.signature-app {
  --signature-surface: #ffffff;
  --signature-muted-surface: #f6f8fb;
  --signature-border: rgba(8, 10, 16, 0.14);
  --signature-soft-border: rgba(8, 10, 16, 0.09);
  --signature-muted: #5f6978;
  --signature-success: #1f7a3b;
  --signature-success-bg: #edf8f0;
  --signature-shadow: 0 8px 22px rgba(8, 10, 16, 0.055);
  color: var(--xonto-text);
}

.xonto-header-privacy {
  flex: 0 1 auto;
  min-width: 0;
  max-width: 430px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  color: #1f7a3b;
  background: #edf8f0;
  border: 1px solid rgba(31, 122, 59, 0.22);
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 750;
  line-height: 1.25;
}

.xonto-header-privacy__icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.xonto-header-privacy span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.signature-app__intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
  margin-bottom: 20px;
}

.signature-app h1 {
  max-width: 880px;
  margin: 0 0 12px;
  color: var(--xonto-black);
  font-family: var(--xonto-font-headline);
  font-size: clamp(1.78rem, 3vw, 2.38rem);
  line-height: 1.06;
}

.signature-app__lead {
  max-width: 700px;
  margin: 0;
  color: var(--signature-muted);
  font-size: 1rem;
  line-height: 1.6;
}

.signature-app__workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.78fr);
  gap: 16px;
  align-items: start;
}

.signature-app__left,
.signature-app__right {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.signature-card {
  background: var(--signature-surface);
  border: 1px solid var(--signature-border);
  border-radius: 8px;
  box-shadow: var(--signature-shadow);
  padding: 16px;
}

.dropzone {
  min-height: 142px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 18px;
  text-align: center;
  cursor: pointer;
  background: #ffffff;
  border: 2px dashed rgba(8, 10, 16, 0.22);
  border-radius: 8px;
  transition: border-color 160ms ease, background 160ms ease;
}

.dropzone:hover,
.dropzone.dragover {
  background: var(--signature-muted-surface);
  border-color: var(--xonto-blue);
}

.upload-icon {
  display: inline-grid;
  min-width: 62px;
  min-height: 30px;
  place-items: center;
  padding-inline: 11px;
  color: var(--xonto-white);
  background: var(--xonto-black);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 750;
}

.dropzone__title,
.panel-title,
.preview-title {
  margin: 0;
  color: var(--xonto-black);
  font-family: var(--xonto-font-headline);
  font-size: 1.16rem;
  line-height: 1.2;
}

.dropzone__text {
  max-width: 500px;
  color: var(--signature-muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.file-name {
  display: none;
  max-width: 100%;
  overflow: hidden;
  padding: 7px 11px;
  color: var(--signature-success);
  background: var(--signature-success-bg);
  border: 1px solid rgba(31, 122, 59, 0.22);
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.panel-head,
.preview-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(130px, 1fr));
  gap: 10px;
  margin-bottom: 10px;
}

.two-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 10px;
}

.control-box {
  min-width: 0;
  padding: 12px;
  background: #ffffff;
  border: 1px solid var(--signature-soft-border);
  border-radius: 8px;
}

.control-box label,
.control-label {
  display: block;
  margin-bottom: 9px;
  color: var(--xonto-black);
  font-size: 0.86rem;
  font-weight: 700;
}

.signature-app input[type="range"] {
  width: 100%;
  accent-color: var(--xonto-blue);
}

.signature-app input[type="color"] {
  width: 100%;
  height: 38px;
  padding: 4px;
  background: #ffffff;
  border: 1px solid var(--signature-border);
  border-radius: 8px;
  cursor: pointer;
}

.value {
  margin-top: 6px;
  color: var(--signature-muted);
  font-size: 0.78rem;
}

