:root {
  color-scheme: light;
  --left-panel-width: 300px;
  --left-top-height: 300px;
  --right-top-height: 240px;
  --page-max-width: 1120px;
  --bg: #f4f1ea;
  --bg-accent:
    radial-gradient(circle at top left, rgba(43, 91, 149, 0.09), transparent 30%),
    radial-gradient(circle at top right, rgba(93, 112, 138, 0.08), transparent 26%),
    linear-gradient(180deg, #f4f1ea 0%, #efebe4 54%, #e8e4dd 100%);
  --panel: rgba(251, 249, 245, 0.82);
  --panel-border: rgba(67, 74, 89, 0.08);
  --text: #2b2f36;
  --muted: #626c7b;
  --primary: #3f5d7d;
  --primary-strong: #324b67;
  --accent: #58738f;
  --shadow: 0 12px 30px rgba(37, 42, 51, 0.08);
  --soft-surface: rgba(243, 239, 233, 0.92);
  --soft-panel: rgba(252, 250, 247, 0.94);
  --soft-border: rgba(67, 74, 89, 0.1);
  --glass-surface:
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.04)),
    rgba(252, 250, 247, 0.34);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-shadow: 0 10px 18px rgba(37, 42, 51, 0.04);
  --glass-inline-border: rgba(67, 74, 89, 0.08);
  --toast-surface:
    linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.08)),
    rgba(248, 245, 239, 0.72);
  --toast-border: rgba(255, 255, 255, 0.42);
  --code-bg: #23262b;
  --code-text: #dde5ef;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --focus-ring: rgba(63, 93, 125, 0.22);
  --mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  --sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ease-standard: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 160ms;
  --duration-medium: 240ms;
}

body[data-theme="dark"] {
  color-scheme: dark;
  --bg: #1e1e1e;
  --bg-accent:
    radial-gradient(circle at top left, rgba(86, 156, 214, 0.08), transparent 30%),
    radial-gradient(circle at top right, rgba(128, 128, 128, 0.06), transparent 28%),
    linear-gradient(180deg, #1e1e1e 0%, #1b1d21 52%, #17191c 100%);
  --panel: rgba(37, 37, 38, 0.82);
  --panel-border: rgba(255, 255, 255, 0.06);
  --text: #d4d4d4;
  --muted: #9da5b4;
  --primary: #569cd6;
  --primary-strong: #4a8dc5;
  --accent: #7aa2c8;
  --shadow: 0 18px 36px rgba(0, 0, 0, 0.24);
  --soft-surface: rgba(30, 30, 30, 0.94);
  --soft-panel: rgba(37, 37, 38, 0.94);
  --soft-border: rgba(255, 255, 255, 0.08);
  --glass-surface:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.01)),
    rgba(37, 37, 38, 0.34);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 12px 22px rgba(0, 0, 0, 0.12);
  --glass-inline-border: rgba(255, 255, 255, 0.07);
  --toast-surface:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02)),
    rgba(28, 30, 34, 0.78);
  --toast-border: rgba(255, 255, 255, 0.12);
  --code-bg: #111315;
  --code-text: #d7dee8;
  --focus-ring: rgba(86, 156, 214, 0.22);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  transition:
    background-color var(--duration-medium) var(--ease-standard),
    color var(--duration-medium) var(--ease-standard);
}

body {
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background: var(--bg-accent);
  transition:
    background var(--duration-medium) var(--ease-standard),
    opacity var(--duration-medium) var(--ease-standard),
    transform var(--duration-medium) var(--ease-standard);
}

body.theme-switching::before {
  transform: scale(1.015);
  opacity: 0.98;
}

button,
input,
select,
textarea {
  font: inherit;
  border-radius: var(--radius-sm);
}

button {
  border: 0;
  background: var(--primary);
  color: #f8fafc;
  padding: 0.74rem 1.08rem;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(63, 93, 125, 0.16);
  transition:
    transform var(--duration-fast) var(--ease-standard),
    background var(--duration-fast) var(--ease-standard),
    opacity var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard);
}

