.btn-primary {
    background: var(--primary);
    box-shadow: 0 1px 3px rgba(15, 118, 110, 0.3);
}
.btn-secondary {
    background: #475569;
    box-shadow: 0 1px 3px rgba(51, 65, 85, 0.3);
}
.btn-danger {
    background: var(--danger);
    box-shadow: 0 1px 3px rgba(185, 28, 28, 0.3);
}
.btn-primary:hover,
.btn-secondary:hover,
.btn-danger:hover {
    transform: translateY(-1px);
    filter: brightness(1.08);
}
.btn-primary:active,
.btn-secondary:active,
.btn-danger:active {
    transform: scale(0.97);
    filter: brightness(0.95);
}

.search-input {
    margin-bottom: 8px;
}

.filter-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}
.chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border-radius: var(--radius-xs);
    border: 1px solid var(--border);
    background: var(--bg-card);
    font-size: 11px;
    color: var(--text-sub);
}
.chip.active {
    background: var(--primary-soft);
    color: var(--primary);
    border-color: var(--primary-28);
}
.chip.tag {
    background: var(--bg-card-soft);
}
.chip.success {
    color: var(--success);
    border-color: rgba(21, 128, 61, 0.2);
    background: rgba(21, 128, 61, 0.06);
}
.chip.warning {
    color: var(--warning);
    border-color: rgba(180, 83, 9, 0.2);
    background: rgba(180, 83, 9, 0.06);
}
.chip.danger {
    color: var(--danger);
    border-color: rgba(185, 28, 28, 0.2);
    background: rgba(185, 28, 28, 0.06);
}

.library-toolbar {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 10px;
}
.toolbar-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    flex-wrap: wrap;
}
.toolbar-title {
    font-size: 16px;
    font-weight: 700;
}
.toolbar-meta {
    font-size: 12px;
    color: var(--text-sub);
}

.bulk-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    border: 1px dashed var(--primary-28);
    background: var(--primary-soft);
}

.prompt-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.prompt-list.compact .prompt-item {
    padding: 8px 10px;
}
.prompt-list.compact .prompt-item-snippet {
    display: none;
}
.prompt-list.compact .prompt-item-bottom {
    margin-top: 4px;
}

.prompt-item {
    display: flex;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
    cursor: pointer;
}
.prompt-item:hover {
    border-color: var(--primary-24);
    box-shadow: var(--shadow);
}
.prompt-item.dragging {
    opacity: 0.55;
}
.prompt-item.drag-over {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-12);
}
.prompt-item.selected {
    border-color: var(--primary);
    background: var(--primary-soft);
}
.prompt-item.archived {
    opacity: 0.65;
}
.prompt-item:active {
    transform: scale(0.98);
}
.prompt-item-main {
    flex: 1;
    min-width: 0;
}
.prompt-item-top,
.prompt-item-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.prompt-item-title {
    font-size: 13px;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.prompt-item-snippet {
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-sub);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.prompt-item-meta,
.prompt-item-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 6px;
}
.prompt-item-actions {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: flex-end;
}
.icon-btn {
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-sub);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}
.icon-btn:hover {
    color: var(--primary);
    border-color: var(--primary-24);
}
.icon-btn.active {
    color: var(--primary);
    border-color: var(--primary-28);
    background: var(--primary-soft);
}
.icon-btn:active {
    transform: scale(0.94);
}
.fill-current svg {
    fill: currentColor;
}

.workspace-empty,
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    min-height: 50vh;
    text-align: center;
    color: var(--text-sub);
}
.empty-state {
    min-height: auto;
    padding: 40px 20px;
    margin: 16px 0;
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-card-soft);
}
.empty-state-icon {
    font-size: 48px;
    opacity: 0.4;
    color: var(--text-sub);
    margin-bottom: 8px;
}
.empty-state-icon .icon-lucide {
    width: 48px;
    height: 48px;
    stroke-width: 1.5;
}
.empty-state-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
}

