* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: #f5f5f7;
  color: #1d1d1f;
  display: flex;
  justify-content: center;
  padding: 3rem 1rem;
  margin: 0;
}

.card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 2rem;
  width: 100%;
  max-width: 420px;
}

h1 {
  font-size: 1.25rem;
  margin: 0 0 1.5rem;
}

section {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

input[type="file"] {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #d2d2d7;
  border-radius: 6px;
  font-size: 0.9rem;
}

button {
  margin-top: 0.75rem;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  background: #0071e3;
  color: #fff;
  font-size: 0.9rem;
  cursor: pointer;
}

button:disabled {
  background: #b0b0b5;
  cursor: not-allowed;
}

.link-btn {
  background: none;
  color: #0071e3;
  padding: 0;
  margin: 0;
  font-size: 0.85rem;
  text-decoration: underline;
}

#signed-in-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.5rem;
}

#progress-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

progress {
  flex: 1;
}

.muted {
  color: #6e6e73;
  font-size: 0.85rem;
}

.error {
  color: #d70015;
}

[hidden] {
  display: none !important;
}