:root {
  --ink: #12141b;
  --ink-soft: #4a5475;
  --paper: #ffffff;
  --sky: #4f86ff;
  --sky-dark: #295ed0;
  --sky-soft: #dce8ff;
  --lime: #93ea62;
  --cream: #fff5d3;
  --line: #12141b;
  --danger: #c12828;
  --shadow: 4px 4px 0 var(--line);
  --pages-col: clamp(188px, 13.5vw, 226px);
  --tool-col: clamp(120px, 8.2vw, 136px);
  --props-col: clamp(214px, 15.4vw, 248px);
  --font-ui: "VT323", monospace;
  --font-korean: "Gaegu", cursive;
}

* {
  box-sizing: border-box;
}

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

html[lang="ko"] {
  --font-ui: var(--font-korean);
}

body {
  position: relative;
  overflow: hidden;
  font-family: "Gaegu", cursive;
  color: var(--ink);
  background: #f4f7ff;
}

body::before,
body::after {
  content: "";
  position: fixed;
  left: 3%;
  width: 94%;
  border: 3px solid var(--line);
  border-radius: 60px;
  background: linear-gradient(180deg, #76a7ff, #5a93ff);
  z-index: 0;
}

body::before {
  top: 25%;
  height: 190px;
}

body::after {
  top: 63%;
  height: 210px;
}

.app-shell {
  position: relative;
  z-index: 1;
  height: 100%;
  width: 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px;
  overflow: hidden;
}

.topbar {
  background: var(--paper);
  border: 3px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 10px 14px;
}

.lang-toggle-btn {
  position: relative;
  flex: 0 0 auto;
  min-width: 134px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 16px;
  background: linear-gradient(180deg, #fafdff 0%, #dbe7ff 100%);
  box-shadow:
    3px 3px 0 var(--line),
    inset 0 -2px 0 rgba(35, 62, 116, 0.22);
  align-self: flex-start;
}

.lang-toggle-btn::before {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 11px;
  border: 1px dashed rgba(58, 94, 173, 0.45);
  pointer-events: none;
}

.lang-toggle-btn .flag-chip {
  position: relative;
  z-index: 1;
  width: 42px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--line);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: 1px 1px 0 rgba(18, 20, 27, 0.45);
  transition:
    transform 0.14s ease,
    background-color 0.14s ease,
    box-shadow 0.14s ease;
}

.lang-toggle-btn .flag-icon {
  font-size: 1.22rem;
  line-height: 1;
  transform: translateY(-1px);
}

.lang-toggle-btn .flag-swap {
  position: relative;
  z-index: 1;
  font-family: var(--font-ui);
  font-size: 1.35rem;
  line-height: 1;
  color: #2f55b3;
  text-shadow: 1px 1px 0 #ffffff;
}

.lang-toggle-btn[data-lang="en"] .flag-chip-us,
.lang-toggle-btn[data-lang="ko"] .flag-chip-kr {
  background: linear-gradient(180deg, #f9ffcf 0%, #c3f59d 100%);
  box-shadow:
    0 0 0 2px #7de15d,
    2px 2px 0 rgba(18, 20, 27, 0.55);
  transform: translate(-1px, -1px) scale(1.03);
}

.lang-toggle-btn:hover .flag-chip {
  transform: translateY(-1px);
}

.lang-toggle-btn[data-lang="en"]:hover .flag-chip-us,
.lang-toggle-btn[data-lang="ko"]:hover .flag-chip-kr {
  transform: translate(-1px, -2px) scale(1.05);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
  flex: 0 1 auto;
}

.brand-copy {
  min-width: 0;
}

.brand-dot {
  width: 18px;
  height: 18px;
  border: 2px solid var(--line);
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #bdfc8b, #59ce38);
}

.brand h1 {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 2.05rem;
  line-height: 1;
}

.brand p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
}

.brand-motion {
  margin-left: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.logo-marquee {
  position: relative;
  width: clamp(140px, 13vw, 188px);
  height: 52px;
  border: 3px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(180deg, #7df16d 0%, #53e25c 55%, #35cb47 100%);
  box-shadow: 2px 2px 0 var(--line), inset 0 -2px 0 rgba(0, 0, 0, 0.18);
  overflow: hidden;
}