.workspace-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
}
.workspace-title h2 {
    margin: 0;
    font-size: 20px;
}
.workspace-title p {
    margin: 4px 0 0;
    font-size: 12px;
    color: var(--text-sub);
}
.workspace-actions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.tab-row {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 14px;
    padding: 2px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    width: fit-content;
}
.tab-btn {
    border: none;
    border-radius: var(--radius-xs);
    padding: 6px 14px;
    background: transparent;
    color: var(--text-sub);
    font-size: 12px;
    font-weight: 600;
    transition: background var(--transition-fast), color var(--transition-fast);
}
.tab-btn:hover {
    background: rgba(0,0,0,0.04);
}
.tab-btn.active {
    background: var(--primary);
    color: #fff;
}

.card {
    position: relative;
    margin-bottom: 14px;
    padding: 16px;
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition-fast);
}
.card:hover,
.card:focus-within {
    border-color: var(--border);
    box-shadow: var(--shadow);
}
.card-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}
.card-title h3 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.01em;
}
.card-title p {
    margin: 2px 0 0;
    font-size: 12px;
    color: var(--text-sub);
}

.status-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    background: var(--bg-page);
    border: 1px solid var(--border);
    font-size: 12px;
}
.status-banner strong {
    color: var(--text-main);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.form-group.full {
    grid-column: 1 / -1;
}
.form-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-sub);
    letter-spacing: 0.02em;
}
.field-help {
    font-size: 11px;
    color: var(--text-sub);
}

.textarea-lg {
    min-height: 200px;
}

.meta-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.stack {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.version-list,
.test-list,
.recipe-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.version-item,
.test-item,
.recipe-item {
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-card);
}
.version-item.current {
    border-color: var(--primary-28);
    background: var(--primary-soft);
}
.block-item.dragging {
    opacity: 0.58;
}
.block-item.drag-over {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-12);
}
.version-item-head,
.test-item-head,
.recipe-item-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}
.muted {
    color: var(--text-sub);
}
.small {
    font-size: 12px;
}

.split-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.preview-box,
.json-preview,
.diff-box {
    min-height: 200px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-page);
    padding: 12px;
    overflow: auto;
    white-space: pre-wrap;
    line-height: 1.6;
    font-size: 13px;
}
.diff-box > div {
    margin-bottom: 4px;
}
.json-preview {
    font-size: 12px;
    font-family: "JetBrains Mono", "Cascadia Mono", "Fira Code", Consolas, monospace;
}
.json-key { color: #0f766e; }
.json-string { color: #b45309; }
.json-number { color: #2563eb; }
.json-bool { color: #7c3aed; }
.json-null { color: #94a3b8; }

.list-inline {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}

.variable-row,
.test-form-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.9fr 0.8fr auto;
    gap: 8px;
    align-items: end;
}

.runtime-variable-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.helper-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
}
.stat-card {
    padding: 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-page);
    font-size: 12px;
}
.stat-card strong {
    display: block;
    font-size: 16px;
    margin-top: 2px;
}

.bottom-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 5px 16px;
    border-top: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
}

.app-shell.focus-mode .workspace-panel {
    padding-left: 14px;
    padding-right: 14px;
}
.bottom-bar-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    font-size: 12px;
    color: var(--text-sub);
}
.active-prompt-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.dialog-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.dialog-box {
    width: min(760px, 100%);
    max-height: 88vh;
    overflow: auto;
    padding: 20px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: var(--bg-card);
    box-shadow: var(--shadow-lg);
}
.dialog-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 14px;
}
.dialog-title {
    font-size: 16px;
    font-weight: 700;
}
.dialog-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 6px;
    margin-top: 14px;
}

.toast-container {
    position: fixed;
    top: 60px;
    right: 16px;
    z-index: 400;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.toast {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-card);
    box-shadow: var(--shadow);
    font-size: 13px;
    font-weight: 500;
    max-width: 320px;
    transition: opacity 0.25s, transform 0.25s;
}
.toast.success { border-left: 3px solid var(--success); color: var(--success); }
.toast.error { border-left: 3px solid var(--danger); color: var(--danger); }
.toast.info { border-left: 3px solid var(--primary); color: var(--primary); }

.kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    padding: 2px 5px;
    border-radius: 4px;
    border: 1px solid var(--border);
    background: var(--bg-page);
    font-size: 11px;
    font-weight: 500;
}

.quality-bar {
    display: flex;
    gap: 3px;
    align-items: center;
}
.quality-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--border);
    transition: background var(--transition-fast);
}
.quality-dot.filled { background: var(--primary); }
.quality-dot.warn { background: var(--warning); }
.quality-dot.good { background: var(--success); }

.template-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}
.template-card {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.template-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}
.template-card h4 {
    margin: 0 0 4px;
    font-size: 13px;
    font-weight: 600;
}
.template-card p {
    margin: 0;
    font-size: 11px;
    color: var(--text-sub);
}
.template-card:active {
    transform: scale(0.98);
}

.floating-copy {
    position: sticky;
    bottom: 16px;
    float: right;
    z-index: 20;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: var(--primary);
    color: #fff;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: transform var(--transition-fast);
}
.floating-copy:hover {
    transform: scale(1.1);
}

.hidden { display: none !important; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes dropIn {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes slideInRight {
    from { opacity: 0; transform: translateX(8px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes toastIn {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes dialogScaleIn {
    from { opacity: 0; transform: scale(0.95) translateY(-8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes toastProgress {
    from { width: 100%; }
    to { width: 0%; }
}

.workspace-panel > * {
    animation: fadeIn 0.15s ease-out;
}
.dialog-box {
    animation: dialogScaleIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}
.toast {
    animation: toastIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    position: relative;
    overflow: hidden;
}
.toast-content {
    position: relative;
    z-index: 1;
}
.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--primary);
    animation: toastProgress var(--toast-duration, 2600ms) linear forwards;
}
.toast-progress-success { background: var(--success); }
.toast-progress-error { background: var(--danger); }
.toast-progress-info { background: var(--primary); }

.app-shell.quick-mode .quick-main .card:first-child {
    position: relative;
}
.app-shell.quick-mode .textarea-xl {
    min-height: calc(35vh);
    font-size: 14px;
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.app-shell.quick-mode .textarea-xl:focus {
    box-shadow: 0 0 0 3px var(--focus-ring), var(--shadow);
}

/* Card hover left border accent */
.prompt-item {
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), border-left-color var(--transition-fast);
    border-left: 3px solid transparent;
}
.prompt-item:hover {
    border-left-color: var(--primary);
    box-shadow: var(--shadow);
}
.prompt-item.selected {
    border-left-color: var(--primary);
}

/* Search highlight */
.search-highlight {
    background: rgba(251, 191, 36, 0.3);
    color: inherit;
    padding: 0 1px;
    border-radius: 2px;
}
body[data-theme="midnight"] .search-highlight {
    background: rgba(251, 191, 36, 0.2);
}

/* Copy feedback animation */
.copy-feedback-btn {
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform 0.1s ease;
}
.copy-feedback-btn.copy-success {
    background: var(--success) !important;
    color: #fff !important;
    border-color: var(--success) !important;
    transform: scale(1.02);
}

/* Save indicator */
.save-indicator {
    font-size: 11px;
    transition: opacity 0.3s ease;
    min-width: 50px;
}
.save-indicator.saving {
    color: var(--warning);
    opacity: 1;
}
.save-indicator.saved {
    color: var(--success);
    opacity: 1;
}
.save-indicator:empty {
    opacity: 0;
}

/* Bottom bar compactification */
.bottom-bar {
    padding: 5px 16px;
    gap: 8px;
}
.bottom-bar-info {
    gap: 8px;
}

/* Template card category color accent */
.template-card {
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.template-card:hover {
    transform: translateY(-1px);
}
.template-card h4 {
    font-size: 14px;
}

