:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #1a2332;
  --muted: #5c6b7f;
  --line: #d7dce7;
  --primary: #1e5a8a;
  --primary-hover: #2569a0;
  --ok: #18a058;
  --bad: #e74c3c;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}

body {
  padding: 16px 14px 28px;
}

.page {
  width: min(94vw, 680px);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: clamp(1.35rem, 4vw, 1.75rem);
}

.hero p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.95rem;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 8px 24px rgba(12, 26, 46, 0.06);
}

label {
  font-size: 0.85rem;
  font-weight: 600;
}

.url-input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 0.92rem;
  color: var(--text);
  background: #fff;
}

.url-input:focus {
  outline: 2px solid rgba(30, 90, 138, 0.35);
  border-color: var(--primary);
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 11px 18px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
}

.status {
  min-height: 1.4em;
  font-size: 0.88rem;
  line-height: 1.5;
}

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

.status.err {
  color: var(--bad);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.84rem;
}

.grid-title {
  margin: 4px 0 0;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.image-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f8fafc;
}

.image-card.is-default {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(30, 90, 138, 0.15);
}

.image-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
}

.image-card-meta {
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

.image-card .btn-sm {
  width: 100%;
}

.note {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.55;
}

.toolbar {
  display: flex;
  justify-content: flex-end;
}

.toolbar .btn-ghost {
  font-size: 0.82rem;
  padding: 8px 12px;
}