.logo-marquee::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.08) 0,
    rgba(255, 255, 255, 0.08) 2px,
    rgba(255, 255, 255, 0) 2px,
    rgba(255, 255, 255, 0) 6px
  );
  pointer-events: none;
}

.logo-track {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translate(100%, -50%);
  width: max-content;
  will-change: transform;
  animation: logo-glide 8s linear infinite;
}

.logo-word {
  display: inline-block;
  font-family: "VT323", monospace;
  font-size: clamp(2.1rem, 2.7vw, 2.7rem);
  line-height: 1;
  letter-spacing: 0.06em;
  color: #ffffff;
  transform: skewX(-12deg);
  text-shadow:
    -2px 0 #0f1118,
    2px 0 #0f1118,
    0 -2px #0f1118,
    0 2px #0f1118,
    4px 3px 0 #0f1118,
    6px 5px 0 rgba(0, 0, 0, 0.4);
  padding: 3px 10px 2px 8px;
}

.star-spinner {
  position: relative;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: retro-spin 11s linear infinite;
  transform-origin: 50% 50%;
  filter: drop-shadow(0 2px 5px rgba(126, 92, 9, 0.35));
}

.star-spinner::before {
  content: "";
  position: absolute;
  inset: 0;
  clip-path: polygon(
    50% 4%,
    63% 31%,
    95% 36%,
    72% 57%,
    80% 92%,
    50% 76%,
    20% 92%,
    28% 57%,
    5% 36%,
    37% 31%
  );
  background:
    radial-gradient(125% 105% at 38% 30%, #ffe45a 0%, #ffd629 38%, #f0be06 72%, #cd9300 100%);
  border-radius: 12px;
  box-shadow:
    inset -2px -5px 9px rgba(140, 90, 0, 0.28),
    inset 2px 2px 4px rgba(255, 210, 40, 0.34);
}

.star-core {
  display: none;
}

.topbar-actions {
  margin-left: auto;
  min-width: 0;
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 6px;
}

@keyframes logo-glide {
  0% {
    transform: translate(120%, -50%);
  }

  100% {
    transform: translate(-125%, -50%);
  }
}

@keyframes retro-spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

#fileInput {
  display: none;
}

.file-label,
.primary-btn,
.ghost-btn,
.tool-btn,
.ghost-input,
.property-panel select {
  border: 3px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  box-shadow: 2px 2px 0 var(--line);
  font-family: var(--font-ui);
  font-size: 1.36rem;
  line-height: 1;
}

.file-label,
.primary-btn,
.ghost-btn,
.ghost-input {
  padding: 9px 13px;
}

.tool-btn {
  padding: 10px;
  text-align: left;
}

.tool-rail .tool-btn {
  width: 100%;
  display: block;
  padding: 8px 7px;
  font-size: 1.08rem;
  line-height: 1.08;
  letter-spacing: 0.01em;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.file-label,
.primary-btn,
.ghost-btn,
.tool-btn {
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.12s ease;
}

.file-label:hover,
.primary-btn:hover,
.ghost-btn:hover,
.tool-btn:hover {
  transform: translate(-1px, -1px);
}

.file-label:active,
.primary-btn:active,
.ghost-btn:active,
.tool-btn:active {
  transform: translate(1px, 1px);
  box-shadow: none;
}

.ghost-input {
  min-width: 136px;
  cursor: pointer;
  appearance: none;
}

.primary-btn {
  background: linear-gradient(180deg, var(--sky), var(--sky-dark));
  color: #fff;
}

.ghost-btn {
  background: var(--sky-soft);
}

.ghost-btn[disabled],
.primary-btn[disabled] {
  opacity: 0.45;
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.workspace {
  flex: 1;
  width: 100%;
  min-height: 0;
  min-width: 0;
  display: grid;
  grid-template-columns: var(--pages-col) minmax(0, 1fr);
  gap: 10px;
}

.thumbnail-panel,
.tool-rail,
.stage-panel,
.property-panel {
  min-width: 0;
  border: 3px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.thumbnail-panel {
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
  background: #dce8ff;
}

.panel-heading h2,
.property-panel h2 {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 1.6rem;
}