.button-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px;
}

.button-row input[type="color"] {
  grid-column: 1 / -1;
}

.signature-app button {
  min-height: 38px;
  padding: 8px 12px;
  color: var(--xonto-white);
  background: var(--xonto-blue);
  border: 1px solid var(--xonto-blue);
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.signature-app button.secondary {
  color: var(--xonto-black);
  background: #ffffff;
  border-color: var(--signature-border);
}

.signature-app button:hover:not(:disabled) {
  border-color: var(--xonto-blue);
}

.signature-app button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.small-note {
  margin: 10px 0 0;
  color: var(--signature-muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.preview-card {
  position: sticky;
  top: calc(var(--xonto-header-height) + 14px);
}

.preview-subtitle {
  margin: 4px 0 0;
  color: var(--signature-muted);
  font-size: 0.9rem;
}

.icon-button {
  flex: 0 0 auto;
}

#resetBtn {
  min-height: 34px;
  padding: 7px 10px;
  color: #5f6978;
  background: #f2f4f7;
  border-color: rgba(8, 10, 16, 0.1);
  font-weight: 500;
}

#resetBtn:hover:not(:disabled) {
  color: #303744;
  background: #e9edf3;
  border-color: rgba(8, 10, 16, 0.14);
}

.preview-area {
  min-height: 292px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid var(--signature-border);
  border-radius: 8px;
}

.preview-stage {
  max-width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: transparent;
  background-image: linear-gradient(45deg, #e5e5e5 25%, transparent 25%), linear-gradient(-45deg, #e5e5e5 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #e5e5e5 75%), linear-gradient(-45deg, transparent 75%, #e5e5e5 75%);
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
  background-size: 24px 24px;
  border-radius: 8px;
}

.preview-stage-empty {
  min-width: 180px;
  min-height: 120px;
  padding: 18px;
}

.empty-preview {
  max-width: 310px;
  color: var(--signature-muted);
  font-size: 0.92rem;
  line-height: 1.55;
  text-align: center;
}

#resultCanvas {
  max-width: 100%;
  max-height: 252px;
  display: none;
}

#sourceCanvas {
  display: none;
}

.status {
  margin-top: 12px;
  padding: 11px 12px;
  color: var(--signature-muted);
  background: var(--signature-muted-surface);
  border-radius: 8px;
  font-size: 0.9rem;
  line-height: 1.55;
}

.status strong {
  color: var(--xonto-black);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.signature-features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.feature h3 {
  margin: 0 0 8px;
  color: var(--xonto-black);
  font-size: 0.95rem;
}

.feature p {
  margin: 0;
  color: var(--signature-muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

.feature__icon {
  width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  margin-bottom: 12px;
  color: var(--xonto-blue);
  background: rgba(47, 128, 255, 0.09);
  border: 1px solid rgba(47, 128, 255, 0.18);
  border-radius: 8px;
}

.feature__icon svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (max-width: 980px) {
  .signature-app__workspace,
  .signature-features {
    grid-template-columns: 1fr;
  }

  .preview-card {
    position: static;
  }

  .preview-area {
    min-height: 260px;
  }

  #resultCanvas {
    max-height: 230px;
  }

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

@media (max-width: 760px) {
  .xonto-header-privacy {
    max-width: min(360px, 58vw);
    padding: 7px 9px;
    font-size: 0.72rem;
  }

  .xonto-header-privacy__icon {
    width: 17px;
    height: 17px;
  }
}

@media (max-width: 560px) {
  .signature-app__intro {
    margin-bottom: 16px;
  }

  .xonto-header-privacy {
    max-width: 100%;
    gap: 7px;
    font-size: 0.66rem;
    line-height: 1.2;
  }

  .xonto-header-privacy span {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .signature-app__workspace {
    gap: 12px;
  }
}

@media (max-width: 560px) and (orientation: portrait) {
  .signature-app--has-image {
    padding-bottom: 224px;
  }

  .signature-app--has-image .signature-app__right {
    position: fixed;
    right: var(--xonto-page-gutter);
    bottom: 0;
    left: var(--xonto-page-gutter);
    z-index: 980;
  }