button:hover {
  transform: translateY(-1px);
  background: var(--primary-strong);
  box-shadow: 0 10px 22px rgba(63, 93, 125, 0.2);
}

button:active {
  transform: translateY(0) scale(0.985);
  box-shadow: 0 5px 14px rgba(63, 93, 125, 0.14);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.56;
  transform: none;
  box-shadow: none;
}

button.ghost {
  background: var(--soft-surface);
  color: var(--text);
  box-shadow: none;
  border: 1px solid var(--soft-border);
}

button.ghost:hover {
  box-shadow: 0 8px 18px rgba(37, 42, 51, 0.08);
}

button.small {
  padding: 0.45rem 0.85rem;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--soft-border);
  padding: 0.8rem 0.9rem;
  background: var(--soft-panel);
  color: var(--text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition:
    border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    background var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

select:disabled {
  color: var(--muted);
  cursor: not-allowed;
  opacity: 0.78;
}

textarea {
  resize: vertical;
}

input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  margin: 0;
  border: 1px solid var(--soft-border);
  border-radius: 6px;
  background: var(--soft-panel);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  flex: 0 0 auto;
}

input[type="checkbox"]::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: #f8fafc;
  transform: scale(0);
  transition: transform var(--duration-fast) var(--ease-standard);
}

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

input[type="checkbox"]:checked::before {
  transform: scale(1);
}

.page-shell {
  width: min(var(--page-max-width), calc(100% - 24px));
  margin: 0 auto;
  padding: 10px 0 12px;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(260px, var(--left-panel-width)) 10px minmax(0, 1fr);
  gap: 12px;
  align-items: stretch;
  min-height: calc(100vh - 22px);
}

.hero-copy,
.hero-card,
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  transition:
    background var(--duration-medium) var(--ease-standard),
    border-color var(--duration-medium) var(--ease-standard),
    box-shadow var(--duration-medium) var(--ease-standard),
    transform var(--duration-medium) var(--ease-standard);
}

.workspace-column {
  display: grid;
  gap: 12px;
  align-content: stretch;
  min-width: 0;
}

.workspace-left {
  grid-template-rows: minmax(180px, var(--left-top-height)) 10px minmax(320px, 1fr);
}

.workspace-right {
  grid-template-rows: minmax(220px, var(--right-top-height)) 10px minmax(320px, 1fr);
}

.workspace-divider {
  position: relative;
  cursor: col-resize;
  border-radius: 999px;
  background: transparent;
  opacity: 0.72;
}

.workspace-divider-horizontal {
  cursor: row-resize;
}

.workspace-divider::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, transparent 0%, var(--soft-border) 18%, var(--soft-border) 82%, transparent 100%);
  border-radius: 999px;
  transition:
    background var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    opacity var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.workspace-divider:hover::before,
.workspace-divider.is-dragging::before {
  background: var(--primary);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 12%, transparent);
  transform: translateX(-50%) scaleY(1.05);
}

.workspace-divider-horizontal::before {
  top: 50%;
  bottom: auto;
  left: 12px;
  right: 12px;
  width: auto;
  height: 2px;
  transform: translateY(-50%);
  background: linear-gradient(90deg, transparent 0%, var(--soft-border) 18%, var(--soft-border) 82%, transparent 100%);
}

.workspace-divider-horizontal:hover::before,
.workspace-divider-horizontal.is-dragging::before {
  transform: translateY(-50%) scaleX(1.05);
}

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

.brand-logo {
  width: 38px;
  height: 38px;
  color: var(--primary);
  flex: 0 0 auto;
}

.hero-copy {
  padding: 20px 22px;
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
}

.hero-copy h1 {
  margin: 0 0 14px;
  font-size: clamp(1.55rem, 2.9vw, 2.45rem);
  line-height: 1.14;
}

.hero-text {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
  max-width: 48ch;
}