.panel-heading p {
  margin: 2px 0 0;
  color: var(--ink-soft);
  font-size: 1rem;
}

.thumbnail-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow: auto;
  padding-right: 4px;
}

.thumbnail-item {
  border: 3px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: 2px 2px 0 var(--line);
  padding: 8px;
  display: grid;
  gap: 6px;
  cursor: pointer;
}

.thumbnail-item.active {
  background: #f5ffec;
  border-color: #205fc7;
}

.thumbnail-item canvas {
  width: 100%;
  border: 2px solid #c6d5fb;
  border-radius: 4px;
  background: #fff;
}

.thumb-label {
  font-family: var(--font-ui);
  font-size: 1.3rem;
  color: var(--ink-soft);
}

.editor-surface {
  width: 100%;
  min-height: 0;
  min-width: 0;
  display: grid;
  grid-template-columns: var(--tool-col) minmax(0, 1fr) var(--props-col);
  gap: 10px;
}

.tool-rail {
  background: #ebffd9;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
}

.tool-btn.active {
  background: #dce8ff;
  border-color: #205fc7;
}

.tool-btn.danger {
  color: var(--danger);
}

.stage-panel {
  min-width: 0;
  min-height: 0;
  background: #fdfdff;
  display: flex;
  flex-direction: column;
}

.stage-toolbar {
  border-bottom: 3px solid var(--line);
  background: #edf4ff;
  padding: 8px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.stage-toolbar .ghost-btn {
  font-size: 1.22rem;
  padding: 8px 10px;
}

#pagePositionLabel {
  font-size: 1.2rem;
}

.zoom-control {
  font-family: var(--font-ui);
  font-size: 1.28rem;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.zoom-slider {
  width: 118px;
  accent-color: #2e66d9;
  cursor: pointer;
}

.zoom-slider:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.zoom-value {
  min-width: 58px;
  text-align: right;
  font-family: var(--font-ui);
  font-size: 1.32rem;
  color: var(--ink);
}

.zoom-mini-btn {
  min-width: 42px;
  text-align: center;
  padding: 6px 8px !important;
}

.toolbar-divider {
  width: 2px;
  height: 24px;
  background: #8ea9e8;
}

.drop-hint {
  margin: 10px;
  border: 3px dashed #4178dd;
  border-radius: 10px;
  padding: 12px;
  background: #ecf4ff;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 1.38rem;
  color: #2c63ca;
}

.drop-hint.hidden {
  display: none;
}

.stage-scroller {
  flex: 1;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  padding: 14px;
  background:
    radial-gradient(circle at 12px 12px, #d8e6ff 2px, transparent 2px) 0 0 /
      22px 22px,
    #eff4ff;
}

.page-stage {
  min-height: 100%;
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
  width: max-content;
  min-width: 100%;
}

.pdf-page {
  position: relative;
  flex: 0 0 auto;
  border: 3px solid var(--line);
  border-radius: 4px;
  box-shadow: 6px 6px 0 rgba(16, 18, 24, 0.35);
  overflow: hidden;
}

.pdf-page canvas {
  display: block;
}

.bg-canvas {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
}

.draw-canvas {
  position: absolute;
  inset: 0;
  z-index: 3;
  width: 100%;
  height: 100%;
}

.pdf-page .canvas-container {
  position: absolute !important;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  z-index: 4;
}

.pdf-page .canvas-container canvas {
  width: 100% !important;
  height: 100% !important;
}

.inline-editor-input {
  position: absolute;
  z-index: 8;
  margin: 0;
  border: 1px dashed #1f74e8;
  background: rgba(255, 255, 255, 0.96);
  outline: none;
  padding: 0;
  overflow: hidden;
  box-sizing: border-box;
  border-radius: 0;
  caret-color: #111827;
  font-kerning: normal;
  letter-spacing: normal;
}

.pdf-page .upper-canvas {
  touch-action: none;
}

.status-line {
  border-top: 3px solid var(--line);
  background: #fff;
  padding: 8px 12px;
  font-family: var(--font-ui);
  font-size: 1.32rem;
  color: var(--ink-soft);
}

