* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

:root {
  --page-background: #fff;
  --page-text: #000;
  --link-color: #0000ee;
  --input-background: #fff;
  --input-border: #bdbdbd;
  --input-text: #333;
  --control-text: #111;
}

body {
  margin: 0;
  min-height: 100vh;
  position: relative;
  background: var(--page-background);
  font-family: Arial, Helvetica, sans-serif;
  color: var(--page-text);
  transition: background-color 160ms ease, color 160ms ease;
}

body.dark-mode {
  --page-background: #171717;
  --page-text: #f5f5f5;
  --link-color: #83b9ff;
  --input-background: #242424;
  --input-border: #777;
  --input-text: #f5f5f5;
  --control-text: #f5f5f5;
}

body.dark-mode .theme-toggle,
body.dark-mode .mode-button,
body.dark-mode button {
  background: var(--input-background);
  color: var(--page-text);
  border-color: var(--input-border);
}

body.dark-mode .mode-button.active {
  background: var(--page-text);
  color: var(--page-background);
}

.profile {
  position: absolute;
  top: 3px;
  left: 6px;
  display: flex;
  height: 24px;
  align-items: center;
  gap: 7px;
  font-size: 14px;
}

.avatar {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  overflow: hidden;
  background: #75ad4d;
  object-fit: cover;
}

.avatar-link {
  display: block;
  width: 24px;
  height: 24px;
}

a {
  color: var(--link-color);
  text-decoration: underline;
}

.theme-toggle {
  position: fixed;
  top: 3px;
  right: 6px;
  z-index: 1;
  display: flex;
  height: 24px;
  align-items: center;
  margin-top: 0;
  padding: 2px 7px;
  border: 1px solid var(--input-border);
  border-radius: 2px;
  background: var(--input-background);
  color: var(--control-text);
  font: 12px Arial, Helvetica, sans-serif;
  cursor: pointer;
}

.page-content {
  padding-top: 246px;
  text-align: center;
}

h1 {
  margin: 0 0 37px;
  font-size: 62px;
  line-height: 1;
  font-weight: 700;
}

.converter {
  margin: 0;
}

.mode-switch {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: 8px;
}

.conversion-options {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 12px;
}

select {
  margin-left: 4px;
  padding: 2px;
  border: 1px solid var(--input-border);
  border-radius: 2px;
  background: var(--input-background);
  color: var(--input-text);
  font: 12px Arial, Helvetica, sans-serif;
}

.mode-button {
  margin-top: 0;
  padding: 3px 7px;
  border: 1px solid var(--input-border);
  border-radius: 2px;
  background: var(--input-background);
  color: var(--control-text);
  font: 12px Arial, Helvetica, sans-serif;
  cursor: pointer;
}

.mode-button.active {
  background: var(--control-text);
  color: var(--input-background);
}

.input-row {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 5px;
}

input {
  width: 542px;
  height: 28px;
  padding: 3px 5px;
  border: 1px solid var(--input-border);
  border-radius: 2px;
  background: var(--input-background);
  color: var(--input-text);
  font: 13px Arial, Helvetica, sans-serif;
}

.upload-row {
  display: flex;
  align-items: flex-start;
  gap: 5px;
  justify-content: center;
}

.upload-box {
  display: flex;
  width: 542px;
  height: 28px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 6px;
  border: 1px solid var(--input-border);
  border-radius: 2px;
  background: var(--input-background);
  color: var(--input-text);
  font-size: 13px;
  text-align: left;
}

.upload-box input {
  width: auto;
  min-width: 0;
  flex: 1;
  height: auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--input-text);
  font-size: 12px;
}

.links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  width: 99px;
  font-size: 10px;
  line-height: 12px;
}

button {
  margin-top: 6px;
  padding: 2px 6px;
  color: var(--control-text);
  font: 14px Arial, Helvetica, sans-serif;
}

.status {
  min-height: 18px;
  margin: 10px 0 0;
  font-size: 12px;
}

.result-preview {
  display: block;
  width: min(100%, 585px);
  height: auto;
  margin: 12px auto 0;
  border: 1px solid var(--control-text);
  background: repeating-conic-gradient(#ddd 0 25%, #fff 0 50%) 0 / 16px 16px;
}

.download-link {
  display: inline-block;
  margin-top: 4px;
  font-size: 13px;
}

.description {
  margin: 28px 0 0;
  font-size: 22px;
  line-height: 27px;
}

.warning {
  margin: 132px 0 0;
  font-size: 14px;
}

.brand-link {
  position: fixed;
  right: 18px;
  bottom: 4px;
  font-size: 14px;
}

@media (max-width: 720px) {
  .page-content {
    padding: 170px 16px 40px;
  }

  h1 {
    font-size: 48px;
  }

  .input-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 99px;
    align-items: start;
  }

  input {
    width: 100%;
  }

  .upload-box {
    width: calc(100% - 104px);
  }

  .links {
    width: 99px;
  }
}