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

:root {
  --black:        #0A0E14;
  --dark:         #0f1520;
  --card:         #141d2b;
  --border:       rgba(255,255,255,0.07);
  --border-solid: #1e2a3a;
  --muted:        #6b7a99;
  --light:        #94a3b8;
  --white:        #f0f4ff;
  --accent:       #3B82F6;
  --accent-dark:  #2563eb;
  --accent-glow:  rgba(59,130,246,0.12);
  --radius:       12px;
  --radius-sm:    8px;
}

body.light-mode {
  --black:        #f0f4f9;
  --dark:         #e6edf6;
  --card:         #dce5f2;
  --border:       rgba(0,0,0,0.07);
  --border-solid: #c0cfe8;
  --muted:        #6b7a99;
  --light:        #3a4a6a;
  --white:        #0a0e14;
  --accent:       #2563eb;
  --accent-dark:  #1d4ed8;
  --accent-glow:  rgba(37,99,235,0.08);
}

/* Nav stays dark in light mode */
body.light-mode nav { background: rgba(10,14,20,0.92); }
body.light-mode nav .logo-erwin { color: #ffffff; }
body.light-mode nav .logo-ai    { color: var(--accent); }
body.light-mode .theme-toggle { color: #888; border-color: rgba(255,255,255,0.15); }
body.light-mode .theme-toggle:hover { color: #f0f4ff; border-color: rgba(255,255,255,0.3); }

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--white);
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(10,14,20,0.80);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.logo-icon { flex-shrink: 0; color: var(--accent); }
.logo-erwin { color: #ffffff; }
.logo-ai    { color: var(--accent); }

.nav-cta {
  background: var(--accent);
  color: #ffffff;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.85rem;
  padding: 0.5rem 1.2rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}

.nav-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(59,130,246,0.3);
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.theme-toggle:hover { border-color: rgba(255,255,255,0.2); color: var(--white); }

.nav-right { display: flex; align-items: center; gap: 0.6rem; }

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 9rem 2.5rem 6rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 100%);
}

.hero::after {
  content: '';
  position: absolute;
  top: -15%; right: -5%;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(59,130,246,0.08) 0%, transparent 65%);
  pointer-events: none;
}

.hero-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.75rem;
  opacity: 0;
  animation: fadeUp 0.6s ease forwards 0.1s;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.hero-label::before {
  content: '';
  display: inline-block;
  width: 24px; height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

.hero h1 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: clamp(3rem, 7.5vw, 7rem);
  line-height: 1.0;
  letter-spacing: -0.04em;
  max-width: 880px;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 0.25s;
}

.hero h1 em { font-style: normal; color: var(--accent); }

.hero-sub {
  margin-top: 2rem;
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--light);
  max-width: 500px;
  line-height: 1.75;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 0.4s;
}

.hero-actions {
  margin-top: 3rem;
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 0.55s;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.92rem;
  padding: 0.8rem 1.8rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59,130,246,0.35);
}

.btn-secondary {
  background: rgba(255,255,255,0.04);
  color: var(--light);
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 0.92rem;
  padding: 0.8rem 1.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.15);
  color: var(--white);
}

/* SECTIES */
.section { padding: 6rem 2.5rem; }
.section-inner { max-width: 1100px; margin: 0 auto; }

.section-tag {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.section-tag::before {
  content: '';
  display: inline-block;
  width: 20px; height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

.section h2 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

/* PIJNPUNTEN */
.herkenning-intro {
  color: var(--muted);
  max-width: 560px;
  font-size: 1rem;
  line-height: 1.8;
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-top: 3rem;
}

.pain-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.25rem 2rem;
  transition: border-color 0.25s, transform 0.2s, box-shadow 0.25s;
}

.pain-item:hover {
  border-color: rgba(59,130,246,0.35);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.pain-number {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--border-solid);
  line-height: 1;
  margin-bottom: 1rem;
  transition: color 0.2s;
}

.pain-item:hover .pain-number { color: var(--accent); }

.pain-item h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 0.55rem;
  color: var(--white);
}

.pain-item p { font-size: 0.88rem; color: var(--muted); line-height: 1.65; }

/* DIENSTEN */
.diensten { background: var(--dark); }

.dienst-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-top: 3rem;
}

.dienst-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.25rem 2rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.2s, box-shadow 0.25s;
}

.dienst-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.dienst-card:hover {
  border-color: rgba(59,130,246,0.3);
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.35);
}

.dienst-card:hover::before { opacity: 1; }

.dienst-icon { font-size: 1.6rem; margin-bottom: 1.25rem; display: block; }

.dienst-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.65rem;
  letter-spacing: -0.01em;
}

.dienst-card p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.dienst-detail {
  font-size: 0.77rem;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.dienst-detail::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
}