.property-panel {
  min-height: 0;
  background: var(--cream);
  padding: 12px;
  display: grid;
  grid-auto-rows: min-content;
  gap: 10px;
  overflow: auto;
  align-content: start;
}

.panel-title-row {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.panel-title-row h2 {
  margin: 0;
}

.panel-link-btn {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  text-decoration: none;
  min-width: 96px;
  min-height: 68px;
  text-align: center;
  line-height: 1.1;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
  font-size: 1.16rem;
  padding: 6px 10px;
  min-width: 0;
  box-sizing: border-box;
}

.panel-quick-actions {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  align-items: stretch;
}

.panel-quick-actions .panel-link-btn {
  width: 100%;
  height: 86px;
  min-height: 86px;
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: linear-gradient(180deg, #dce8ff 0%, #c8d6f4 100%);
  box-shadow:
    3px 3px 0 var(--line),
    inset 0 -2px 0 rgba(20, 38, 88, 0.18);
  font-size: 0.9rem;
  line-height: 1.02;
  letter-spacing: 0;
  white-space: normal;
  overflow: hidden;
  padding: 8px 8px 7px;
}

.panel-link-icon {
  display: block;
  font-size: 1.32rem;
  line-height: 1;
}

.panel-link-text {
  display: block;
  width: 100%;
  text-align: center;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.86rem;
  line-height: 1.05;
  min-width: 0;
}

.property-panel label {
  display: grid;
  gap: 4px;
  color: var(--ink-soft);
  font-size: 1.02rem;
  border: 2px solid #b8c8ea;
  border-radius: 10px;
  background: #f8fbff;
  padding: 6px 8px;
}

.slider-value {
  justify-self: end;
  font-size: 1.05rem;
  color: var(--ink-soft);
}

.text-tune-panel,
.font-inspector-panel {
  margin-top: 4px;
  border: 3px solid var(--line);
  border-radius: 12px;
  background: #eef6ff;
  padding: 10px;
  display: grid;
  gap: 8px;
  grid-column: 1 / -1;
}

.text-tune-panel h3,
.font-inspector-panel h3 {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 1.4rem;
}

.text-tune-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.text-tune-actions .ghost-btn {
  width: 100%;
  text-align: center;
}

.vector-export-toggle {
  display: flex !important;
  align-items: center;
  gap: 8px !important;
  border: 2px solid #b9cdec;
  border-radius: 10px;
  background: #fff;
  padding: 8px;
}

.vector-export-toggle input {
  width: 18px;
  height: 18px;
}

.font-inspector-row {
  border: 2px solid #b9cdec;
  border-radius: 9px;
  background: #fff;
  padding: 7px 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-family: var(--font-ui);
  font-size: 1.1rem;
}

.font-inspector-row strong {
  text-align: right;
  max-width: 70%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.font-inspector-note {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.property-panel input[type="range"],
.property-panel select {
  width: 100%;
}

.property-panel input[type="number"] {
  width: 100%;
  border: 3px solid var(--line);
  border-radius: 10px;
  box-shadow: 2px 2px 0 var(--line);
  background: #fff;
  padding: 8px;
  font-family: var(--font-ui);
  font-size: 1.25rem;
}

.property-panel select {
  padding: 8px;
}

.property-panel input[type="color"] {
  width: 100%;
  height: 36px;
  border: 3px solid var(--line);
  border-radius: 10px;
  box-shadow: 2px 2px 0 var(--line);
  background: #fff;
  padding: 3px;
}

.split-panel {
  margin-top: 6px;
  border: 3px solid var(--line);
  border-radius: 12px;
  background: #f0ffd8;
  padding: 10px;
  display: grid;
  gap: 8px;
  grid-column: 1 / -1;
}

.split-panel.flash-highlight {
  animation: panel-flash 0.9s ease;
}

.split-panel h3 {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 1.45rem;
}

.split-note {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.split-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.split-row label {
  gap: 3px;
}

.split-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.split-actions .ghost-btn {
  width: 100%;
  text-align: center;
}

.split-range-list {
  display: grid;
  gap: 6px;
  max-height: 132px;
  overflow: auto;
}

