:root {
  --bg: #0f1420;
  --card: #1a2233;
  --card-border: #2a3650;
  --text: #e8edf6;
  --muted: #94a3b8;
  --accent: #4f8cff;
  --accent-hover: #3a78f0;
  --error: #ff6b6b;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #1c2740, var(--bg));
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
}

a { color: var(--accent); }

.nav {
  display: flex;
  justify-content: center;
  gap: 24px;
  padding: 18px;
  border-bottom: 1px solid var(--card-border);
}
.nav a { color: var(--muted); text-decoration: none; font-weight: 600; }
.nav a.active, .nav a:hover { color: var(--text); }

.hero { text-align: center; padding: 40px 20px 8px; }
.hero h1 { font-size: 2rem; margin: 0 0 8px; }
.tagline { color: var(--muted); max-width: 640px; margin: 0 auto; }

main { max-width: 820px; margin: 24px auto; padding: 0 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 20px;
  box-shadow: 0 12px 40px rgba(0,0,0,.35);
}

label { display: block; font-weight: 600; margin: 16px 0 6px; }
textarea, input[type="email"], input[type="search"] {
  width: 100%;
  background: #0f1626;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--text);
  padding: 12px 14px;
  font-size: 1rem;
  font-family: inherit;
  resize: vertical;
}
textarea:focus, input:focus { outline: none; border-color: var(--accent); }
.hint { color: var(--muted); font-size: .85rem; margin: 4px 2px 0; }
.notice {
  background: #15233d;
  border: 1px solid var(--card-border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--muted);
  font-size: .9rem;
  margin: 16px 0 0;
}

button {
  margin-top: 20px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 12px 22px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s ease;
}
button:hover { background: var(--accent-hover); }
button:disabled { opacity: .6; cursor: default; }
button.secondary { background: transparent; border: 1px solid var(--card-border); color: var(--text); }
button.secondary:hover { background: #232f47; }

.error { color: var(--error); margin-top: 14px; }

.examples { margin-top: 22px; }
.examples summary { cursor: pointer; color: var(--muted); }
.examples ul { color: var(--muted); }

.spinner {
  width: 42px; height: 42px;
  border: 4px solid var(--card-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 18px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.permalink {
  display: block;
  background: #0f1626;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 10px 12px;
  margin: 8px 0 4px;
  word-break: break-all;
  font-size: .85rem;
  color: var(--muted);
}

.report-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.report-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.report-actions button { margin-top: 0; padding: 8px 14px; font-size: .9rem; }
.report-question { color: var(--muted); border-left: 3px solid var(--accent); padding-left: 12px; }
.report-body { margin-top: 16px; }
.report-body table { border-collapse: collapse; width: 100%; margin: 14px 0; }
.report-body th, .report-body td { border: 1px solid var(--card-border); padding: 8px 10px; text-align: left; }
.report-body th { background: #0f1626; }
.report-body code { background: #0f1626; padding: 2px 6px; border-radius: 5px; }
.report-body pre { background: #0f1626; padding: 14px; border-radius: 10px; overflow-x: auto; }
.report-body h1, .report-body h2, .report-body h3 { margin-top: 1.4em; }

/* History */
.history-item {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 18px 20px;
  margin-bottom: 14px;
  transition: border-color .15s ease, transform .05s ease;
}
.history-item:hover { border-color: var(--accent); }
.history-item .q { font-weight: 600; margin: 0 0 6px; }
.history-item .snippet { color: var(--muted); margin: 0; font-size: .92rem; }
.history-item .date { color: var(--muted); font-size: .8rem; margin-top: 8px; }
.search-row { display: flex; gap: 10px; align-items: center; }
.search-row input { margin: 0; }
.search-row button { margin: 0; }
.pager { display: flex; justify-content: center; gap: 12px; margin-top: 18px; align-items: center; }
.muted-center { text-align: center; color: var(--muted); padding: 20px; }

footer { text-align: center; color: var(--muted); font-size: .85rem; padding: 24px 16px 48px; }