:root {
  color-scheme: light dark;
  font-family: system-ui, sans-serif;
  line-height: 1.5;
  color: light-dark(#222924, #edf2ed);
  background: light-dark(#f2f4ee, #181d19);
  --surface: light-dark(#fff, #222a24);
  --muted: light-dark(#556158, #b9c6bc);
  --accent: light-dark(#245a37, #b6e8b8);
  --line: light-dark(#899a89, #879e8b);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: clamp(1rem, 3vw, 2rem);
}

main {
  max-inline-size: 70rem;
  margin-inline: auto;
}

h1 {
  margin: 0 0 1rem;
  font-size: 1.375rem;
  line-height: 1.25;
}

p {
  margin: 0 0 1rem;
}

section {
  padding: clamp(1rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--surface);
}

.eyebrow {
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hint {
  color: var(--muted);
  font-size: 0.9375rem;
}

.dropzone {
  border: 2px dashed var(--line);
  border-radius: 0.5rem;
  padding: 1.25rem;
}

.dropzone.is-dragover {
  border-style: solid;
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.broken-zone {
  cursor: pointer;
  margin-block-end: 1rem;
}

.fake-link {
  text-decoration: underline;
}

button,
.button,
input[type="file"]::file-selector-button {
  border: 1px solid var(--accent);
  border-radius: 0.3rem;
  padding: 0.5rem 0.875rem;
  background: var(--surface);
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: var(--surface);
}

button:disabled {
  cursor: default;
  opacity: 0.5;
}

input[type="file"] {
  display: block;
  max-inline-size: 100%;
  font: inherit;
  margin-block: 0.5rem 1rem;
}

input[type="file"]::file-selector-button {
  margin-inline-end: 0.75rem;
}

.visually-hidden {
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

input[type="file"].visually-hidden {
  margin: 0;
}

:focus-visible,
input[type="file"]:focus-visible + label {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

/* Keep the label as plain text until the script is ready. */
.dropzone:not(.is-enhanced) .button {
  display: block;
  border: 0;
  padding: 0;
  background: none;
  color: inherit;
  cursor: default;
}

output {
  display: block;
  overflow-wrap: anywhere;
}

#attachments-status {
  margin-block-start: 1rem;
}

#attachments-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

#attachments-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.875rem;
  border-block-start: 1px solid var(--line);
  margin-block-start: 0.875rem;
}

#attachments-list span {
  overflow-wrap: anywhere;
  min-inline-size: 0;
}

#attachments-list button {
  flex-shrink: 0;
}

.actions {
  display: flex;
  gap: 0.75rem;
  margin-block-start: 1rem;
}

/* What the form would have sent. */
.result:not(:empty) {
  display: grid;
  gap: 0.25rem;
  margin-block-start: 1rem;
  padding: 0.875rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 0.5rem;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  overflow-wrap: anywhere;
}

.result strong {
  color: var(--accent);
}

.result__file {
  display: block;
  padding-inline-start: 1.25rem;
}

/* A visual bullet with empty alt text, so screen readers skip it. */
.result__file::before {
  content: "•" / "";
  display: inline-block;
  inline-size: 1.25rem;
  margin-inline-start: -1.25rem;
}

.result__note {
  color: var(--muted);
  font-size: 0.875rem;
}

@media (max-width: 40rem) {
  #attachments-list li {
    align-items: start;
    flex-direction: column;
    gap: 0.5rem;
  }
}