:root {
  color-scheme: light dark;
  font-family: "Noto Sans JP", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

body {
  margin: 0;
  background: #111827;
  color: #e5e7eb;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
}

h1,
h2 {
  margin-bottom: 0.75rem;
}

.description {
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.panel {
  background: #1f2937;
  border: 1px solid #374151;
  border-radius: 0.75rem;
  padding: 1rem;
  margin-bottom: 1rem;
}

input[type="file"] {
  display: block;
  margin: 0.75rem 0;
}

.file-label {
  display: inline-block;
  font-weight: 600;
}

#preview {
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  border-radius: 0.5rem;
  border: 1px solid #4b5563;
  background: #0b1220;
  margin-bottom: 0.75rem;
}

.status {
  margin: 0.5rem 0 0;
}

.url-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.url-item {
  border: 1px solid #4b5563;
  border-radius: 0.5rem;
  padding: 0.75rem;
  background: #111827;
}

.url-main {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.url-link {
  color: #93c5fd;
  text-decoration: underline;
  word-break: break-all;
  flex: 1;
}

.url-input {
  flex: 1;
  width: 100%;
  border-radius: 0.4rem;
  border: 1px solid #6b7280;
  padding: 0.45rem;
  background: #0b1220;
  color: #e5e7eb;
}

.controls {
  margin-top: 0.5rem;
}

button {
  border: 1px solid #9ca3af;
  background: #1f2937;
  color: #f9fafb;
  border-radius: 0.4rem;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
}

button:hover {
  background: #374151;
}

.safety {
  margin: 0.5rem 0 0;
  font-size: 0.95rem;
}

.safe {
  color: #86efac;
}

.caution {
  color: #fcd34d;
}

.risky {
  color: #fca5a5;
}