:root {
  --ink: var(--tools-text);
  --muted: var(--tools-muted);
  --paper: var(--tools-bg);
  --surface: var(--tools-surface);
  --surface-soft: var(--tools-surface-soft);
  --line: var(--tools-line);
  --green: var(--tools-green);
  --green-dark: var(--tools-green-strong);
  --green-soft: var(--tools-green-soft);
  --red: var(--tools-red);
  --shadow: var(--tools-shadow);
  color: var(--ink);
  background: var(--paper);
  font-family: var(--tools-sans);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 12% 15%, color-mix(in srgb, var(--green) 8%, transparent), transparent 25rem),
    var(--paper);
}
button, input, select, textarea { font: inherit; }
button, select { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .55; }
a { color: inherit; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-size: .95rem;
  font-weight: 750;
  letter-spacing: -.02em;
  text-decoration: none;
}

.eyebrow,
.step-label {
  margin: 0 0 12px;
  color: var(--green-dark);
  font: 700 .72rem/1.3 var(--tools-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 17px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--ink);
  background: var(--surface);
  font-weight: 750;
  transition: transform .18s cubic-bezier(.23, 1, .32, 1), background .18s cubic-bezier(.23, 1, .32, 1), box-shadow .18s cubic-bezier(.23, 1, .32, 1);
}

.button-primary {
  min-height: 50px;
  padding-inline: 22px;
  color: var(--tools-on-action);
  background: var(--tools-action);
  box-shadow: 0 10px 25px color-mix(in srgb, var(--green) 24%, transparent);
}

.button-secondary {
  border-color: var(--line);
  color: var(--green-dark);
  background: var(--surface);
}

.button-icon,
.button-icon svg,
.button > span > svg,
.button > svg {
  display: block;
  width: 19px;
  height: 19px;
}

.message {
  display: flex;
  align-items: flex-start;
  gap: .65rem;
  padding: .85rem 1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.message > svg {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
}

.message > span {
  display: flex;
  flex-direction: column;
  gap: .15rem;
}

.message small {
  color: var(--muted);
  line-height: 1.45;
}

.message-error { border-color: color-mix(in srgb, var(--red) 38%, var(--line)); color: var(--red); }
.message-success { border-color: color-mix(in srgb, var(--green) 38%, var(--line)); color: var(--green-dark); }

main {
  width: min(1040px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  max-width: 850px;
  margin: 42px auto 54px;
  text-align: center;
}

.hero h1 {
  max-width: 900px;
  margin: 0 auto;
  font-family: var(--tools-serif);
  font-size: clamp(2.7rem, 6vw, 4.9rem);
  font-weight: 500;
  line-height: .98;
  letter-spacing: -.055em;
}

.hero-copy {
  max-width: 680px;
  margin: 28px auto 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.16rem);
  line-height: 1.75;
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 9px 20px;
  margin: 22px 0 0;
  padding: 0;
  color: var(--green-dark);
  font-size: .77rem;
  font-weight: 750;
  list-style: none;
}

.hero-proof li,
.privacy-note {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.hero-proof svg,
.privacy-note svg {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
}

.workspace {
  position: relative;
  min-height: 430px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--shadow);
  transition: border-color .2s, transform .2s;
}

.workspace.is-dragging {
  border-color: var(--green);
  transform: scale(1.005);
}

.empty-state {
  min-height: 430px;
  padding: 62px clamp(24px, 7vw, 78px);
  display: grid;
  grid-template-columns: 150px 1fr;
  align-items: center;
  gap: 24px 50px;
}

.empty-visual {
  width: 150px;
  height: auto;
  grid-row: span 6;
  object-fit: contain;
}

.empty-state h2,
.workspace-heading h2,
.package-guide h2 {
  margin: 0;
  font-family: var(--tools-serif);
  font-size: clamp(1.9rem, 5vw, 2.7rem);
  letter-spacing: -.035em;
  font-weight: 500;
}

.empty-state p:not(.step-label) {
  max-width: 650px;
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.file-action {
  min-height: 92px;
  padding: 18px;
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--tools-on-action);
  text-align: start;
  border: 1px solid var(--tools-action);
  border-radius: 14px;
  background: var(--tools-action);
  transition: transform .18s, background .18s, box-shadow .18s;
}

.file-action > span:last-child {
  display: grid;
  gap: 4px;
}

.file-action strong { font-size: .96rem; }
.file-action small { font-size: .74rem; opacity: .82; }

.action-icon {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 11px;
}

.action-icon svg { width: 23px; height: 23px; }

.privacy-note,
.drop-hint,
.empty-error { grid-column: 2; }

.privacy-note,
.drop-hint {
  margin: -4px 0 0 !important;
  font-size: .74rem;
}