/* Midnight theme enhancements */
body[data-theme="midnight"] textarea:focus,
body[data-theme="midnight"] input:focus,
body[data-theme="midnight"] select:focus {
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15), 0 0 12px rgba(56, 189, 248, 0.06);
    border-color: var(--primary);
}
body[data-theme="midnight"] .prompt-item:hover {
    border-left-color: var(--primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
body[data-theme="midnight"] .mini-btn:hover,
body[data-theme="midnight"] .ghost-btn:hover,
body[data-theme="midnight"] .copy-btn:hover {
    background: rgba(56, 189, 248, 0.1);
    border-color: rgba(56, 189, 248, 0.3);
    color: var(--primary);
}
body[data-theme="midnight"] .nav-item.active {
    background: rgba(56, 189, 248, 0.1);
    border-color: rgba(56, 189, 248, 0.15);
}
body[data-theme="midnight"] .tab-btn.active {
    background: linear-gradient(135deg, #0284c7, #38bdf8);
}
body[data-theme="midnight"] .floating-copy {
    background: linear-gradient(135deg, #0284c7, #38bdf8);
    box-shadow: 0 4px 16px rgba(56, 189, 248, 0.25);
}
body[data-theme="midnight"] .template-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
    border-color: rgba(56, 189, 248, 0.3);
}
body[data-theme="midnight"] .search-highlight {
    background: rgba(56, 189, 248, 0.25);
}
body[data-theme="midnight"] .quick-prompt-card:hover {
    border-color: rgba(56, 189, 248, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}
body[data-theme="midnight"] .card:hover,
body[data-theme="midnight"] .card:focus-within {
    border-color: rgba(56, 189, 248, 0.12);
}
body[data-theme="midnight"] .copy-feedback-btn.copy-success {
    background: var(--success) !important;
}

/* Dialog polish */
.dialog-overlay {
    animation: fadeIn 0.15s ease-out;
}

/* Quick prompt card smooth transitions */
.quick-prompt-card {
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

/* Micro-interaction for card focus */
.app-shell.quick-mode .card:focus-within {
    border-color: var(--primary-24);
}

@media (max-width: 1400px) {
    :root {
        --sidebar-width: 220px;
        --library-width: 300px;
    }
    .app-body {
        grid-template-columns: var(--sidebar-width) var(--library-width) minmax(400px, 1fr);
    }
    .app-shell.sidebar-collapsed .app-body {
        grid-template-columns: var(--sidebar-width-collapsed) var(--library-width) minmax(400px, 1fr);
    }
}

@media (max-width: 1180px) {
    .app-body {
        grid-template-columns: 1fr;
    }
    .app-shell.sidebar-collapsed .app-body {
        grid-template-columns: 1fr;
    }
    .sidebar-panel,
    .library-panel,
    .workspace-panel {
        height: auto;
    }
    .workspace-panel {
        padding-top: 0;
    }
    .form-grid,
    .meta-grid,
    .split-panel,
    .helper-grid,
    .stats-grid,
    .runtime-variable-grid {
        grid-template-columns: 1fr;
    }
    .quick-grid {
        grid-template-columns: 1fr;
    }
    .template-gallery {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 860px) {
    .header-actions,
    .toolbar-row,
    .workspace-header,
    .bottom-bar {
        flex-direction: column;
        align-items: stretch;
    }
    .variable-row,
    .test-form-grid {
        grid-template-columns: 1fr;
    }
}


/* Custom Scrollbars — Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0.15) transparent;
}
body[data-theme="midnight"] * {
    scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

/* Custom Scrollbars — WebKit */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 10px;
    border: 2px solid transparent;
    background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid transparent;
    background-clip: padding-box;
}
body[data-theme="midnight"] ::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
}
body[data-theme="midnight"] ::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ═══════════════════════════════════════════════════════════════════════════
   UI/UX UPGRADE — Task 7
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Theme transition (200ms, no flash) ─────────────────────────────────── */
body, .app-header, .sidebar-panel, .library-panel, .workspace-panel,
.card, .prompt-item, .dialog-box, .header-dropdown, .bottom-bar,
.toast, .chip, .mini-btn, .btn-primary, .btn-secondary, .btn-danger,
.tab-btn, .nav-item, .stat-card, .version-item, .test-item, .recipe-item {
    transition-property: background-color, border-color, color, box-shadow;
    transition-duration: 200ms;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}
/* Don't override transform transitions on interactive elements */
.prompt-item, .btn-primary, .btn-secondary, .btn-danger, .mini-btn,
.icon-btn, .template-card, .quick-prompt-card {
    transition-property: background-color, border-color, color, box-shadow, transform;
}

