:root {
  color-scheme: light;
  --bg: #edf2f6;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.94);
  --surface: rgba(247, 250, 252, 0.78);
  --surface-strong: rgba(255, 255, 255, 0.96);
  --line: rgba(15, 23, 42, 0.08);
  --line-strong: rgba(15, 23, 42, 0.12);
  --text: #0f172a;
  --muted: #6b7280;
  --accent: #0a84ff;
  --accent-soft: rgba(10, 132, 255, 0.12);
  --success: #0f8a5f;
  --warning: #d97706;
  --danger: #d14343;
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --shadow: 0 28px 70px rgba(15, 23, 42, 0.08);
  --shadow-soft: 0 12px 28px rgba(15, 23, 42, 0.06);
  --font-sans: "SF Pro Display", "SF Pro Text", "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  position: relative;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.95), transparent 38%),
    radial-gradient(circle at top right, rgba(173, 217, 255, 0.42), transparent 28%),
    radial-gradient(circle at bottom left, rgba(255, 224, 186, 0.18), transparent 22%),
    linear-gradient(180deg, #f8fafc 0%, var(--bg) 100%);
  color: var(--text);
  font-family: var(--font-sans);
}

button,
input,
select {
  font: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.ambient {
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  position: fixed;
}

.orb {
  border-radius: 50%;
  filter: blur(22px);
  position: absolute;
}

.orb-a {
  background: rgba(120, 196, 255, 0.22);
  height: 280px;
  left: 3%;
  top: 4%;
  width: 280px;
}

.orb-b {
  background: rgba(255, 221, 180, 0.20);
  height: 220px;
  right: 8%;
  top: 22%;
  width: 220px;
}

.orb-c {
  background: rgba(140, 173, 255, 0.16);
  bottom: 10%;
  height: 360px;
  right: 22%;
  width: 360px;
}

.app-shell {
  margin: 0 auto;
  max-width: 1520px;
  padding: 18px 20px 28px;
  position: relative;
  z-index: 1;
}

.panel {
  backdrop-filter: blur(24px);
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero-panel {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(248, 251, 255, 0.84)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.72));
  align-items: center;
  display: block;
  margin-bottom: 14px;
  padding: 16px 18px;
}

.hero-copy h1 {
  font-size: clamp(1.6rem, 0.9vw + 1.3rem, 2.35rem);
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0;
}

.hero-title {
  align-items: end;
  column-gap: 12px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  width: 100%;
}

.hero-title > :first-child {
  grid-column: 2;
  justify-self: center;
}

.hero-title-sub {
  color: var(--muted);
  font-size: 20px;
  font-weight: 600;
  grid-column: 3;
  justify-self: end;
  letter-spacing: -0.02em;
  padding-right: 22px;
  text-align: right;
  white-space: nowrap;
}

.hero-copy {
  width: 100%;
}

.count-pill {
  align-items: center;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.92);
  border-radius: 999px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
  color: var(--text);
  display: inline-flex;
  font-size: 0.82rem;
  font-weight: 600;
  justify-content: center;
  padding: 8px 12px;
}

.count-pill.subtle {
  color: var(--muted);
}

.count-pill.is-success {
  color: var(--success);
}

.count-pill.is-warning {
  color: var(--warning);
}

.workspace {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(360px, 470px) minmax(0, 1fr);
}

.controls-column,
.stage-column {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.upload-panel,
.controls-panel,
.preview-panel,
.results-panel {
  background: var(--panel-strong);
  padding: 18px;
}

.section-head {
  align-items: flex-start;
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
  display: flex;
  gap: 16px;
  justify-content: space-between;
  margin-bottom: 12px;
  padding-bottom: 10px;
}

.section-head h2 {
  font-size: 1.04rem;
  letter-spacing: -0.02em;
  margin: 0;
}

.section-head p {
  color: var(--muted);
  margin: 8px 0 0;
}

.dropzone {
  align-items: center;
  background: linear-gradient(180deg, rgba(248, 251, 255, 0.98), rgba(255, 255, 255, 0.82));
  border: 1.5px dashed rgba(10, 132, 255, 0.28);
  border-radius: var(--radius-lg);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: center;
  min-height: 118px;
  padding: 16px;
  text-align: center;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.dropzone:hover,
.dropzone.is-dragover {
  border-color: rgba(10, 132, 255, 0.54);
  box-shadow: 0 18px 30px rgba(10, 132, 255, 0.10);
  transform: translateY(-1px);
}

.dropzone input {
  display: none;
}

.dropzone strong {
  font-size: 0.95rem;
}

.dropzone-icon {
  align-items: center;
  background: rgba(10, 132, 255, 0.10);
  border-radius: 24px;
  color: var(--accent);
  display: inline-flex;
  height: 40px;
  justify-content: center;
  width: 40px;
}