.hero-copy-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: center;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--soft-border);
  color: var(--muted);
  font-size: 0.88rem;
}

.hero-copy-meta a {
  color: var(--primary);
  text-decoration: none;
  transition:
    color var(--duration-fast) var(--ease-standard),
    opacity var(--duration-fast) var(--ease-standard);
}

.hero-copy-meta a:hover {
  color: var(--primary-strong);
}

.hero-card {
  padding: 18px;
  display: grid;
  grid-template-rows: auto auto auto auto auto minmax(0, 1fr);
  align-content: stretch;
  gap: 10px;
  min-height: 0;
  overflow: hidden;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

body[data-theme="dark"] .hero-card {
  background: var(--soft-panel);
}

.stat-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--soft-border);
}

.stat-row:last-of-type {
  border-bottom: 0;
}

.panel {
  padding: 18px;
}

.panel-heading h2 {
  margin: 0 0 6px;
  font-size: 1.2rem;
}

.panel-heading p {
  margin: 0 0 18px;
  color: var(--muted);
}

.upload-panel,
.preview-panel {
  min-height: 320px;
}

.preview-panel {
  min-height: calc(100vh - 88px);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.dropzone {
  position: relative;
  border: 1px dashed var(--soft-border);
  border-radius: 22px;
  padding: 22px;
  text-align: center;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent), var(--soft-panel);
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition:
    border-color var(--duration-fast) var(--ease-standard),
    background var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.dropzone::after {
  content: "";
  position: absolute;
  inset: -40%;
  background: conic-gradient(
    from 0deg,
    transparent 0deg,
    transparent 300deg,
    rgba(255, 255, 255, 0.04) 324deg,
    rgba(255, 255, 255, 0.58) 342deg,
    rgba(255, 255, 255, 0.04) 360deg
  );
  opacity: 0;
  pointer-events: none;
  filter: blur(8px);
}

.dropzone.intro-glow::after {
  animation: dropzoneSweep 1800ms ease-out 1;
}

.dropzone.dragging {
  border-color: var(--accent);
  background: var(--soft-panel);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.04),
    0 0 0 3px rgba(88, 115, 143, 0.12);
}

.dropzone input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.dropzone p {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 600;
}

.dropzone span {
  color: var(--muted);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: end;
  margin-top: 12px;
}

.preview-toolbar {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.upload-toolbar {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.upload-toolbar .stack,
.preview-toolbar .stack {
  min-width: 0;
  width: 100%;
}

.upload-toolbar-actions,
.preview-toolbar-actions {
  margin-top: 10px;
}

.stack {
  display: grid;
  gap: 8px;
  min-width: 160px;
}

.stack span {
  color: var(--muted);
  font-size: 0.92rem;
}

.stack label {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--text);
}

.stack.grow,
.stack.full {
  flex: 1;
}

.file-list,
.preview-content,
.result-list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.preview-content {
  flex: 1 1 auto;
  min-height: 0;
  max-height: none;
  overflow: auto;
  padding-right: 6px;
  scrollbar-width: thin;
  scrollbar-color: rgba(98, 108, 123, 0.22) transparent;
}

.empty-state {
  padding: 18px;
  border-radius: 18px;
  background: var(--glass-surface);
  color: var(--muted);
  border: 1px dashed color-mix(in srgb, var(--glass-inline-border) 88%, transparent);
  text-align: center;
  justify-items: center;
  align-content: center;
  box-shadow: none;
  backdrop-filter: blur(14px) saturate(116%);
}

.file-row,
.result-card,
.preview-card {
  display: grid;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid color-mix(in srgb, var(--glass-inline-border) 92%, transparent);
  border-radius: 18px;
  background: var(--glass-surface);
  box-shadow: none;
  backdrop-filter: blur(14px) saturate(116%);
  transition:
    background var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.file-row:hover,
.result-card:hover,
.preview-card:hover {
  border-color: color-mix(in srgb, var(--primary) 14%, var(--glass-inline-border));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--primary) 6%, transparent);
}