  .signature-app--has-image .preview-card {
    position: static;
    padding: 9px;
    border-color: rgba(8, 10, 16, 0.16);
    border-radius: 8px 8px 0 0;
    box-shadow: 0 -10px 28px rgba(8, 10, 16, 0.14);
  }

  .signature-app--has-image .preview-head {
    align-items: center;
    flex-direction: row;
    gap: 8px;
    margin-bottom: 8px;
  }

  .signature-app--has-image .preview-title {
    font-size: 0.98rem;
  }

  .signature-app--has-image .preview-subtitle {
    display: none;
  }

  .signature-app--has-image #resetBtn {
    min-height: 30px;
    padding: 5px 8px;
    font-size: 0.78rem;
  }

  .signature-app--has-image .preview-area {
    min-height: 112px;
    max-height: 112px;
    padding: 7px;
  }

  .signature-app--has-image .preview-stage-empty {
    min-height: 86px;
    padding: 10px;
  }

  .signature-app--has-image .empty-preview {
    font-size: 0.78rem;
    line-height: 1.35;
  }

  .signature-app--has-image #resultCanvas {
    max-height: 96px;
  }

  .signature-app--has-image .status {
    display: none;
  }

  .signature-app--has-image .download-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
    margin-top: 8px;
  }

  .signature-app--has-image .download-grid button {
    min-height: 32px;
    padding: 6px 4px;
    font-size: 0.78rem;
  }

  .signature-app--has-image .controls-grid,
  .signature-app--has-image .two-grid {
    gap: 8px;
  }

  .signature-app--has-image .control-box {
    padding: 9px;
  }

  .signature-app--has-image .control-box label,
  .signature-app--has-image .control-label {
    margin-bottom: 6px;
    font-size: 0.8rem;
  }

  .signature-app--has-image .value {
    margin-top: 4px;
    font-size: 0.72rem;
  }

  .signature-app--has-image .signature-app input[type="color"],
  .signature-app--has-image input[type="color"] {
    height: 32px;
  }
}

@media (max-width: 720px) {
  .signature-app__lead {
    font-size: 0.96rem;
  }

  .controls-grid,
  .two-grid {
    grid-template-columns: 1fr;
  }

  .panel-head,
  .preview-head {
    align-items: stretch;
    flex-direction: column;
  }

  .signature-features {
    gap: 10px;
  }
}

@media (max-width: 420px) {
  .signature-app h1 {
    margin-bottom: 10px;
  }

  .signature-app__lead {
    font-size: 0.93rem;
    line-height: 1.55;
  }

  .signature-card {
    padding: 12px;
  }

  .signature-app__left,
  .signature-app__right {
    gap: 12px;
  }

  .dropzone {
    min-height: 132px;
    padding: 14px;
  }

  .download-grid,
  .button-row {
    grid-template-columns: 1fr;
  }

  .signature-app--has-image .download-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .preview-area {
    min-height: 220px;
    padding: 10px;
  }

  .preview-stage-empty {
    min-width: 0;
    width: 100%;
    min-height: 108px;
    padding: 14px;
  }

  .empty-preview {
    font-size: 0.86rem;
  }

  #resultCanvas {
    max-height: 200px;
  }

  .status {
    font-size: 0.84rem;
  }
}

@media (max-width: 360px) {
  .xonto-header-privacy {
    max-width: 190px;
    padding: 6px 7px;
    gap: 5px;
    font-size: 0.62rem;
  }

  .xonto-header-privacy__icon {
    width: 15px;
    height: 15px;
  }

  .signature-app h1 {
    font-size: 1.62rem;
  }

  .dropzone__title,
  .panel-title,
  .preview-title {
    font-size: 1.05rem;
  }

  .control-box {
    padding: 10px;
  }

  .signature-app button {
    min-height: 36px;
    padding-inline: 10px;
    font-size: 0.88rem;
  }
}