.dropzone-icon svg {
  height: 20px;
  width: 20px;
}

.toolbar-row,
.action-bar {
  display: flex;
  gap: 12px;
}

.toolbar-row {
  margin: 10px 0;
}

.toolbar-row .ghost-button {
  flex: 1;
}

.file-list,
.result-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 280px;
  overflow: auto;
  padding-right: 4px;
}

.file-list::-webkit-scrollbar,
.result-list::-webkit-scrollbar {
  width: 10px;
}

.file-list::-webkit-scrollbar-thumb,
.result-list::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.25);
  border-radius: 999px;
}

.file-item,
.result-item {
  align-items: center;
  background: var(--surface-strong);
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 18px;
  content-visibility: auto;
  contain-intrinsic-size: 78px;
  cursor: pointer;
  display: grid;
  gap: 12px;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  position: relative;
  padding: 10px 12px;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.file-item {
  padding-right: 44px;
}

.file-remove-button {
  align-items: center;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 999px;
  color: #64748b;
  cursor: pointer;
  display: inline-flex;
  font-size: 0.95rem;
  font-weight: 700;
  height: 22px;
  justify-content: center;
  line-height: 1;
  padding: 0;
  position: absolute;
  right: 10px;
  top: 10px;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
  width: 22px;
  z-index: 2;
}

.file-remove-button:hover {
  background: rgba(255, 255, 255, 1);
  border-color: rgba(209, 67, 67, 0.28);
  color: var(--danger);
  transform: scale(1.04);
}

.file-remove-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.file-item:hover,
.result-item:hover {
  border-color: rgba(10, 132, 255, 0.3);
  box-shadow: var(--shadow-soft);
  transform: translateY(-1px);
}

.file-item.is-active,
.result-item.is-active {
  border-color: rgba(10, 132, 255, 0.45);
  box-shadow: 0 20px 38px rgba(10, 132, 255, 0.12);
}

.thumb {
  background:
    linear-gradient(45deg, rgba(226, 232, 240, 0.82) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(226, 232, 240, 0.82) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(226, 232, 240, 0.82) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(226, 232, 240, 0.82) 75%);
  background-color: #f8fafc;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
  background-size: 20px 20px;
  border-radius: 14px;
  height: 56px;
  overflow: hidden;
  width: 56px;
}

.thumb img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.item-meta {
  min-width: 0;
}

.item-meta strong {
  display: block;
  font-size: 0.98rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.item-meta span,
.item-meta small {
  color: var(--muted);
  display: block;
  margin-top: 4px;
}

.item-meta .result-note {
  color: var(--success);
  font-weight: 600;
}

.status-dot {
  align-self: flex-start;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 8px 11px;
  white-space: nowrap;
}

.status-ready {
  background: rgba(148, 163, 184, 0.14);
  color: #475569;
}

.status-processing {
  background: rgba(217, 119, 6, 0.12);
  color: var(--warning);
}

.status-done {
  background: rgba(15, 138, 95, 0.12);
  color: var(--success);
}

.status-error {
  background: rgba(209, 67, 67, 0.12);
  color: var(--danger);
}

.tool-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(249, 251, 253, 0.86));
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 20px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
  margin-top: 10px;
  padding: 14px;
  --tool-indent: 46px;
}

.preset-card {
  --tool-indent: 0;
}

.tool-card.is-collapsed .tool-body {
  display: none;
}

.tool-card.is-collapsed {
  padding-bottom: 12px;
}

.attention-flash {
  animation: attentionFlash 250ms ease;
}

.attention-flash-target {
  position: relative;
  z-index: 1;
}

@keyframes attentionFlash {
  0% {
    box-shadow: 0 0 0 0 rgba(10, 132, 255, 0);
    transform: translateY(0);
  }
  35% {
    box-shadow: 0 0 0 4px rgba(10, 132, 255, 0.18), 0 10px 20px rgba(10, 132, 255, 0.12);
    transform: translateY(-1px);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(10, 132, 255, 0);
    transform: translateY(0);
  }
}

.attention-flash-target.attention-flash {
  animation: attentionFlashTarget 250ms ease;
}

@keyframes attentionFlashTarget {
  0% {
    box-shadow: 0 0 0 0 rgba(10, 132, 255, 0);
    border-color: rgba(148, 163, 184, 0.22);
    transform: translateY(0);
  }
  35% {
    box-shadow: 0 0 0 4px rgba(10, 132, 255, 0.16), 0 10px 18px rgba(10, 132, 255, 0.10);
    border-color: rgba(10, 132, 255, 0.52);
    transform: translateY(-1px);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(10, 132, 255, 0);
    border-color: rgba(148, 163, 184, 0.22);
    transform: translateY(0);
  }
}

