:root {
  color-scheme: light;
  --bg: #f4efe7;
  --card: #fffaf1;
  --ink: #251b14;
  --muted: #6d5d50;
  --line: rgba(37, 27, 20, 0.18);
  --accent: #155f46;
  --accent-dark: #0d3f2f;
  --danger: #8b1e1e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #fff8ec 0, var(--bg) 48%, #e8ddcf 100%);
  color: var(--ink);
}

.upload-shell {
  width: min(760px, 100%);
  margin: 0 auto;
  padding: 28px 16px 48px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 16px 45px rgba(37, 27, 20, 0.14);
  padding: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.76rem;
  font-weight: 800;
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 8vw, 3.6rem);
  line-height: 0.95;
}

.intro {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.45;
}

.upload-form {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 7px;
  font-weight: 750;
}

input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  font: inherit;
  background: #fff;
  color: var(--ink);
}

textarea {
  resize: vertical;
}

.key-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: -8px;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 16px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button.primary {
  background: var(--accent);
  color: white;
  min-height: 52px;
}

button.primary:hover,
button.primary:focus {
  background: var(--accent-dark);
}

button.secondary,
#saveKeyBtn {
  background: rgba(21, 95, 70, 0.11);
  color: var(--accent-dark);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.preview-wrap {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 10px;
  background: #fff;
}

.preview-wrap img {
  display: block;
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  border-radius: 12px;
}

.status {
  min-height: 1.5em;
  margin: 0;
  color: var(--muted);
  font-weight: 700;
}

.status.ok {
  color: var(--accent);
}

.status.error {
  color: var(--danger);
}

@media (max-width: 520px) {
  .card {
    padding: 20px;
    border-radius: 18px;
  }

  .key-actions {
    display: grid;
  }
}