.privacy-note {
  color: var(--green-dark) !important;
  font-weight: 700;
}

.drop-hint {
  margin-top: -13px !important;
  color: var(--muted) !important;
  text-align: center;
}

.icon-workspace {
  padding: clamp(1.25rem, 3.5vw, 3rem);
}

.workspace-heading,
.result-panel > header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.workspace-heading {
  margin-bottom: 1.5rem;
}

.workspace-heading h2 {
  max-width: 680px;
  margin-bottom: 0;
}

.editor-grid {
  display: grid;
  grid-template-columns: minmax(250px, .72fr) minmax(360px, 1.28fr);
  gap: 1rem;
}

.source-panel,
.settings-panel,
.preview-panel,
.result-panel {
  border: 1px solid var(--tools-line);
  border-radius: var(--tools-radius);
  background: var(--tools-surface-soft);
}

.source-panel,
.settings-panel {
  padding: clamp(1rem, 2.5vw, 1.5rem);
}

.source-panel h3,
.settings-panel > h3,
.preview-panel > h3,
.result-panel h3,
.file-inventory h4,
.snippet-panel h4 {
  margin: 0 0 .9rem;
  font-size: 1.05rem;
}

.source-preview {
  display: grid;
  place-items: center;
  overflow: hidden;
  aspect-ratio: 1;
  padding: 1rem;
  border: 1px solid var(--tools-line);
  border-radius: 14px;
  background-color: #f2efe7;
  background-image:
    linear-gradient(45deg, rgba(23, 36, 46, .06) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(23, 36, 46, .06) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(23, 36, 46, .06) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(23, 36, 46, .06) 75%);
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-size: 16px 16px;
}

.source-preview img {
  display: block;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.source-meta {
  display: flex;
  flex-direction: column;
  gap: .18rem;
  min-width: 0;
  margin: .8rem 0;
}

.source-meta strong {
  overflow-wrap: anywhere;
}

.source-meta span {
  color: var(--tools-muted);
  font-size: .86rem;
}

.resolution-warning {
  display: flex;
  align-items: flex-start;
  gap: .45rem;
  margin: .8rem 0;
  color: var(--tools-red);
  font-size: .86rem;
  line-height: 1.45;
}

.resolution-warning svg {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
}

.source-panel .button {
  width: 100%;
}

.fit-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .65rem;
  margin: 0;
  padding: 0;
  border: 0;
}

.fit-options legend {
  grid-column: 1 / -1;
  margin-bottom: .1rem;
  font-weight: 700;
}

.fit-options label,
.check-field {
  display: flex;
  align-items: flex-start;
  gap: .65rem;
  padding: .85rem;
  border: 1px solid var(--tools-line);
  border-radius: 12px;
  background: var(--tools-surface);
  cursor: pointer;
}

.fit-options label.selected {
  border-color: var(--tools-green);
  box-shadow: inset 0 0 0 1px var(--tools-green);
  background: var(--tools-green-soft);
}

.fit-options input,
.check-field input {
  flex: 0 0 auto;
  margin-top: .16rem;
  accent-color: var(--tools-action);
}

.fit-options span,
.check-field span {
  display: flex;
  flex-direction: column;
  gap: .2rem;
}

.fit-options small,
.check-field small,
.range-field small {
  color: var(--tools-muted);
  font-size: .81rem;
  font-weight: 400;
  line-height: 1.4;
}

.range-field,
.color-field {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  margin-top: 1rem;
}

.range-field input[type="range"] {
  width: 100%;
  accent-color: var(--tools-action);
}

.color-control {
  display: flex;
  align-items: center;
  gap: .7rem;
}

.color-control input[type="color"] {
  width: 52px;
  height: 44px;
  padding: 4px;
  border: 1px solid var(--tools-line);
  border-radius: 10px;
  background: var(--tools-surface);
}

.color-control output {
  font-family: var(--tools-mono);
  text-transform: uppercase;
}

.check-field {
  margin-top: 1rem;
}

.manifest-details {
  margin-top: 1rem;
  border-top: 1px solid var(--tools-line);
}

.manifest-details summary {
  min-height: 44px;
  padding-top: .85rem;
  font-weight: 700;
  cursor: pointer;
}

.manifest-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .85rem;
  padding-top: .5rem;
}

.manifest-fields > p {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--tools-muted);
  font-size: .86rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: .38rem;
}

.manifest-fields .manifest-color-field {
  margin-top: 0;
  gap: .38rem;
}

.manifest-color-field .color-control {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: .65rem;
}

.manifest-color-field .color-control input[type="text"] {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: .65rem .72rem;
  border: 1px solid var(--tools-line);
  border-radius: 10px;
  color: var(--tools-text);
  background: var(--tools-surface);
  font-family: var(--tools-mono);
  text-transform: uppercase;
}

