/* ============================================================
   QCN PRODUCTION — Global styles
   ============================================================ */

body {
  font-family: var(--font-body);
  background: var(--bg-secondary);
  color: var(--text-primary);
  background-image:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(139,92,246,0.10), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 10%, rgba(78,163,255,0.06), transparent 60%);
  background-repeat: no-repeat;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

@media (max-width: 640px) {
  .container { padding: 0 var(--space-4); }
}

section {
  padding: var(--space-9) 0;
  position: relative;
}

@media (max-width: 768px) {
  section { padding: var(--space-7) 0; }
}

/* ---------- Typography ---------- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.3px;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.6rem, 5.5vw, 4.6rem); line-height: 1.05; letter-spacing: 0.5px; }
h2 { font-size: clamp(2rem, 3.6vw, 3rem); line-height: 1.1; }
h3 { font-size: clamp(1.3rem, 2vw, 1.7rem); line-height: 1.25; }
h4 { font-size: 1.1rem; line-height: 1.3; }

p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

.lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 640px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-pale);
  margin-bottom: var(--space-3);
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 2px;
}

.section-head {
  max-width: 720px;
  margin-bottom: var(--space-7);
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.mono {
  font-family: var(--font-mono);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
              filter var(--transition-fast), background-color var(--transition-fast),
              border-color var(--transition-fast), color var(--transition-fast);
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: var(--shadow-button);
}

.btn-primary:hover {
  filter: brightness(1.08);
  box-shadow: var(--shadow-button-hover);
  transform: translateY(-1px);
}

.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-paler);
  box-shadow: inset 0 0 0 1px var(--glow-accent-faint);
}

.btn-block { width: 100%; }

.btn-sm {
  padding: 9px 18px;
  font-size: 0.8rem;
}

/* ---------- Cards / Surfaces ---------- */

.surface {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
}

.badge-accent {
  color: var(--accent-paler);
  border-color: rgba(139,92,246,0.4);
  background: rgba(139,92,246,0.08);
}

.badge-demo {
  color: #fbbf24;
  border-color: rgba(251,191,36,0.35);
  background: rgba(251,191,36,0.08);
}

/* ---------- Divider ---------- */

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
  border: none;
}

/* ---------- Utility ---------- */

.text-center { text-align: center; }
.mt-1 { margin-top: var(--space-3); }
.mt-2 { margin-top: var(--space-5); }
.mt-3 { margin-top: var(--space-7); }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- Reveal animation ---------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Scrollbar ---------- */

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 8px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-dark); }