:root {
  color-scheme: light;
  --ink: #263238;
  --muted: #71818a;
  --line: #dfe8e7;
  --panel: rgba(255, 255, 255, 0.8);
  --mint: #bdeee2;
  --mint-deep: #37a891;
  --rose: #ffd3dc;
  --apricot: #ffe2b8;
  --sky: #cce8ff;
  --shadow: 0 24px 70px rgba(80, 113, 128, 0.18);
  --radius: 8px;
  --font: "Inter", "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background:
    linear-gradient(135deg, rgba(189, 238, 226, 0.72), rgba(204, 232, 255, 0.52) 38%, rgba(255, 211, 220, 0.6)),
    #fbfdfc;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: var(--font);
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

svg {
  display: block;
}

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

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 44px 0 36px;
}

.hero-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 390px);
  gap: 24px;
  align-items: stretch;
  margin-bottom: 22px;
}

.hero-copy,
.upload-panel,
.control-panel,
.panel,
.tool-bar {
  border: 1px solid rgba(255, 255, 255, 0.78);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-copy {
  min-height: 260px;
  padding: 40px;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.eyebrow {
  width: fit-content;
  margin: 0 0 14px;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(55, 168, 145, 0.14);
  color: #238d78;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 14px;
  font-size: clamp(2.45rem, 6.4vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.intro {
  max-width: 560px;
  margin-bottom: 0;
  color: #5d6c73;
  font-size: 1.08rem;
  line-height: 1.72;
  word-break: keep-all;
}

.upload-panel {
  min-height: 260px;
  padding: 22px;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  border-style: dashed;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.upload-panel.is-dragging {
  transform: translateY(-2px);
  border-color: var(--mint-deep);
  background: rgba(255, 255, 255, 0.92);
}

.upload-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 20px;
  border-radius: var(--radius);
  background: #263238;
  color: #fff;
  font-weight: 800;
  box-shadow: 0 12px 26px rgba(38, 50, 56, 0.18);
  cursor: pointer;
}

.upload-icon,
.primary-button svg,
.secondary-button svg {
  width: 22px;
  height: 22px;
}

.upload-icon svg,
.primary-button svg,
.secondary-button svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.upload-caption {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
}

.workspace {
  display: grid;
  gap: 18px;
}

.control-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
  gap: 18px;
  align-items: center;
  padding: 18px;
  border-radius: var(--radius);
}

.mode-group {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.mode-button {
  min-height: 46px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.7);
  color: var(--muted);
  font-weight: 800;
}

.mode-button.is-active {
  border-color: rgba(55, 168, 145, 0.45);
  background: rgba(189, 238, 226, 0.72);
  color: #247f6e;
}

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

.option-field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.option-field[hidden] {
  display: none;
}

.option-field span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

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

.option-field select {
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  padding: 0 12px;
  outline: none;
}

.option-field select:focus {
  border-color: var(--mint-deep);
  box-shadow: 0 0 0 4px rgba(55, 168, 145, 0.14);
}

.option-field input[type="range"] {
  accent-color: var(--mint-deep);
  min-height: 46px;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.panel {
  min-width: 0;
  padding: 18px;
  border-radius: var(--radius);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 34px;
  margin-bottom: 14px;
}

.panel-header h2 {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.2;
}

.status-pill {
  max-width: 52%;
  overflow: hidden;
  padding: 6px 9px;
  border-radius: 999px;
  background: rgba(189, 238, 226, 0.62);
  color: #247f6e;
  font-size: 0.82rem;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-list,
.result-list {
  position: relative;
  min-height: 430px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.35)),
    rgba(255, 255, 255, 0.48);
}

.file-list:not(.is-empty),
.result-list:not(.is-empty) {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 12px;
  overflow: auto;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 14px;
  padding: 22px;
  color: var(--muted);
  text-align: center;
  font-weight: 700;
}

.file-list:not(.is-empty) .empty-state,
.result-list:not(.is-empty) .empty-state {
  display: none;
}

.empty-mark {
  width: 64px;
  height: 64px;
  border-radius: 24px;
  background:
    linear-gradient(135deg, var(--sky), var(--mint)),
    #eef8f6;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.7);
}

.result-mark {
  background: linear-gradient(135deg, var(--rose), var(--apricot));
}

.file-item,
.result-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  min-height: 68px;
  padding: 10px;
  border: 1px solid rgba(223, 232, 231, 0.9);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.74);
}

.file-thumb,
.result-thumb {
  width: 46px;
  height: 46px;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  overflow: hidden;
  background: rgba(204, 232, 255, 0.6);
  color: #2f667a;
  font-size: 0.72rem;
  font-weight: 900;
  text-transform: uppercase;
}

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

.file-name,
.result-name {
  margin: 0 0 4px;
  overflow: hidden;
  font-size: 0.94rem;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-meta,
.result-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.download-link {
  min-height: 38px;
  padding: 0 12px;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #263238;
  color: #fff;
  font-size: 0.82rem;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.processing-layer {
  position: absolute;
  inset: 0;
  display: none;
  pointer-events: none;
  background: rgba(255, 255, 255, 0.34);
}

.result-list.is-processing .processing-layer {
  display: block;
}

.scan-line {
  position: absolute;
  top: -18%;
  left: 0;
  width: 100%;
  height: 22%;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(189, 238, 226, 0.05),
    rgba(55, 168, 145, 0.55),
    rgba(255, 255, 255, 0.72),
    transparent
  );
  animation: scan 1800ms ease-in-out infinite;
}

.sparkles span {
  position: absolute;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 24px rgba(55, 168, 145, 0.76);
  animation: sparkle 1200ms ease-in-out infinite;
}

.sparkles span:nth-child(1) {
  top: 24%;
  left: 24%;
}

.sparkles span:nth-child(2) {
  top: 48%;
  right: 20%;
  animation-delay: 180ms;
}

.sparkles span:nth-child(3) {
  bottom: 22%;
  left: 52%;
  animation-delay: 340ms;
}

.tool-bar {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 14px;
  border-radius: var(--radius);
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 16px;
  border-radius: var(--radius);
  font-weight: 800;
  white-space: nowrap;
}

.primary-button {
  background: #2f8f7d;
  color: #fff;
}

.secondary-button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
}

.error-message {
  margin: -6px 4px 0;
  color: #b14b5f;
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.5;
}

.error-message[hidden] {
  display: none;
}

@keyframes scan {
  0% {
    transform: translateY(0);
    opacity: 0;
  }
  18%,
  82% {
    opacity: 1;
  }
  100% {
    transform: translateY(560%);
    opacity: 0;
  }
}

@keyframes sparkle {
  0%,
  100% {
    transform: scale(0.55);
    opacity: 0.2;
  }
  50% {
    transform: scale(1);
    opacity: 1;
  }
}

@media (max-width: 900px) {
  .app-shell {
    width: min(100% - 24px, 680px);
    padding-top: 20px;
  }

  .hero-panel,
  .control-panel,
  .work-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .upload-panel,
  .control-panel,
  .panel {
    padding: 18px;
  }

  .hero-copy {
    min-height: 230px;
  }

  h1 {
    font-size: clamp(2.12rem, 12vw, 3.6rem);
  }

  .mode-group,
  .option-grid {
    grid-template-columns: 1fr;
  }

  .file-list,
  .result-list {
    min-height: 300px;
  }

  .tool-bar {
    display: grid;
    grid-template-columns: 1fr;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }
}