:root {
  --bg: #0b0d12;
  --bg-soft: #12151d;
  --card: #171b26;
  --border: #262b3a;
  --text: #e8eaf0;
  --muted: #9aa1b4;
  --accent: #7c5cff;
  --accent-2: #22d3ee;
  --success: #34d399;
  --warn: #fbbf24;
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  scroll-behavior: smooth;
}

a { color: inherit; text-decoration: none; }
code { background: rgba(124, 92, 255, 0.15); padding: 2px 6px; border-radius: 6px; font-size: 0.9em; }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 13, 18, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; }
.brand-mark { color: var(--accent); margin-right: 6px; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { color: var(--muted); font-size: 0.92rem; transition: color 0.15s; }
.nav-links a:hover { color: var(--text); }

/* Hero */
.hero {
  padding: 96px 24px 72px;
  text-align: center;
  background:
    radial-gradient(600px 300px at 20% 0%, rgba(124,92,255,0.18), transparent 60%),
    radial-gradient(600px 300px at 80% 10%, rgba(34,211,238,0.14), transparent 60%);
}
.hero-inner { max-width: 780px; margin: 0 auto; }
.pill {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(124, 92, 255, 0.12);
  border: 1px solid rgba(124, 92, 255, 0.35);
  color: #cabfff;
  font-size: 0.8rem;
  margin-bottom: 20px;
}
h1 {
  font-size: 2.6rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.accent { background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { color: var(--muted); font-size: 1.08rem; line-height: 1.6; margin-bottom: 32px; }

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.12s ease, opacity 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(90deg, var(--accent), #9b7bff); color: white; }
.btn-secondary { background: var(--card); border-color: var(--border); color: var(--text); }
.btn-secondary:hover { border-color: var(--accent); }
.full-width { width: 100%; text-align: center; margin-top: 10px; }

/* Sections */
.section-inner { max-width: 1100px; margin: 0 auto; padding: 72px 24px; }
h2 { font-size: 1.8rem; letter-spacing: -0.01em; margin: 0 0 8px; }
.muted { color: var(--muted); }
.muted.small { font-size: 0.8rem; }

/* How it works */
.how-grid {
  margin-top: 36px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.how-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.how-step {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: rgba(124,92,255,0.15);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  margin-bottom: 14px;
}
.how-card h3 { margin: 0 0 8px; font-size: 1.05rem; }
.how-card p { margin: 0; color: var(--muted); font-size: 0.9rem; line-height: 1.5; }

/* Demo */
.demo { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.demo-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 24px;
  align-items: start;
}
.upload-panel, .results-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone.drag-over { border-color: var(--accent); background: rgba(124,92,255,0.06); }
.dropzone-icon { font-size: 2.2rem; margin-bottom: 8px; }
.dropzone p { margin: 6px 0; }

.or-divider { display: flex; align-items: center; text-align: center; color: var(--muted); font-size: 0.8rem; margin: 20px 0; }
.or-divider::before, .or-divider::after { content: ""; flex: 1; border-bottom: 1px solid var(--border); }
.or-divider span { padding: 0 12px; }

textarea#text-input {
  width: 100%;
  min-height: 110px;
  resize: vertical;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 12px;
  font-family: inherit;
  font-size: 0.88rem;
}

.status {
  margin-top: 16px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 0.85rem;
  background: rgba(124,92,255,0.1);
  border: 1px solid rgba(124,92,255,0.3);
}
.status.error { background: rgba(248, 113, 113, 0.1); border-color: rgba(248,113,113,0.4); color: #fca5a5; }
.status.hidden, .hidden { display: none !important; }

.placeholder { text-align: center; padding: 80px 20px; color: var(--muted); }
.placeholder-icon { font-size: 2.4rem; margin-bottom: 10px; }

.result-meta { display: flex; gap: 10px; margin-bottom: 20px; flex-wrap: wrap; }
.badge {
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg);
}
.badge.source-cache { color: var(--accent-2); border-color: rgba(34,211,238,0.4); }
.badge.source-local { color: var(--success); border-color: rgba(52,211,153,0.4); }
.badge.source-ai { color: var(--warn); border-color: rgba(251,191,36,0.4); }

.result-card {
  border-top: 1px solid var(--border);
  padding: 18px 0;
}
.result-card:first-child { border-top: none; padding-top: 0; }
.result-card h3 { margin: 0 0 6px; font-size: 1.3rem; }
.result-card h4 { margin: 0 0 12px; font-size: 0.95rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.contact-line { color: var(--muted); font-size: 0.92rem; }
.links-line { margin-top: 6px; display: flex; gap: 10px; flex-wrap: wrap; }
.links-line a { color: var(--accent-2); font-size: 0.85rem; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: rgba(124,92,255,0.1);
  border: 1px solid rgba(124,92,255,0.3);
  color: #d6c9ff;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
}

.exp-item, .edu-item, .proj-item { margin-bottom: 16px; }
.exp-item:last-child, .edu-item:last-child, .proj-item:last-child { margin-bottom: 0; }
.exp-title { font-weight: 600; font-size: 0.95rem; }
.exp-sub { color: var(--muted); font-size: 0.85rem; margin-bottom: 6px; }
.exp-bullets { margin: 6px 0 0; padding-left: 18px; color: var(--text); font-size: 0.88rem; line-height: 1.6; }

.raw-json { margin-top: 20px; }
.raw-json summary { cursor: pointer; color: var(--muted); font-size: 0.85rem; }
.raw-json pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  overflow-x: auto;
  font-size: 0.78rem;
  margin-top: 10px;
  max-height: 400px;
}

/* Stats */
.stats-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.stat-value { font-size: 1.7rem; font-weight: 700; color: var(--accent-2); }
.stat-label { color: var(--muted); font-size: 0.8rem; margin-top: 4px; }
#refresh-stats { margin-top: 24px; }

.footer {
  text-align: center;
  padding: 32px 24px;
  color: var(--muted);
  font-size: 0.82rem;
}

@media (max-width: 900px) {
  .how-grid { grid-template-columns: repeat(2, 1fr); }
  .demo-grid { grid-template-columns: 1fr; }
  h1 { font-size: 2rem; }
}