* { box-sizing: border-box; }

body {
  margin: 0 auto;
  max-width: 640px;
  padding: 1rem;
  font-family: system-ui, sans-serif;
  color: #222;
  background: #fafafa;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.5rem;
}

.brand {
  font-weight: 700;
  font-size: 1.2rem;
  color: #222;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  color: #777;
}

nav form { display: inline; }

button.link {
  border: none;
  background: none;
  padding: 0;
  color: #06c;
  cursor: pointer;
  font: inherit;
}

#dropzone {
  border: 2px dashed #bbb;
  border-radius: 8px;
  padding: 3rem 1rem;
  text-align: center;
  cursor: pointer;
  background: #fff;
}

#dropzone.dragover {
  border-color: #06c;
  background: #eef5ff;
}

#dropzone .hint { color: #999; margin-bottom: 0; }

.options {
  border: none;
  padding: 0;
  margin: 1rem 0;
  display: grid;
  gap: 0.6rem;
}

.option {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.option-label { width: 7.5rem; color: #555; }

.option div[id^="id_"] {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.option input[type="range"] { flex: 1; }

#results { list-style: none; padding: 0; }

.result {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 0.6rem 0.8rem;
  margin-bottom: 0.5rem;
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  flex-wrap: wrap;
}

.result.error {
  border-color: #d33;
  color: #d33;
}

.result .meta { color: #999; font-size: 0.85rem; }

.result .copy {
  border: 1px solid #ccc;
  background: #f4f4f4;
  border-radius: 4px;
  padding: 0.1rem 0.5rem;
  cursor: pointer;
}

.message { color: #2a7; }

form.login { display: grid; gap: 0.6rem; max-width: 20rem; }