/* ── Prompt list card — enhanced selected state ──────────────────────────── */
.prompt-item.selected {
    border-left: 3px solid var(--primary);
    background: var(--primary-soft);
    box-shadow: 0 0 0 1px var(--primary-24), var(--shadow-sm);
}
.prompt-item.selected .prompt-item-title {
    color: var(--primary);
}

/* ── Search input upgrade ────────────────────────────────────────────────── */
.search-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}
.search-input-wrap .search-icon {
    position: absolute;
    left: 10px;
    color: var(--text-sub);
    pointer-events: none;
    display: flex;
    align-items: center;
}
.search-input-wrap input {
    padding-left: 34px;
    padding-right: 36px;
    border-radius: var(--radius-md);
    font-size: 13px;
}
.search-input-wrap .clear-input-btn {
    top: 50%;
    transform: translateY(-50%);
}

/* ── Sidebar search box ──────────────────────────────────────────────────── */
.sidebar-search-wrap {
    position: relative;
    margin-bottom: 8px;
}
.sidebar-search-wrap .search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-sub);
    pointer-events: none;
    display: flex;
}
.sidebar-search-wrap input.search-input {
    padding-left: 34px;
    padding-right: 36px;
    border-radius: var(--radius-md);
    margin-bottom: 0;
}
.sidebar-search-wrap .clear-input-btn {
    top: 50%;
    transform: translateY(-50%);
}

/* ── Prompt item hover quick-copy buttons ────────────────────────────────── */
.prompt-item-quick-actions {
    display: flex;
    gap: 3px;
    opacity: 0;
    transition: opacity 0.15s ease;
}
.prompt-item:hover .prompt-item-quick-actions {
    opacity: 1;
}
.prompt-item-quick-actions .icon-btn {
    width: 26px;
    height: 26px;
    font-size: 12px;
}

/* ── Favorites section in library ───────────────────────────────────────── */
.prompt-list-section-label {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 2px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-sub);
    margin-bottom: 4px;
    margin-top: 8px;
}
.prompt-list-section-label:first-child {
    margin-top: 0;
}

/* ── Usage stats on prompt cards ────────────────────────────────────────── */
.prompt-usage-meta {
    font-size: 11px;
    color: var(--text-sub);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ── Command palette ─────────────────────────────────────────────────────── */
.command-palette-overlay {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    animation: fadeIn 0.12s ease-out;
}
.command-palette-box {
    width: min(600px, 92vw);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: var(--bg-card);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: dialogScaleIn 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}
.command-palette-input-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}
.command-palette-input-wrap input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 15px;
    outline: none;
    color: var(--text-main);
    padding: 0;
}
.command-palette-results {
    max-height: 380px;
    overflow-y: auto;
    padding: 6px;
}
.command-palette-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.1s ease;
    font-size: 13px;
}
.command-palette-item:hover,
.command-palette-item.active {
    background: var(--primary-soft);
    color: var(--primary);
}
.command-palette-item-icon {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-xs);
    background: var(--bg-page);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--text-sub);
}
.command-palette-item-label {
    flex: 1;
    font-weight: 500;
}
.command-palette-item-meta {
    font-size: 11px;
    color: var(--text-sub);
}
.command-palette-section {
    padding: 4px 12px 2px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-sub);
    margin-top: 4px;
}
.command-palette-empty {
    padding: 32px 16px;
    text-align: center;
    color: var(--text-sub);
    font-size: 13px;
}

/* ── Midnight theme overrides for new components ─────────────────────────── */
body[data-theme="midnight"] .command-palette-box {
    background: var(--bg-card);
    border-color: var(--border);
}
body[data-theme="midnight"] .command-palette-item:hover,
body[data-theme="midnight"] .command-palette-item.active {
    background: rgba(56, 189, 248, 0.1);
    color: var(--primary);
}
body[data-theme="midnight"] .command-palette-item-icon {
    background: rgba(30, 41, 59, 0.8);
}
body[data-theme="midnight"] .theme-dot-btn.active {
    border-color: var(--text-main);
}