.switch-row {
  align-items: flex-start;
  display: flex;
  gap: 18px;
  justify-content: space-between;
}

.step-heading {
  align-items: flex-start;
  display: grid;
  gap: 10px;
  grid-template-columns: auto minmax(0, 1fr);
}

.step-badge {
  align-items: center;
  background: rgba(10, 132, 255, 0.08);
  border: 1px solid rgba(10, 132, 255, 0.12);
  border-radius: 11px;
  color: #0a5ccf;
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 700;
  height: 28px;
  justify-content: center;
  letter-spacing: 0.06em;
  min-width: 36px;
  padding: 0 8px;
}

.step-copy strong,
.switch-row strong {
  display: block;
  font-size: 0.95rem;
}

.step-copy small,
.switch-row small {
  color: var(--muted);
  display: block;
  margin-top: 4px;
  line-height: 1.6;
}

.switch input {
  display: none;
}

.switch-track {
  background: rgba(148, 163, 184, 0.4);
  border-radius: 999px;
  display: block;
  height: 32px;
  position: relative;
  transition: background 180ms ease;
  width: 54px;
}

.switch-track::after {
  background: #ffffff;
  border-radius: 50%;
  box-shadow: 0 6px 12px rgba(15, 23, 42, 0.14);
  content: "";
  height: 24px;
  left: 4px;
  position: absolute;
  top: 4px;
  transition: transform 180ms ease;
  width: 24px;
}

.switch input:checked + .switch-track {
  background: rgba(10, 132, 255, 0.75);
}

.switch input:checked + .switch-track::after {
  transform: translateX(22px);
}

.tool-body {
  display: grid;
  gap: 10px;
  margin-top: 12px;
  padding-left: var(--tool-indent);
  padding-top: 10px;
  border-top: 1px solid rgba(148, 163, 184, 0.12);
}

.field-grid {
  display: grid;
  gap: 12px;
}

.field-grid.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.preset-layout {
  display: grid;
  column-gap: 48px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  row-gap: 28px;
}

.preset-buttons {
  display: grid;
}

.preset-buttons > .ghost-button {
  min-height: 42px;
  width: 100%;
}

.field {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.field span {
  color: #334155;
  font-size: 0.92rem;
  font-weight: 600;
}

.field input,
.field select {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 16px;
  color: var(--text);
  height: 42px;
  line-height: 42px;
  min-height: 42px;
  min-width: 0;
  outline: none;
  padding: 0 12px;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
  width: 100%;
}

.field select {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, currentColor 50%),
    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position:
    calc(100% - 18px) 50%,
    calc(100% - 13px) 50%;
  background-repeat: no-repeat;
  background-size: 5px 5px, 5px 5px;
  padding-right: 36px;
}

.field input:focus,
.field select:focus {
  border-color: rgba(10, 132, 255, 0.5);
  box-shadow: 0 0 0 4px rgba(10, 132, 255, 0.12);
}

.field.inline-field {
  align-items: center;
  grid-template-columns: minmax(0, 1fr) 72px;
}

.field.inline-field input {
  padding: 6px;
}

.export-target-row {
  align-items: center;
  display: grid;
  gap: 12px;
  grid-template-columns: auto minmax(0, 1fr);
}

.directory-chip {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 18px;
  color: var(--text);
  min-height: 42px;
  overflow: hidden;
  padding: 11px 14px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.directory-chip.is-empty {
  color: var(--muted);
}

.check-row {
  align-items: center;
  color: var(--muted);
  display: flex;
  gap: 10px;
}

.check-row input {
  accent-color: var(--accent);
  height: 18px;
  margin: 0;
  width: 18px;
}

.split-field {
  gap: 12px;
}

.anchor-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, 1fr);
}

.anchor-button {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 14px;
  min-height: 38px;
  position: relative;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.anchor-button::before {
  background: rgba(148, 163, 184, 0.42);
  border-radius: 50%;
  content: "";
  height: 10px;
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
}

.anchor-button:hover,
.anchor-button.is-active {
  border-color: rgba(10, 132, 255, 0.46);
  box-shadow: 0 8px 18px rgba(10, 132, 255, 0.12);
  transform: translateY(-1px);
}

.anchor-button.is-active::before {
  background: var(--accent);
}

.range-field {
  gap: 12px;
}

.range-wrap {
  align-items: center;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr) auto;
}

.range-wrap input[type="range"] {
  accent-color: var(--accent);
  padding: 0;
}

.hint-text {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.35;
  margin: 0;
}

