:root {
  --bg: #08111f;
  --bg-soft: #101d33;
  --card: rgba(11, 23, 43, 0.82);
  --card-border: rgba(151, 182, 255, 0.18);
  --text: #f5f7fb;
  --muted: #aab7d1;
  --accent: #ff6b35;
  --accent-strong: #ffd166;
  --success: #6ee7b7;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 107, 53, 0.28), transparent 28%),
    radial-gradient(circle at top right, rgba(255, 209, 102, 0.22), transparent 22%),
    linear-gradient(145deg, #07101d 0%, #09182c 38%, #0a1322 100%);
}

.page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 64px;
}

.hero {
  padding: 40px;
  border: 1px solid var(--card-border);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(17, 31, 55, 0.88), rgba(8, 17, 31, 0.96));
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.82rem;
  color: var(--accent-strong);
}

h1,
h2 {
  margin: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(2.5rem, 5vw, 4.4rem);
  line-height: 0.95;
}

.hero-copy,
.card-head p,
.status {
  color: var(--muted);
}

.hero-copy {
  max-width: 720px;
  margin: 18px 0 0;
  font-size: 1.05rem;
  line-height: 1.7;
}

.search-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  margin-top: 28px;
}

.search-panel input,
.search-panel button,
.sample-chip {
  font: inherit;
}

.search-panel input {
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
}

.search-panel input::placeholder {
  color: #8d9ab5;
}

.search-panel button,
.sample-chip {
  border: 0;
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.18s ease, background 0.18s ease;
}

.search-panel button {
  padding: 0 24px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent), #ff8c42);
  color: #141414;
  font-weight: 700;
}

.search-panel button:hover,
.sample-chip:hover {
  transform: translateY(-1px);
}

.hint-box,
.card {
  border: 1px solid var(--card-border);
  background: var(--card);
  box-shadow: var(--shadow);
}

.hint-box {
  display: inline-flex;
  gap: 14px;
  margin-top: 22px;
  padding: 12px 16px;
  border-radius: 999px;
  align-items: center;
}

.hint-title {
  color: var(--muted);
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-top: 22px;
}

.card {
  padding: 26px;
  border-radius: 24px;
}

.card-head {
  margin-bottom: 18px;
}

.card-head p {
  margin: 8px 0 0;
}

.sample-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.sample-chip {
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  text-align: left;
}

.status {
  min-height: 24px;
}

.answer-box {
  min-height: 220px;
  margin: 16px 0 0;
  padding: 20px;
  border-radius: 18px;
  background: rgba(0, 0, 0, 0.22);
  color: var(--success);
  white-space: pre-wrap;
  line-height: 1.6;
  overflow: auto;
}

.file-card {
  margin-top: 22px;
}

.file-list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.8;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 860px) {
  .page-shell {
    width: min(100% - 20px, 1120px);
    padding-top: 20px;
  }

  .hero,
  .card {
    padding: 20px;
    border-radius: 20px;
  }

  .content-grid {
    grid-template-columns: 1fr;
  }

  .search-panel {
    grid-template-columns: 1fr;
  }

  .search-panel button {
    padding: 16px 18px;
  }
}