/* ── Recent-use section in sidebar ──────────────────────────────────────── */
.recent-use-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.recent-use-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 8px;
    border-radius: var(--radius-xs);
    font-size: 12px;
    cursor: pointer;
    color: var(--text-main);
    transition: background 0.12s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.recent-use-item:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

/* ── Sync settings dialog ────────────────────────────────────────────────── */
.sync-status-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

/* ── Micro-interactions ──────────────────────────────────────────────────── */
.tab-btn {
    transition: background var(--transition-fast), color var(--transition-fast), transform 0.1s ease;
}
.tab-btn:active {
    transform: scale(0.96);
}
.nav-item {
    transition: background-color var(--transition-fast), color var(--transition-fast), transform 0.1s ease;
}
.nav-item:active {
    transform: scale(0.98);
}
.icon-btn {
    transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast), transform 0.1s ease;
}

/* ── Sidebar collapsed: show a tooltip on hover ─────────────────────────── */
.app-shell.sidebar-collapsed .sidebar-toggle-btn::after {
    content: '展开侧边栏';
    position: absolute;
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    padding: 4px 8px;
    font-size: 11px;
    white-space: nowrap;
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
    z-index: 10;
}
.app-shell.sidebar-collapsed .sidebar-toggle-btn:hover::after {
    opacity: 1;
}
.sidebar-toggle-btn {
    position: relative;
}


/* ══ 4.0 信息密度与视觉层级增强 ══════════════════════════════════════════ */

/* 统一按钮 / chip / 输入框的 focus 可见性 */
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
.chip:focus-visible,
.theme-dot-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-xs);
}

/* 三栏面板过渡与分隔更清晰 */
.library-panel,
.workspace-panel {
    transition: background-color 150ms ease, border-color 150ms ease;
}

/* 主题色点按钮（下拉中）精致化 */
.theme-dot-btn {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid var(--border);
    background: var(--dot-color, var(--primary));
    cursor: pointer;
    padding: 0;
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
    flex-shrink: 0;
}
.theme-dot-btn:hover {
    transform: scale(1.12);
    border-color: var(--text-sub);
}
.theme-dot-btn.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--focus-ring);
}
.dropdown-theme-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 4px 10px 8px;
}

/* chip 一致化 */
.chip {
    transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}
.chip:hover {
    border-color: var(--border-strong);
}
.chip:active {
    transform: scale(0.97);
}

/* 快速模式大输入框：配合"包裹为 Prompt"悬浮按钮 */
.compose-input-wrap {
    position: relative;
}
.compose-wrap-btn {
    position: absolute;
    top: 10px;
    right: 12px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 5px 10px;
    border-radius: 999px;
    border: 1px solid var(--primary);
    background: var(--primary);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
    z-index: 4;
}
.compose-wrap-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}
.compose-wrap-btn:active {
    transform: scale(0.97);
}
.compose-wrap-btn.hidden {
    display: none;
}

/* 输出区闪烁高亮：一次性引导复制 */
@keyframes copyPulse {
    0% { box-shadow: 0 0 0 0 var(--focus-ring); }
    50% { box-shadow: 0 0 0 6px var(--focus-ring); }
    100% { box-shadow: 0 0 0 0 rgba(0,0,0,0); }
}
.copy-pulse {
    animation: copyPulse 1.1s ease-out;
}

/* dropdown 下拉 section 标签更柔和 */
.dropdown-section-label {
    padding: 8px 12px 4px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-sub);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* 模式切换过渡：100ms 内完成 */
.app-shell {
    transition: grid-template-columns 100ms ease;
}

/* 响应式：≤1024 隐藏侧栏次要元素 */
@media (max-width: 1024px) {
    .card {
        padding: 14px;
        margin-bottom: 12px;
    }
    .quick-grid {
        grid-template-columns: 1fr !important;
    }
}