.split-range-item {
  border: 2px solid var(--line);
  border-radius: 9px;
  background: #fff;
  padding: 6px 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: space-between;
  font-family: var(--font-ui);
  font-size: 1.2rem;
}

.split-range-item button {
  border: 2px solid var(--line);
  border-radius: 8px;
  background: #fff1ef;
  color: var(--danger);
  padding: 2px 8px;
  font-family: var(--font-ui);
  font-size: 1.1rem;
  cursor: pointer;
}

.split-merge {
  display: flex !important;
  align-items: center;
  gap: 8px !important;
  color: var(--ink);
}

.split-merge input {
  width: 18px;
  height: 18px;
}

#splitPdfBtn {
  width: 100%;
  text-align: center;
}

@keyframes panel-flash {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.35);
  }

  30% {
    box-shadow: 0 0 0 8px rgba(37, 99, 235, 0.24);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
  }
}

@media (max-width: 1360px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .topbar-actions {
    justify-content: flex-start;
    margin-left: 0;
  }

  .brand-motion {
    margin-left: auto;
  }
}

@media (max-width: 1080px) {
  .logo-marquee {
    width: 142px;
    height: 44px;
  }

  .logo-word {
    font-size: 2.1rem;
  }

  .star-spinner {
    width: 42px;
    height: 42px;
  }

  .star-core {
    display: none;
  }
}

@media (max-width: 980px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .thumbnail-panel {
    max-height: 220px;
  }

  .thumbnail-list {
    flex-direction: row;
  }

  .thumbnail-item {
    min-width: 160px;
  }

  .editor-surface {
    grid-template-columns: 120px minmax(0, 1fr);
  }

  .property-panel {
    grid-column: span 2;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .text-tune-panel,
  .font-inspector-panel,
  .split-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 900px) {
  body::before,
  body::after {
    border-radius: 40px;
  }

  .editor-surface {
    grid-template-columns: 1fr;
  }

  .tool-rail {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .property-panel {
    grid-column: 1;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .brand-motion {
    display: none;
  }
}

@media (max-width: 768px) {
  body {
    overflow: hidden;
  }

  .app-shell {
    height: 100dvh;
    gap: 8px;
    padding: 8px;
    padding-bottom: calc(8px + env(safe-area-inset-bottom));
  }

  .topbar {
    gap: 8px;
    padding: 8px 10px;
    border-radius: 14px;
  }

  .brand {
    gap: 8px;
  }

  .brand h1 {
    font-size: 1.52rem;
  }

  .brand p {
    font-size: 0.85rem;
  }

  .topbar-actions {
    width: 100%;
    margin-left: 0;
    justify-content: flex-start;
    gap: 6px;
  }

  .file-label,
  .primary-btn,
  .ghost-btn,
  .ghost-input,
  .tool-btn {
    font-size: 1.06rem;
  }

  .workspace {
    gap: 8px;
    min-height: 0;
  }

  .thumbnail-panel {
    padding: 8px;
    max-height: 182px;
  }

  .thumbnail-list {
    flex-direction: row;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    gap: 6px;
    padding-right: 0;
    padding-bottom: 2px;
  }

  .thumbnail-item {
    min-width: 116px;
    width: 116px;
    padding: 6px;
    scroll-snap-align: start;
  }

  .thumb-label {
    font-size: 1rem;
  }

  .editor-surface {
    grid-template-columns: 1fr;
    gap: 8px;
    min-height: 0;
  }

  .tool-rail {
    order: 2;
    display: flex;
    flex-direction: row;
    gap: 6px;
    padding: 8px;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
  }

  .tool-rail .tool-btn {
    width: auto;
    min-width: 102px;
    flex: 0 0 auto;
    text-align: center;
    font-size: 1rem;
    line-height: 1.1;
    padding: 8px 9px;
  }

  .stage-panel {
    order: 1;
    min-height: 0;
  }

  .stage-toolbar {
    gap: 6px;
    padding: 7px;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .stage-toolbar .ghost-btn {
    font-size: 1rem;
    padding: 6px 8px;
  }