.hero-card .result-list {
  margin-top: 4px;
  min-height: 0;
  height: 100%;
  overflow: hidden;
  grid-template-rows: minmax(0, 1fr) auto;
  align-content: stretch;
}

.result-items {
  display: grid;
  gap: 10px;
  align-content: start;
  min-height: 0;
  overflow: hidden;
}

.file-row {
  grid-template-columns: auto 1fr;
  align-items: start;
  column-gap: 12px;
}

.file-main {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.file-checkbox {
  grid-row: 1 / span 2;
  align-self: start;
  margin-top: 0.9rem;
}

.file-name-input {
  font-weight: 700;
}

.file-name-input:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--focus-ring);
  outline-offset: 1px;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--focus-ring);
}

.file-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  grid-column: 2;
  justify-self: start;
}

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

.file-meta,
.result-meta,
.preview-meta,
.muted {
  color: var(--muted);
  font-size: 0.92rem;
}

.result-card header,
.preview-card header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.timeline-tool {
  display: grid;
  gap: 12px;
  padding: 12px;
  border-radius: 16px;
  background: var(--glass-surface);
  border: 1px solid color-mix(in srgb, var(--glass-inline-border) 92%, transparent);
  box-shadow: none;
  backdrop-filter: blur(14px) saturate(116%);
  transition:
    background var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

.timeline-tool-header {
  display: grid;
  gap: 4px;
}

.timeline-tool-fields {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.timeline-tool-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  padding: 0.28rem 0.62rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-size: 0.84rem;
  border: 1px solid var(--soft-border);
}

.code-block {
  margin: 0;
  padding: 12px;
  border-radius: 16px;
  background: var(--code-bg);
  color: var(--code-text);
  overflow: auto;
  font-family: var(--mono);
  font-size: 0.88rem;
  line-height: 1.5;
}

.preview-card table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  table-layout: fixed;
}

.editor-table-wrap {
  position: relative;
  overflow: auto;
  max-height: min(62vh, 640px);
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, var(--glass-inline-border) 88%, transparent);
  background: color-mix(in srgb, var(--glass-surface) 88%, transparent);
  box-shadow: none;
  backdrop-filter: blur(12px) saturate(112%);
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: default;
}

.editor-table-wrap::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.editor-table-wrap::before,
.editor-table-wrap::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 22px;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-standard);
  z-index: 2;
}

.editor-table-wrap::before {
  left: 0;
  background: linear-gradient(90deg, color-mix(in srgb, var(--panel) 88%, transparent), transparent);
}

.editor-table-wrap::after {
  right: 0;
  background: linear-gradient(270deg, color-mix(in srgb, var(--panel) 88%, transparent), transparent);
}

.editor-table-wrap.has-overflow-left::before,
.editor-table-wrap.has-overflow-right::after {
  opacity: 1;
}

.editor-table-wrap.has-horizontal-overflow {
  cursor: ew-resize;
}

.editor-table-wrap.is-panning {
  cursor: grabbing;
  user-select: none;
}

.editor-table input,
.editor-table select,
.editor-table textarea {
  width: 100%;
  min-width: 0;
  padding: 0.55rem 0.65rem;
  border-radius: 10px;
}

.app-toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 9999;
  max-width: min(360px, calc(100vw - 32px));
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--toast-border);
  background: var(--toast-surface);
  color: var(--text);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(20px) saturate(132%);
  opacity: 0;
  transform: translateY(12px) scale(0.98);
  transition:
    opacity var(--duration-medium) var(--ease-standard),
    transform var(--duration-medium) var(--ease-standard);
}

.app-toast.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.scroll-top-button {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 46px;
  height: 46px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid var(--soft-border);
  background: color-mix(in srgb, var(--soft-surface) 94%, transparent);
  color: var(--text);
  box-shadow: 0 12px 28px rgba(37, 42, 51, 0.12);
  backdrop-filter: blur(12px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px) scale(0.92);
  transition:
    opacity var(--duration-medium) var(--ease-standard),
    transform var(--duration-medium) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    background var(--duration-fast) var(--ease-standard);
  z-index: 40;
}

