/* Professor Paiko — Base Styles — mobile-first */

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-body); background: var(--color-bg); color: var(--color-text); line-height: 1.6; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: var(--font-body); border: none; background: none; }
ul { list-style: none; }

/* ── LAYOUT ── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}
.section { padding: 3.25rem 0; }
@media (min-width: 768px) { .section { padding: 5.5rem 0; } }
@media (min-width: 1024px) { .section { padding: 7rem 0; } }

/* ── TYPOGRAPHY ── */
.display {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: '';
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
  flex-shrink: 0;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.625rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: all 200ms ease;
  white-space: nowrap;
  cursor: pointer;
  border: none;
  min-height: 48px;
}
.btn-accent {
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
}
.btn-accent:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(45,90,69,.35);
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-tint);
}

/* ── BADGE / TAG ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 9999px;
  padding: 0.3rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
}
.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse 2s ease infinite;
  flex-shrink: 0;
}

/* ── ANIMATIONS ── */
.fade-up {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 550ms ease, transform 550ms ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .55; transform: scale(1.35); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

/* ── SECTION HEADER (shared) ── */
.section-header {
  max-width: 640px;
  margin-bottom: 2.25rem;
}
@media (min-width: 768px) {
  .section-header { margin-bottom: 3rem; }
}
.section-header.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}
/* Gecentreerde eyebrow: streepje pas op groter scherm (op mobiel raakt het los bij regelafbreking) */
.section-header.center .eyebrow::before { display: none; }
@media (min-width: 768px) {
  .section-header.center .eyebrow::before { display: block; }
}
.section-header h2 {
  font-size: clamp(1.875rem, 5vw, 3rem);
  margin-bottom: 1rem;
}
.section-header p {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}