:root {
  color-scheme: dark;
  --font-sans: "Work Sans", "Inter", system-ui, -apple-system, sans-serif;
  --accent: #aeb3c1;
  --accent-strong: #c7cbd6;
  --accent-soft: rgba(174, 179, 193, 0.16);
  --accent-soft-strong: rgba(174, 179, 193, 0.26);
  --accent-glow: 0 0 0 rgba(0, 0, 0, 0);
  --action-bg: linear-gradient(135deg, #d1d5df, #b8becd);
  --action-bg-hover: linear-gradient(135deg, #dce0ea, #c6ccda);
  --action-text: #0f1322;
  --text-primary: #eef1f7;
  --text-secondary: #b9c0cd;
  --surface-base: #1a1b1e;
  --surface-panel: #212226;
  --surface-contrast: #282a2f;
  --border-soft: #343740;
  --divider-strong: rgba(255, 255, 255, 0.12);
  --divider-soft: rgba(255, 255, 255, 0.08);
  --control-surface: rgba(18, 19, 22, 0.9);
  --control-contrast: rgba(20, 21, 25, 0.95);
  --pill-surface: rgba(255, 255, 255, 0.05);
  --error: #f87171;
  --success: #4ade80;
  --shadow: 0 14px 30px rgba(0, 0, 0, 0.15);
  --radius: 16px;
  --bg: var(--surface-base);
  --bg-alt: var(--surface-base);
  --card-bg: var(--surface-panel);
  --border: var(--border-soft);
}

:root[data-theme="light"] {
  color-scheme: light;
  --accent: #3e4f79;
  --accent-strong: #27355c;
  --accent-soft: rgba(39, 53, 92, 0.14);
  --accent-soft-strong: rgba(62, 79, 121, 0.22);
  --accent-glow: 0 16px 35px rgba(39, 53, 92, 0.18);
  --action-bg: linear-gradient(135deg, #dfe6f5, #cfd8ec);
  --action-bg-hover: linear-gradient(135deg, #e8eef9, #d8e1f2);
  --action-text: #0d1427;
  --text-primary: #0f1729;
  --text-secondary: #606b85;
  --surface-base: #f5f7fb;
  --surface-panel: #ffffff;
  --surface-contrast: #eef1f7;
  --border-soft: #d8deea;
  --divider-strong: rgba(17, 24, 39, 0.12);
  --divider-soft: rgba(17, 24, 39, 0.08);
  --control-surface: rgba(255, 255, 255, 0.98);
  --control-contrast: rgba(238, 243, 252, 0.98);
  --pill-surface: rgba(39, 53, 92, 0.06);
  --shadow: 0 16px 30px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
}

body {
  min-height: 100vh;
  background: var(--surface-base);
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.55;
  letter-spacing: -0.01em;
  padding-top: 48px;
  padding-left: 72px;
}

.page-background {
  display: none;
}

.page {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
}

.title-block {
  max-width: 560px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.7rem;
  color: var(--text-secondary);
  font-weight: 600;
}

h1 {
  font-size: 1.45rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-top: 0.35rem;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

button,
input,
select {
  font-family: var(--font-sans);
}

.title-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.summary-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  min-width: 220px;
  display: grid;
  gap: 0.5rem;
  box-shadow: var(--shadow);
}

.summary-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.summary-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  font-weight: 600;
}

.summary-value {
  font-weight: 600;
  font-size: 0.85rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.6rem;
}

.card-header h2 {
  font-size: 1rem;
  font-weight: 600;
}

.card-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.info-tip {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.info-icon {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: default;
  background: var(--pill-surface);
}

.info-bubble {
  position: absolute;
  right: 0;
  top: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
  font-size: 0.78rem;
  color: var(--text-secondary);
  width: 260px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 10;
}

.info-tip:hover .info-bubble,
.info-tip:focus-within .info-bubble {
  opacity: 1;
  transform: translateY(0);
}

.card-header p {
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.file-input {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  padding: 0.6rem 0.9rem;
  border-radius: 12px;
  border: 1px dashed var(--border);
  background: var(--control-surface);
  cursor: pointer;
  font-weight: 500;
  color: var(--text-primary);
  transition: border-color 0.2s ease, background 0.2s ease;
  width: 100%;
}

