/* ═══════════════════════════════════════════════
   ACUFF AGENTIC AI — CONTROL TOWER
   Global Design System
═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg:           #ffffff;
  --bg-subtle:    #f8fafc;
  --bg-dark:      #020617;
  --bg-dark-mid:  #0f172a;
  --text-main:    #0f172a;
  --text-muted:   #475569;
  --text-light:   #94a3b8;
  --border:       #e2e8f0;
  --border-dark:  #1e293b;
  --primary-blue: #2563eb;
  --blue-light:   #dbeafe;
  --blue-dim:     rgba(37,99,235,0.08);
  --green:        #10b981;
  --amber:        #f59e0b;
  --coral:        #ef4444;
  --radius:       12px;
  --radius-sm:    8px;
  --max-width:    1080px;
  --nav-height:   64px;
  --mono:         'JetBrains Mono', 'Courier New', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.6;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ── */
header {
  height: var(--nav-height);
  border-bottom: 1px solid var(--border);
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}
.logo {
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  color: var(--text-main);
  text-transform: uppercase;
  text-decoration: none;
  line-height: 1.2;
}
.logo span {
  display: block;
  font-size: 0.7rem;
  color: var(--text-light);
  letter-spacing: 0.08em;
  font-weight: 400;
}
nav { display: flex; align-items: center; gap: 4px; }
nav a {
  padding: 6px 10px;
  border-radius: 6px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  transition: color 0.15s, background 0.15s;
}
nav a:hover { color: var(--text-main); background: var(--bg-subtle); }
nav a.active { color: var(--primary-blue); background: var(--blue-dim); }

/* ── HERO ── */
.hero {
  max-width: var(--max-width);
  margin: 72px auto 48px;
  padding: 0 24px;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary-blue);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-eyebrow::before { content: ''; display: inline-block; width: 24px; height: 1px; background: var(--primary-blue); }
.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  color: var(--text-main);
}
.hero h1 em { font-style: normal; color: var(--primary-blue); }
.hero .sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  font-weight: 400;
  max-width: 600px;
  margin-bottom: 32px;
  line-height: 1.6;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}
.btn-primary { background: var(--primary-blue); color: #fff; }
.btn-primary:hover { background: #1d4ed8; transform: translateY(-1px); }
.btn-secondary { background: var(--blue-light); color: var(--primary-blue); }
.btn-secondary:hover { background: #bfdbfe; }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--bg-subtle); color: var(--text-main); }
.btn-dark { background: var(--primary-blue); color: #fff; }
.btn-dark:hover { background: #1d4ed8; }

/* ── SECTIONS ── */
section {
  max-width: var(--max-width);
  margin: 72px auto;
  padding: 0 24px;
}
section.wide { max-width: 100%; padding: 72px 40px; }
section.dark {
  background: var(--bg-dark);
  color: #fff;
  max-width: 100%;
  padding: 80px 40px;
}
section.dark-mid {
  background: var(--bg-dark-mid);
  color: #fff;
  max-width: 100%;
  padding: 72px 40px;
}
.section-inner { max-width: var(--max-width); margin: 0 auto; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-blue);
  background: var(--blue-dim);
  border: 1px solid rgba(37,99,235,0.15);
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.tag-green { color: var(--green); background: rgba(16,185,129,0.08); border-color: rgba(16,185,129,0.2); }
.tag-amber { color: var(--amber); background: rgba(245,158,11,0.08); border-color: rgba(245,158,11,0.2); }
.tag-coral { color: var(--coral); background: rgba(239,68,68,0.08); border-color: rgba(239,68,68,0.2); }

.section-title {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  line-height: 1.2;
}
.section-title em { font-style: normal; color: var(--primary-blue); }
.section-body {
  max-width: 640px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.section-body + .section-body { margin-top: -6px; }
.section-title.white { color: #fff; }
.section-body.white { color: #94a3b8; }

/* ── CARD GRID ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 32px;
}
.card-grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card-grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover { box-shadow: 0 4px 24px rgba(0,0,0,0.06); transform: translateY(-2px); }
.card-dark {
  background: var(--border-dark);
  border-color: #1e293b;
}
.card-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--blue-dim);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
  font-size: 1.2rem;
}
.card h4 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }

/* ── PILL LIST ── */
.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.pill {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-subtle);
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--mono);
  letter-spacing: 0.03em;
}
.pill-blue { border-color: rgba(37,99,235,0.3); background: var(--blue-dim); color: var(--primary-blue); }

/* ── LIFECYCLE FLOW ── */
.lifecycle {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 24px;
  font-family: var(--mono);
  font-size: 0.78rem;
}
.lifecycle-step {
  display: flex;
  align-items: center;
  gap: 0;
}
.lifecycle-node {
  padding: 6px 12px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  color: var(--text-muted);
  white-space: nowrap;
}
.lifecycle-node.active { background: var(--primary-blue); color: #fff; border-color: var(--primary-blue); }
.lifecycle-arrow {
  padding: 0 6px;
  color: var(--text-light);
  font-size: 0.9rem;
}

/* ── PRODUCT GRID (display page) ── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.product-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg);
  transition: box-shadow 0.2s, transform 0.2s;
}
.product-card:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.08); transform: translateY(-3px); }
.media-placeholder {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: #4ade80;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}
.card-content { padding: 20px; }
.card-content h3 { font-size: 1.05rem; font-weight: 600; margin: 8px 0 6px; }
.card-content p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }

/* ── QUOTE BLOCK ── */
.quote-block {
  border-left: 3px solid var(--primary-blue);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--blue-dim);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.quote-block p { font-size: 1.05rem; color: var(--text-main); font-style: italic; margin: 0; }
.quote-block cite { display: block; font-size: 0.8rem; color: var(--text-muted); margin-top: 8px; font-style: normal; }

/* ── STAT ROW ── */
.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.stat { text-align: left; }
.stat-num { font-size: 2.2rem; font-weight: 700; color: var(--primary-blue); letter-spacing: -0.02em; }
.stat-label { font-size: 0.82rem; color: var(--text-muted); margin-top: 2px; }

/* ── DIVIDER ── */
.divider { height: 1px; background: var(--border); margin: 48px 0; }
.divider-dark { height: 1px; background: var(--border-dark); margin: 48px 0; }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 28px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}
footer .footer-logo {
  font-weight: 700;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8rem;
}
footer .footer-links { display: flex; gap: 20px; }
footer .footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.82rem; }
footer .footer-links a:hover { color: var(--text-main); }

/* ── UTILITIES ── */
.mono { font-family: var(--mono); }
.text-blue { color: var(--primary-blue); }
.text-muted { color: var(--text-muted); }
.text-white { color: #fff; }
.text-light { color: #94a3b8; }
.mb-0 { margin-bottom: 0; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  header { padding: 0 16px; }
  nav { gap: 2px; }
  nav a { padding: 5px 7px; font-size: 0.75rem; }
  .hero { margin-top: 40px; }
  section.dark, section.dark-mid, section.wide { padding: 48px 24px; }
  footer { flex-direction: column; align-items: flex-start; padding: 24px; }
}