.hint-text:empty {
  display: none;
}

.primary-button,
.ghost-button,
.download-button {
  align-items: center;
  border-radius: 18px;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  font-weight: 700;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}

.primary-button {
  background: linear-gradient(135deg, #0a84ff, #0071e3);
  box-shadow: 0 18px 30px rgba(10, 132, 255, 0.24);
  color: #ffffff;
}

.ghost-button,
.download-button {
  background: rgba(255, 255, 255, 0.88);
  border-color: rgba(148, 163, 184, 0.2);
  color: var(--text);
}

#overwriteExportButton {
  background: rgba(10, 132, 255, 0.08);
  border-color: rgba(10, 132, 255, 0.14);
  color: #0a5ccf;
}

.primary-button:hover,
.ghost-button:hover,
.download-button:hover {
  transform: translateY(-1px);
}

.primary-button:disabled,
.ghost-button:disabled,
.download-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.status-panel,
.summary-strip {
  background: var(--surface);
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 22px;
}

.action-bar {
  background: rgba(247, 250, 252, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 18px;
  margin-top: 12px;
  padding: 8px;
}

.action-bar > button {
  flex: 1 1 0;
  min-width: 0;
}

.status-panel {
  color: var(--muted);
  line-height: 1.6;
  margin-top: 10px;
  padding: 10px 12px;
}

.status-panel:empty {
  display: none;
}

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

.preview-head {
  align-items: center;
}

.preview-head-main {
  align-items: center;
  display: flex;
  gap: 10px;
  min-width: 0;
}

.panel-note {
  color: var(--muted);
  font-size: 0.86rem;
  margin: 0;
  text-align: left;
  white-space: nowrap;
}

.preview-card {
  background: var(--surface-strong);
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: 20px;
  overflow: hidden;
}

.preview-label {
  align-items: center;
  display: flex;
  gap: 8px;
  justify-content: space-between;
  padding: 10px 12px 0;
}

.preview-label span {
  color: var(--muted);
  font-size: 0.88rem;
  text-align: right;
}

.preview-frame {
  align-items: center;
  background:
    linear-gradient(45deg, rgba(226, 232, 240, 0.82) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(226, 232, 240, 0.82) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(226, 232, 240, 0.82) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(226, 232, 240, 0.82) 75%);
  background-color: #f8fafc;
  background-position: 0 0, 0 16px, 16px -16px, -16px 0;
  background-size: 32px 32px;
  display: flex;
  height: min(24vw, 250px);
  justify-content: center;
  margin: 10px;
  overflow: hidden;
  position: relative;
  border-radius: 16px;
}

.preview-frame img {
  height: 100%;
  object-fit: contain;
  width: 100%;
}

.preview-placeholder {
  color: rgba(100, 116, 139, 0.82);
  font-size: 0.86rem;
  max-width: 240px;
  padding: 14px;
  position: absolute;
  text-align: center;
}

.summary-strip {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 10px;
  padding: 12px;
}

.summary-strip span {
  color: var(--muted);
  display: block;
  font-size: 0.86rem;
}

.summary-strip strong {
  display: block;
  font-size: 1rem;
  letter-spacing: -0.02em;
  margin-top: 4px;
}

.result-item {
  grid-template-columns: 64px minmax(0, 1fr) auto;
}

.result-actions {
  align-items: flex-end;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.result-actions small {
  color: var(--muted);
  text-align: right;
}

.empty-state {
  align-items: center;
  background: rgba(248, 250, 252, 0.92);
  border: 1px dashed rgba(148, 163, 184, 0.2);
  border-radius: 20px;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100px;
  padding: 16px;
  text-align: center;
}

.empty-state strong {
  color: var(--text);
  display: block;
}

.is-hidden {
  display: none !important;
}

@media (max-width: 1260px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .preview-frame {
    height: 240px;
  }
}

@media (max-width: 900px) {
  .app-shell {
    padding: 12px 10px 20px;
  }

  .hero-panel {
    padding: 14px 16px;
  }

  .hero-title {
    align-items: baseline;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 8px;
    justify-content: center;
    text-align: center;
    white-space: nowrap;
  }

  .hero-title > :first-child {
    justify-self: auto;
  }

  .hero-title-sub {
    display: none;
    font-size: 0.72em;
    padding-right: 0;
    text-align: center;
  }

  .field-grid.two-col,
  .summary-strip,
  .preview-grid {
    grid-template-columns: 1fr;
  }

  .preset-layout {
    grid-template-columns: 1fr;
  }

  .export-target-row {
    grid-template-columns: 1fr;
  }

  .tool-body {
    padding-left: 0;
  }

  .preview-frame {
    height: 200px;
  }

  .toolbar-row,
  .action-bar {
    flex-direction: column;
  }
}