.manifest-color-field .color-control input[aria-invalid="true"] {
  border-color: var(--tools-red);
}

.field-error {
  color: var(--tools-red);
  font-size: .78rem;
  line-height: 1.4;
}

.field > span,
.color-field > span:first-child {
  font-size: .88rem;
  font-weight: 700;
}

.field input,
.field select {
  width: 100%;
  min-height: 44px;
  padding: .65rem .72rem;
  border: 1px solid var(--tools-line);
  border-radius: 10px;
  color: var(--tools-text);
  background: var(--tools-surface);
  font: inherit;
}

.preview-panel {
  margin-top: 1rem;
  padding: clamp(1rem, 2.5vw, 1.5rem);
}

.preview-grid {
  display: grid;
  grid-template-columns: 1.25fr .75fr .9fr;
  gap: .75rem;
}

.preview-grid > article {
  min-width: 0;
  padding: .9rem;
  border: 1px solid var(--tools-line);
  border-radius: 14px;
  background: var(--tools-surface);
}

.preview-grid h4 {
  margin: 0 0 .75rem;
  color: var(--tools-muted);
  font-size: .84rem;
}

.browser-chrome {
  display: flex;
  align-items: center;
  gap: .28rem;
  min-height: 66px;
  padding: .55rem;
  border-radius: 10px;
  color: #263238;
  background: #e9ecef;
}

.browser-dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #a7adb2;
}

.browser-tab {
  display: flex;
  align-items: center;
  gap: .48rem;
  min-width: 0;
  margin-left: .35rem;
  padding: .5rem .65rem;
  border-radius: 8px 8px 4px 4px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .08);
}

.browser-tab img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.browser-tab span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: .78rem;
}

.phone-home {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  min-height: 150px;
  padding: .8rem;
  border-radius: 18px;
  color: #fff;
  background: linear-gradient(145deg, #667d8c, #263b4a);
}

.phone-home img {
  width: 78px;
  height: 78px;
  border-radius: 18px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, .25);
}

.phone-home span {
  max-width: 110px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: .72rem;
}

.maskable-preview {
  display: flex;
  flex-direction: column;
}

.mask-preview-shell {
  position: relative;
  align-self: center;
  overflow: hidden;
  width: 130px;
  aspect-ratio: 1;
  transition: border-radius 180ms ease;
}

.mask-preview-shell.mask-circle { border-radius: 50%; }
.mask-preview-shell.mask-rounded { border-radius: 28%; }
.mask-preview-shell.mask-square { border-radius: 0; }

.mask-preview-shell > img {
  display: block;
  width: 100%;
  height: 100%;
}

.safe-area-guide {
  position: absolute;
  inset: 10%;
  display: grid;
  place-items: center;
  border: 1px dashed rgba(255, 255, 255, .9);
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .25);
}

.safe-area-guide span {
  padding: .15rem .35rem;
  border-radius: 999px;
  color: #fff;
  background: rgba(0, 0, 0, .55);
  font-size: .62rem;
}

.shape-options {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .3rem;
  margin-top: .65rem;
}

.shape-options button {
  min-height: 36px;
  padding: .4rem .55rem;
  border: 1px solid var(--tools-line);
  border-radius: 8px;
  color: var(--tools-muted);
  background: var(--tools-surface);
  font: inherit;
  font-size: .72rem;
  cursor: pointer;
}

.shape-options button[aria-pressed="true"] {
  border-color: var(--tools-green);
  color: var(--tools-green-text);
  background: var(--tools-green-soft);
}

.workspace-message {
  margin-top: 1rem;
}

.package-actions {
  display: flex;
  justify-content: center;
  margin-top: 1rem;
}

.package-actions .button-primary {
  min-width: min(100%, 360px);
  min-height: 50px;
}

.result-panel {
  margin-top: 1rem;
  padding: clamp(1rem, 2.5vw, 1.5rem);
  background: var(--tools-green-soft);
}

.result-panel > header p {
  margin: .3rem 0 0;
  color: var(--tools-muted);
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
}

.file-inventory,
.snippet-panel {
  min-width: 0;
  padding: 1rem;
  border: 1px solid var(--tools-line);
  border-radius: 14px;
  background: var(--tools-surface);
}

.file-inventory ul {
  display: grid;
  gap: .35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.file-inventory li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .6rem;
  min-width: 0;
  padding: .48rem .55rem;
  border-radius: 9px;
  background: var(--tools-surface-soft);
}

.file-inventory li > span {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.file-inventory strong {
  overflow-wrap: anywhere;
  font-family: var(--tools-mono);
  font-size: .78rem;
}