.scroll-top-button svg {
  width: 18px;
  height: 18px;
}

.scroll-top-button.is-visible {
  opacity: 0.96;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.scroll-top-button.is-idle {
  opacity: 0.24;
  transform: translateY(2px) scale(0.96);
}

.scroll-top-button:hover,
.scroll-top-button:focus-visible {
  opacity: 1;
  transform: translateY(-1px) scale(1.03);
}

.editor-table td {
  min-width: 0;
}

.editor-table th,
.editor-table td {
  overflow: hidden;
}

.editor-table th {
  white-space: nowrap;
  text-overflow: ellipsis;
}

.editor-table textarea {
  min-height: 72px;
  line-height: 1.45;
}

.editor-table [data-column-kind="text"] textarea,
.editor-table [data-column-kind="long"] textarea {
  min-height: 96px;
}

.editor-table [data-column-kind="compact"] input,
.editor-table [data-column-kind="compact"] select,
.editor-table [data-column-kind="time"] input,
.editor-table [data-column-kind="time"] select {
  text-align: center;
  padding-left: 0.5rem;
  padding-right: 0.5rem;
}

.editor-table [data-column-kind="text"] input,
.editor-table [data-column-kind="text"] textarea,
.editor-table [data-column-kind="long"] input,
.editor-table [data-column-kind="long"] textarea,
.editor-table [data-column-kind="font"] input {
  font-family: var(--mono), var(--sans), monospace;
}

.section-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.pager {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 8px;
  justify-content: space-between;
  padding: 8px 0 2px;
}

.preview-content {
  align-content: start;
}

#raw-editor {
  width: 100%;
  margin-top: 16px;
  border: 0;
  flex: 1 1 auto;
  min-height: 0;
}

.preview-card th,
.preview-card td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--soft-border);
  vertical-align: top;
}

.hidden {
  display: none;
}

@supports not ((backdrop-filter: blur(1px))) {
  .hero-copy,
  .hero-card,
  .panel,
  .empty-state,
  .file-row,
  .result-card,
  .preview-card,
  .timeline-tool,
  .editor-table-wrap {
    background: var(--soft-panel);
  }
}

@keyframes dropzoneSweep {
  0% {
    opacity: 0;
    transform: rotate(0deg);
  }
  20% {
    opacity: 0.52;
  }
  80% {
    opacity: 0.2;
  }
  100% {
    opacity: 0;
    transform: rotate(360deg);
  }
}

@media (max-width: 1080px) {
  .workspace-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .workspace-grid > .workspace-divider {
    display: none;
  }

  .workspace-left,
  .workspace-right {
    grid-template-rows: auto;
  }

  .workspace-divider-horizontal {
    display: none;
  }

  .preview-panel {
    min-height: 520px;
  }

  .preview-content {
    max-height: none;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(var(--page-max-width), calc(100% - 12px));
    margin: 0 auto;
    padding: 6px 0 8px;
  }

  .panel,
  .hero-copy,
  .hero-card {
    padding: 14px;
    border-radius: 20px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .upload-toolbar-actions,
  .preview-toolbar-actions {
    margin-top: 12px;
  }

  .stack,
  .stack.grow,
  .stack.full {
    min-width: 0;
    width: 100%;
  }

  .file-row {
    column-gap: 10px;
  }

  .result-card header,
  .preview-card header {
    flex-direction: column;
    align-items: start;
  }

  .editor-table input,
  .editor-table select,
  .editor-table textarea {
    min-width: 80px;
    font-size: 16px;
  }

  .editor-table-wrap {
    max-height: 60vh;
  }

  .hero-copy h1 {
    font-size: 1.5rem;
  }

  .scroll-top-button {
    right: 12px;
    bottom: 12px;
    width: 42px;
    height: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}