/* =====================
   BASE & GLOBAL — Mobile First
   ===================== */
body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 300;
}

@media (min-width: 768px) {
  body { font-size: clamp(0.95rem, 1.2vw, 1.05rem); }
}

/* ---- Typography ---- */
h1,h2,h3,h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.15;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.2rem, 8vw, 5rem); }
h2 { font-size: clamp(1.9rem, 6vw, 3.5rem); }
h3 { font-size: clamp(1.1rem, 3vw, 1.5rem); }

p  { color: var(--text-secondary); line-height: 1.7; }
em { font-style: italic; color: var(--accent-light); }
strong { font-weight: 600; color: var(--text-primary); }

/* ---- Containers ---- */
.section-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--sp-3xl) var(--container-padding);
}

@media (min-width: 768px) {
  .section-container { padding: var(--sp-4xl) var(--container-padding); }
}

/* ---- Section header ---- */
.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--sp-md);
}

.section-title { margin-bottom: var(--sp-lg); }

.section-desc {
  max-width: 52ch;
  font-size: 1rem;
}

.section-header { margin-bottom: var(--sp-2xl); }

@media (min-width: 768px) {
  .section-header { margin-bottom: var(--sp-3xl); }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--r-full);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--dur-med) var(--ease);
  white-space: nowrap;
  min-height: 44px; /* Accessible tap target */
  min-width: 44px;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 0 var(--accent-glow);
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent-light);
  box-shadow: 0 4px 24px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover,
.btn-ghost:focus-visible {
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.04);
}

.btn-full { width: 100%; }

/* Focus visible global */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

/* ---- Social Proof Strip ---- */
.social-proof {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--sp-lg) var(--container-padding);
}

@media (min-width: 768px) {
  .social-proof { padding: var(--sp-xl) var(--container-padding); }
}

.sp-container {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

@media (min-width: 640px) {
  .sp-container {
    flex-direction: row;
    align-items: center;
    gap: var(--sp-2xl);
  }
}

.sp-label {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

.sp-logos {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
}

.sp-logo {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  transition: color var(--dur-fast), border-color var(--dur-fast);
  min-height: 36px;
  display: inline-flex;
  align-items: center;
}
.sp-logo:hover {
  color: var(--text-secondary);
  border-color: var(--border-strong);
}