.file-inventory small {
  color: var(--tools-muted);
  font-size: .72rem;
}

.file-inventory button {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--tools-line);
  border-radius: 9px;
  color: var(--tools-green-text);
  background: var(--tools-surface);
  cursor: pointer;
}

.file-inventory button svg {
  width: 18px;
  height: 18px;
}

.snippet-panel textarea {
  width: 100%;
  min-height: 190px;
  resize: vertical;
  padding: .8rem;
  border: 1px solid var(--tools-line);
  border-radius: 10px;
  color: var(--tools-text);
  background: var(--tools-surface-soft);
  font: .76rem/1.55 var(--tools-mono);
}

.snippet-panel .button {
  margin-top: .65rem;
}

.package-guide {
  margin: clamp(4rem, 8vw, 7rem) 0;
}

.guide-heading {
  max-width: 700px;
  margin-bottom: 1.5rem;
}

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

.guide-grid article {
  display: flex;
  gap: .85rem;
  padding: 1.15rem;
  border: 1px solid var(--tools-line);
  border-radius: 15px;
  background: var(--tools-surface);
}

.guide-grid h3 {
  margin: 0 0 .35rem;
  font-size: 1rem;
}

.guide-grid p {
  margin: 0;
  color: var(--tools-muted);
  font-size: .9rem;
  line-height: 1.55;
}

.trust-number {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: var(--tools-green-text);
  background: var(--tools-green-soft);
  font: 700 .72rem var(--tools-mono);
}

.drop-overlay {
  position: absolute;
  z-index: 5;
  inset: .75rem;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: .65rem;
  border: 2px dashed var(--tools-green);
  border-radius: 18px;
  color: var(--tools-green-text);
  background: color-mix(in srgb, var(--tools-green-soft) 94%, transparent);
  backdrop-filter: blur(4px);
}

.drop-overlay svg {
  width: 34px;
  height: 34px;
}

@media (max-width: 900px) {
  .editor-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .source-panel {
    display: grid;
    grid-template-columns: minmax(180px, .65fr) 1fr;
    align-items: start;
    gap: 0 1rem;
  }

  .source-panel h3 {
    grid-column: 1 / -1;
  }

  .source-preview {
    grid-row: span 4;
  }

  .preview-grid {
    grid-template-columns: 1fr 1fr;
  }

  .browser-preview {
    grid-column: 1 / -1;
  }

  .guide-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  main {
    width: min(100% - 28px, 1040px);
  }

  .hero {
    margin: 34px auto 42px;
  }

  .hero h1 {
    font-size: clamp(2.35rem, 13vw, 3.35rem);
  }

  .hero-proof {
    gap: 9px 16px;
  }

  .empty-state {
    min-height: 0;
    padding: 34px 20px;
    grid-template-columns: 1fr;
    text-align: center;
  }

  .empty-visual {
    width: min(178px, 62vw);
    grid-row: auto;
    margin: 0 auto;
  }

  .file-action { width: 100%; }

  .privacy-note,
  .drop-hint,
  .empty-error {
    grid-column: 1;
    justify-self: center;
  }

  .drop-hint { margin-top: -7px !important; }

  .icon-workspace { padding: 1rem; }

  .workspace-heading,
  .result-panel > header {
    align-items: stretch;
    flex-direction: column;
  }

  .source-panel {
    display: block;
  }

  .fit-options,
  .manifest-fields,
  .preview-grid {
    grid-template-columns: 1fr;
  }

  .browser-preview {
    grid-column: auto;
  }

  .package-actions .button-primary,
  .result-panel > header .button,
  .snippet-panel .button {
    width: 100%;
  }

  .browser-chrome {
    overflow: hidden;
  }

  .file-inventory,
  .snippet-panel,
  .result-panel,
  .preview-panel,
  .settings-panel,
  .source-panel {
    padding: .85rem;
  }
}

@media (prefers-color-scheme: dark) {
  .source-preview {
    background-color: #0d2025;
    background-image:
      linear-gradient(45deg, rgba(255, 255, 255, .05) 25%, transparent 25%),
      linear-gradient(-45deg, rgba(255, 255, 255, .05) 25%, transparent 25%),
      linear-gradient(45deg, transparent 75%, rgba(255, 255, 255, .05) 75%),
      linear-gradient(-45deg, transparent 75%, rgba(255, 255, 255, .05) 75%);
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button,
  .mask-preview-shell {
    transition: none;
  }
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .button:hover:not(:disabled),
  .file-action:hover:not(:disabled) { transform: translateY(-1px); }
  .button-primary:hover:not(:disabled),
  .file-action:hover:not(:disabled) { background: var(--tools-action-hover); }
}

.button:active:not(:disabled) { transform: scale(.97); }