/* Featured dienst kaart */
.dienst-card--featured {
  border-color: rgba(59,130,246,0.35);
  background: linear-gradient(145deg, var(--card) 0%, rgba(59,130,246,0.06) 100%);
}

.dienst-card--featured::before { opacity: 1; }

.dienst-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(59,130,246,0.25);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

/* WERKWIJZE */
.werkwijze-intro {
  color: var(--muted);
  max-width: 520px;
  font-size: 0.95rem;
  line-height: 1.8;
  margin-top: 0.5rem;
}

.werkwijze-steps {
  margin-top: 3.5rem;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
}

.step {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 1.75rem;
  padding: 2.25rem 2rem;
  border-bottom: 1px solid var(--border);
  align-items: start;
  transition: background 0.2s;
}

.step:last-child { border-bottom: none; }
.step:hover { background: rgba(59,130,246,0.04); }

.step-num {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 2rem;
  color: var(--border-solid);
  line-height: 1;
  padding-top: 0.2rem;
}

.step-content h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.45rem;
  letter-spacing: -0.01em;
}

.step-content p { font-size: 0.88rem; color: var(--muted); line-height: 1.7; }

.step-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: 0.7rem;
  background: var(--accent-glow);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

/* OVER MIJ */
.over { background: var(--dark); }

.over-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  margin-top: 3rem;
}

@media (max-width: 768px) { .over-grid { grid-template-columns: 1fr; gap: 3rem; } }

.over-heading {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  line-height: 1.15;
}

.over-text p {
  font-size: 0.97rem;
  color: var(--light);
  line-height: 1.8;
  margin-bottom: 1.2rem;
}

.over-text p strong { color: var(--white); font-weight: 500; }

.over-stats { display: flex; flex-direction: column; gap: 0.75rem; }

.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  transition: border-color 0.2s;
}

.stat:hover { border-color: rgba(59,130,246,0.3); }

.stat-num {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 2.25rem;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.03em;
}

.stat-label { font-size: 0.83rem; color: var(--muted); margin-top: 0.3rem; line-height: 1.5; }

/* CONTACT */
.contact { background: var(--black); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 5rem;
  margin-top: 3rem;
}

@media (max-width: 768px) { .contact-grid { grid-template-columns: 1fr; gap: 3rem; } }

.contact-intro h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1.2;
  margin-bottom: 1.2rem;
  letter-spacing: -0.025em;
}

.contact-intro p { font-size: 0.88rem; color: var(--muted); line-height: 1.75; margin-bottom: 0.85rem; }

.contact-detail {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.contact-detail a { color: var(--accent); text-decoration: none; }
.contact-detail a:hover { text-decoration: underline; }

/* FORM */
form { display: flex; flex-direction: column; gap: 0.85rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.85rem; }
@media (max-width: 500px) { .form-row { grid-template-columns: 1fr; } }

.form-group { display: flex; flex-direction: column; gap: 0.35rem; }

label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

input, textarea, select {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--white);
  font-family: 'Inter', sans-serif;
  font-size: 0.92rem;
  padding: 0.75rem 1rem;
  outline: none;
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
  -webkit-appearance: none;
}

input:focus, textarea:focus, select:focus {
  border-color: rgba(59,130,246,0.5);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.08);
}

input::placeholder, textarea::placeholder { color: var(--border-solid); }

textarea { resize: vertical; min-height: 120px; }
select option { background: var(--dark); }

.form-submit {
  background: var(--accent);
  color: #ffffff;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  padding: 0.9rem 1.8rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-transform: uppercase;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  align-self: flex-start;
}

.form-submit:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59,130,246,0.35);
}

.form-submit:disabled { opacity: 0.55; cursor: not-allowed; transform: none; box-shadow: none; }

.form-note { font-size: 0.75rem; color: var(--muted); margin-top: 0.15rem; }

.form-error {
  font-size: 0.83rem;
  color: #f07070;
  padding: 0.7rem 1rem;
  border: 1px solid rgba(240,112,112,0.3);
  border-radius: var(--radius-sm);
  background: rgba(240,112,112,0.06);
  display: none;
}

/* HONEYPOT */
.hp-field { display: none; }

/* SUCCESS STATE */
.form-success {
  display: none;
  padding: 2.5rem 2rem;
  border: 1px solid rgba(59,130,246,0.3);
  border-radius: var(--radius);
  background: var(--accent-glow);
  text-align: center;
}

.form-success h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--accent);
}

.form-success p { font-size: 0.88rem; color: var(--muted); }

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  letter-spacing: -0.02em;
}

.footer-logo .logo-erwin { color: var(--white); }
.footer-logo .logo-ai    { color: var(--accent); }
footer p { font-size: 0.78rem; color: var(--muted); }

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible { opacity: 1; transform: none; }

.accent-line {
  display: inline-block;
  width: 36px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
  margin-bottom: 1.5rem;
  opacity: 0.7;
}