.picbase64-tool .picbase64-layout {
  align-items: flex-start;
  row-gap: 16px;
}
.picbase64-input-panel,
.picbase64-result-panel {
  min-width: 0;
  height: 100%;
}
.picbase64-panel-header {
  gap: 12px;
}
.picbase64-panel-header > span:first-child {
  flex: 1;
  min-width: 0;
}
.picbase64-panel-header i {
  margin-right: 6px;
}
.picbase64-limit,
.picbase64-status {
  flex: 0 1 auto;
  min-width: 0;
  color: var(--text-3);
  font-size: 12.5px;
  font-weight: 500;
  text-align: right;
}
.picbase64-input-body,
.picbase64-result-body {
  gap: 14px;
}
.picbase64-dropzone {
  position: relative;
  display: flex;
  min-height: 230px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 24px;
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg-soft);
  color: var(--text-2);
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s, color .15s, box-shadow .15s;
}
.picbase64-dropzone:hover,
.picbase64-dropzone.is-dragging,
.picbase64-dropzone:focus-visible {
  border-color: var(--primary);
  background: var(--primary-soft);
  color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px var(--primary-ring);
}
.picbase64-dropzone input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.picbase64-dropzone i {
  color: var(--primary);
  font-size: 42px;
  line-height: 1;
}
.picbase64-dropzone strong {
  color: var(--text);
  font-size: 18px;
  line-height: 1.25;
}
.picbase64-dropzone span {
  max-width: 320px;
  color: var(--text-2);
  font-size: 13.5px;
  line-height: 1.45;
}
.picbase64-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.picbase64-action-row .btn {
  justify-content: center;
}
.picbase64-message,
.picbase64-url-error {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 13.5px;
  line-height: 1.45;
}
.picbase64-note {
  padding: 12px;
  border: 1px solid rgba(8, 145, 178, .26);
  border-radius: var(--radius);
  background: var(--info-soft);
  color: var(--text-2);
  font-size: 13.5px;
  line-height: 1.5;
}
.picbase64-empty {
  display: flex;
  min-height: 400px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 28px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg-soft);
  color: var(--text-3);
  text-align: center;
}
.picbase64-empty i {
  font-size: 34px;
  line-height: 1;
}
.picbase64-empty span {
  max-width: 360px;
  font-size: 14px;
  line-height: 1.5;
}
.picbase64-result {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 14px;
}
.picbase64-preview-grid {
  display: grid;
  grid-template-columns: minmax(160px, .9fr) minmax(0, 1.4fr);
  gap: 14px;
}
.picbase64-preview {
  display: flex;
  min-height: 210px;
  align-items: center;
  justify-content: center;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    linear-gradient(45deg, rgba(148, 163, 184, .16) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(148, 163, 184, .16) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(148, 163, 184, .16) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(148, 163, 184, .16) 75%);
  background-color: #fff;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-size: 16px 16px;
}
.picbase64-preview img {
  display: block;
  max-width: 100%;
  max-height: 230px;
  object-fit: contain;
}
.picbase64-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
}
.picbase64-meta div {
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-soft);
}
.picbase64-meta dt {
  margin: 0 0 3px;
  color: var(--text-3);
  font-size: 12.5px;
  line-height: 1.35;
}
.picbase64-meta dd {
  overflow: hidden;
  margin: 0;
  color: var(--text);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.picbase64-output-stack {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 12px;
}
.picbase64-output {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 7px;
  margin: 0;
}
.picbase64-output > span {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.picbase64-output strong {
  min-width: 0;
  color: var(--text-2);
  font-size: 13.5px;
  line-height: 1.35;
}
.picbase64-output textarea.form-control {
  min-height: 90px;
  max-height: 180px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.45;
  resize: vertical;
}
.picbase64-dialog {
  position: fixed;
  inset: 0;
  z-index: 260;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
}
.picbase64-dialog-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(17, 24, 39, .52);
}
.picbase64-dialog-panel {
  position: relative;
  display: flex;
  width: min(560px, 100%);
  flex-direction: column;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-lg);
}
.picbase64-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.picbase64-dialog-header h2 {
  margin: 0;
  color: var(--text);
  font-size: 18px;
  line-height: 1.3;
}
.picbase64-icon-button {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text-2);
  cursor: pointer;
}
.picbase64-icon-button:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
  color: var(--primary);
}
.picbase64-url-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0;
  color: var(--text-2);
  font-size: 13.5px;
  font-weight: 600;
}
.picbase64-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}
:root[data-theme="dark"] .picbase64-dropzone,
:root[data-theme="dark"] .picbase64-empty,
:root[data-theme="dark"] .picbase64-meta div {
  background: #161b18;
}
:root[data-theme="dark"] .picbase64-preview,
:root[data-theme="dark"] .picbase64-dialog-panel,
:root[data-theme="dark"] .picbase64-icon-button {
  background-color: #181d1a;
}
:root[data-theme="dark"] .picbase64-message,
:root[data-theme="dark"] .picbase64-url-error {
  border-color: #7f1d1d;
  background: rgba(127, 29, 29, .18);
}
@media (max-width: 991px) {
  .picbase64-preview-grid {
    grid-template-columns: 1fr;
  }
  .picbase64-empty {
    min-height: 280px;
  }
}
@media (max-width: 640px) {
  .picbase64-panel-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    row-gap: 6px;
  }
  .picbase64-limit,
  .picbase64-status {
    text-align: left;
  }
  .picbase64-action-row,
  .picbase64-meta {
    display: grid;
    grid-template-columns: 1fr;
  }
  .picbase64-action-row .btn,
  .picbase64-dialog-actions .btn {
    width: 100%;
    min-width: 0;
  }
  .picbase64-dialog-actions {
    display: grid;
    grid-template-columns: 1fr;
  }
  .picbase64-dropzone {
    min-height: 190px;
    padding: 18px 14px;
  }
  .picbase64-output > span {
    align-items: stretch;
    flex-direction: column;
  }
  .picbase64-output .btn {
    width: 100%;
  }
  .picbase64-input-body,
  .picbase64-result-body {
    padding: 14px;
  }
}