:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #171717;
  color: #f1f1f1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #171717;
}

button,
input,
select,
textarea {
  font: inherit;
}

.mobile-shell {
  width: min(100%, 620px);
  min-height: 100vh;
  margin: 0 auto;
  padding: max(14px, env(safe-area-inset-top)) 14px calc(96px + env(safe-area-inset-bottom));
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

h1 {
  margin: 0;
  font-size: 24px;
}

header p {
  margin: 3px 0 0;
  color: #aaa;
}

header a {
  color: #9fc5ff;
  text-decoration: none;
  font-weight: 700;
}

.card {
  display: grid;
  gap: 14px;
  background: #252525;
  border: 1px solid #383838;
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 12px;
}

label {
  display: grid;
  gap: 7px;
  color: #ddd;
  font-weight: 700;
}

textarea,
input,
select {
  width: 100%;
  min-height: 44px;
  border: 1px solid #555;
  border-radius: 7px;
  background: #303030;
  color: #fff;
  padding: 10px;
}

textarea {
  resize: vertical;
  line-height: 1.35;
}

button {
  min-height: 44px;
  border: 1px solid #575757;
  border-radius: 7px;
  background: #3a3a3a;
  color: #fff;
  padding: 10px 12px;
  font-weight: 800;
}

button.primary {
  background: #2374e1;
  border-color: #2374e1;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.input-action {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.check-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.check-row label {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 10px;
  border: 1px solid #494949;
  border-radius: 7px;
  background: #303030;
}

.check-row input {
  width: 20px;
  min-height: 20px;
}

.preview {
  min-height: 132px;
  display: grid;
  place-items: center;
  overflow: auto;
  background: #1f1f1f;
  border: 1px dashed #555;
  border-radius: 7px;
  padding: 12px;
}

.preview img {
  max-width: 100%;
  image-rendering: crisp-edges;
}

.message {
  min-height: 22px;
  margin: 0;
  color: #d5d5d5;
  line-height: 1.35;
}

.message.error {
  color: #ffb4b4;
}

.message.success {
  color: #a7e8af;
}

.field-note {
  margin: 0;
  color: #b7b7b7;
  font-size: 13px;
  line-height: 1.35;
}

.bottom-actions {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  width: min(100%, 620px);
  margin: 0 auto;
  padding: 12px 14px calc(12px + env(safe-area-inset-bottom));
  background: rgba(23, 23, 23, 0.96);
  border-top: 1px solid #333;
}