  .zoom-control {
    font-size: 1.05rem;
  }

  .zoom-slider {
    width: 90px;
  }

  .zoom-value {
    min-width: 46px;
    font-size: 1.05rem;
  }

  .zoom-mini-btn {
    min-width: 34px;
    padding: 5px 6px !important;
  }

  .drop-hint {
    margin: 8px;
    padding: 10px;
    font-size: 1.06rem;
  }

  .stage-scroller {
    padding: 8px;
  }

  .status-line {
    padding: 6px 8px;
    font-size: 1.05rem;
  }

  .property-panel {
    order: 3;
    grid-column: 1;
    grid-template-columns: 1fr;
    padding: 8px;
    gap: 8px;
  }

  .property-panel h2 {
    font-size: 1.3rem;
    grid-column: 1 / -1;
  }

  .panel-title-row {
    grid-column: 1 / -1;
  }

  .panel-link-btn {
    min-width: 74px;
    min-height: 54px;
    font-size: 1.02rem;
    padding: 5px 8px;
  }

  .panel-quick-actions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .panel-quick-actions .panel-link-btn {
    height: 74px;
    min-height: 74px;
    border-radius: 16px;
    font-size: 0.8rem;
    padding: 6px 6px;
  }

  .panel-link-icon {
    font-size: 1.02rem;
  }

  .panel-link-text {
    font-size: 0.74rem;
  }

  .property-panel label {
    font-size: 0.9rem;
    padding: 5px 6px;
  }

  .text-tune-panel,
  .font-inspector-panel {
    padding: 8px;
    gap: 6px;
  }

  .text-tune-panel h3,
  .font-inspector-panel h3 {
    font-size: 1.2rem;
  }

  .text-tune-actions {
    grid-template-columns: 1fr;
  }

  .property-panel input[type="number"] {
    padding: 6px;
    font-size: 1.05rem;
  }

  .split-panel {
    margin-top: 2px;
    padding: 8px;
    gap: 6px;
  }

  .split-panel h3 {
    font-size: 1.2rem;
  }

  .split-note {
    font-size: 0.84rem;
  }

  .split-range-list {
    max-height: 96px;
  }

  #splitPdfBtn {
    min-height: 42px;
  }
}

@media (max-width: 480px) {
  .app-shell {
    gap: 6px;
    padding: 6px;
    padding-bottom: calc(6px + env(safe-area-inset-bottom));
  }

  .topbar {
    padding: 6px 8px;
  }

  .lang-toggle-btn {
    min-width: 114px;
    gap: 5px;
    padding: 4px 6px;
  }

  .lang-toggle-btn .flag-chip {
    width: 34px;
    height: 24px;
    border-radius: 8px;
  }

  .lang-toggle-btn .flag-icon {
    font-size: 1rem;
  }

  .lang-toggle-btn .flag-swap {
    font-size: 1rem;
  }

  .brand h1 {
    font-size: 1.36rem;
  }

  .brand p {
    display: none;
  }

  .thumbnail-panel {
    max-height: 158px;
  }

  .thumbnail-item {
    min-width: 96px;
    width: 96px;
  }

  .tool-rail .tool-btn {
    min-width: 92px;
    font-size: 0.92rem;
    padding: 7px 8px;
  }

  .stage-toolbar .ghost-btn {
    font-size: 0.92rem;
    padding: 5px 7px;
  }

  .zoom-slider {
    width: 72px;
  }

  .property-panel {
    grid-template-columns: 1fr;
  }

  .property-panel h2 {
    font-size: 1.18rem;
  }

  .panel-link-btn {
    min-width: 68px;
    padding: 4px 6px;
  }

  .panel-quick-actions .panel-link-btn {
    height: 68px;
    min-height: 68px;
    border-radius: 15px;
    font-size: 0.74rem;
  }

  .panel-link-icon {
    font-size: 0.94rem;
  }

  .panel-link-text {
    font-size: 0.68rem;
  }
}

.svg-page .app-shell {
  overflow: auto;
}

.raster-page .app-shell {
  overflow: auto;
}

.svg-workspace {
  flex: 1;
  min-height: 0;
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(280px, 32vw, 420px);
  gap: 10px;
}

.svg-panel {
  border: 3px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  background: #fdfdff;
  min-width: 0;
}

.svg-convert-panel {
  padding: 14px;
  display: grid;
  gap: 10px;
  background: linear-gradient(180deg, #f0f6ff 0%, #e6efff 100%);
}