.file-input input {
  display: none;
}

.file-input:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.file-input.drag-over {
  border-color: var(--accent-strong);
  background: var(--accent-soft-strong);
  box-shadow: var(--accent-glow);
}

.file-input .drop-hint {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.helper {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.import-status.is-error {
  color: var(--error);
  font-weight: 600;
}

.progress {
  width: 100%;
  height: 12px;
  background: var(--control-contrast);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  color: #fff;
  font-size: 0.65rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: width 0.2s ease;
}

.range-list {
  display: grid;
  gap: 0.75rem;
}

.range-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr)) 160px;
  gap: 0.75rem;
  align-items: end;
}

.range-row label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.range-row input,
.range-row select {
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--control-surface);
  color: var(--text-primary);
  font-size: 0.9rem;
}

.range-row input:focus,
.range-row select:focus {
  outline: 2px solid rgba(37, 99, 235, 0.2);
  border-color: var(--accent);
}

.range-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
  flex-wrap: wrap;
}

.range-row-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.preview-inline {
  display: grid;
  gap: 0.75rem;
}

.preview-inline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.preview-tools {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.preview-zoom {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.zoom-level {
  font-size: 0.75rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: var(--pill-surface);
  min-width: 60px;
  text-align: center;
}

.preview-controls {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 0.9fr);
  align-items: end;
}

.preview-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.preview-bulto {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 0.75rem;
}

.preview-bulto label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  min-width: 160px;
}

.preview-bulto input {
  padding: 0.5rem 0.65rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--control-surface);
  color: var(--text-primary);
  font-size: 0.9rem;
}

.preview-meta {
  display: grid;
  gap: 0.4rem;
  justify-items: end;
}

.preview-meta-item {
  font-size: 0.78rem;
  color: var(--text-secondary);
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--pill-surface);
  width: fit-content;
}

.preview-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.preview-frame {
  position: relative;
  min-height: 280px;
  height: clamp(280px, 50vh, 640px);
  border-radius: 12px;
  border: 1px dashed var(--border);
  overflow: hidden;
  background: var(--surface-contrast);
}

.preview-canvas {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  cursor: grab;
  user-select: none;
  touch-action: none;
}

.preview-canvas.is-panning {
  cursor: grabbing;
}

.preview-frame img {
  max-width: none;
  max-height: none;
  width: auto;
  height: auto;
  display: block;
  background: white;
  opacity: 0;
  transform-origin: center center;
  will-change: transform;
  transition: opacity 0.15s ease;
}

.preview-frame.has-image img {
  opacity: 1;
}

.preview-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.preview-frame.has-image .preview-empty {
  display: none;
}

.preview-note {
  margin-top: 0.25rem;
}

.btn {
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0.65rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  box-shadow: none;
  transform: none;
}

.btn.primary {
  background: var(--action-bg);
  color: var(--action-text);
  box-shadow: var(--accent-glow);
}

.btn.primary:hover {
  background: var(--action-bg-hover);
}

.btn.ghost {
  background: var(--pill-surface);
  color: var(--text-primary);
  border-color: var(--border);
}

.btn.ghost:hover {
  border-color: var(--accent-strong);
  background: var(--accent-soft);
}

.btn.tiny {
  padding: 0.45rem 0.9rem;
  font-size: 0.75rem;
}
.btn.danger {
  background: rgba(220, 38, 38, 0.2);
  color: var(--error);
  border-color: rgba(220, 38, 38, 0.35);
}

.error {
  color: var(--error);
  font-weight: 600;
  min-height: 1.2rem;
}

.info-list {
  display: grid;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.82rem;
  margin-left: 1.2rem;
}

.info-list li {
  line-height: 1.5;
}

@media (max-width: 768px) {
  .page {
    padding: 1rem 0.9rem 2.5rem;
  }

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

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

  body {
    padding-left: 0;
  }

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

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

  .preview-controls {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .preview-tools {
    width: 100%;
    justify-content: flex-start;
  }

  .preview-meta {
    justify-items: start;
  }

  .preview-controls .btn {
    width: auto;
  }

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