.svg-convert-panel h2,
.svg-preview-panel h2 {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 1.6rem;
}

.svg-note {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
}

.svg-dropzone {
  border: 3px dashed #4178dd;
  border-radius: 12px;
  background: #eff6ff;
  padding: 18px 14px;
  text-align: center;
  color: #2d5fc1;
  font-family: var(--font-ui);
  font-size: 1.35rem;
  line-height: 1.1;
  cursor: pointer;
  transition: transform 0.12s ease, background-color 0.15s ease;
}

.svg-dropzone:hover {
  transform: translate(-1px, -1px);
  background: #e4f0ff;
}

.svg-dropzone.active {
  background: #d7e9ff;
}

.svg-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.svg-controls {
  display: grid;
  gap: 8px;
  border: 2px solid #2f5fc7;
  border-radius: 10px;
  background: #ffffff;
  padding: 10px;
}

.svg-control-mode,
.svg-control-detail {
  display: grid;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
}

.svg-control-mode {
  grid-template-columns: 78px minmax(0, 1fr);
}

.svg-control-detail {
  grid-template-columns: 78px minmax(0, 1fr) 44px;
}

.svg-control-mode select,
.svg-control-detail input[type="range"] {
  width: 100%;
}

.svg-control-mode select {
  border: 2px solid var(--line);
  border-radius: 10px;
  box-shadow: 2px 2px 0 var(--line);
  background: #fff;
  color: var(--ink);
  padding: 6px 8px;
  font-family: var(--font-ui);
  font-size: 1.07rem;
}

.svg-detail-value {
  display: inline-flex;
  justify-content: flex-end;
  min-width: 42px;
  font-family: var(--font-ui);
  font-size: 1.15rem;
  color: #2d436e;
}

.svg-meta {
  display: grid;
  gap: 6px;
  border: 2px solid #2f5fc7;
  border-radius: 10px;
  background: #ffffff;
  padding: 10px;
  color: #2d436e;
  font-size: 0.97rem;
}

.svg-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.svg-status {
  border-top: 3px solid var(--line);
  padding-top: 8px;
  font-family: var(--font-ui);
  font-size: 1.22rem;
  color: var(--ink-soft);
}

.svg-preview-panel {
  padding: 12px;
  display: grid;
  gap: 10px;
  background: #fff9dc;
  overflow: auto;
}

.svg-preview-card {
  border: 3px solid var(--line);
  border-radius: 12px;
  background: #ffffff;
  padding: 8px;
  display: grid;
  gap: 8px;
}

.svg-preview-card h3 {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 1.25rem;
}

.svg-preview-frame {
  border: 2px solid #c6d5fb;
  border-radius: 8px;
  background: #f8fbff;
  min-height: 220px;
  width: 100%;
  display: block;
}

.svg-preview-image {
  width: 100%;
  height: auto;
  display: block;
}

.svg-preview-object {
  width: 100%;
  height: 320px;
  display: block;
}

.raster-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
  max-height: 340px;
  overflow: auto;
}

.raster-preview-item {
  border: 2px solid #c6d5fb;
  border-radius: 8px;
  background: #f8fbff;
  padding: 6px;
  display: grid;
  gap: 4px;
}

.raster-preview-item img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
}

.raster-preview-item span {
  font-family: var(--font-ui);
  font-size: 1rem;
  color: var(--ink-soft);
}

.svg-hidden-input {
  display: none;
}

@media (max-width: 980px) {
  .svg-workspace {
    grid-template-columns: 1fr;
  }

  .svg-preview-object {
    height: 260px;
  }
}

@media (max-width: 768px) {
  .svg-convert-panel h2,
  .svg-preview-panel h2 {
    font-size: 1.35rem;
  }

  .svg-dropzone {
    font-size: 1.06rem;
    padding: 12px 10px;
  }

  .svg-actions {
    grid-template-columns: 1fr;
  }

  .svg-control-mode,
  .svg-control-detail {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .svg-detail-value {
    justify-content: flex-start;
  }

  .svg-preview-object {
    height: 220px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .logo-track,
  .star-spinner {
    animation: none !important;
  }
}