/* Tesla-inspired Design System — Drone Inspectie */
:root {
  --blue: #3E6AE1;
  --blue-dark: #2d54c0;
  --carbon: #171A20;
  --graphite: #393C41;
  --pewter: #5C5E62;
  --fog: #8E8E8E;
  --white: #FFFFFF;
  --ash: #F4F4F4;
  --cloud: #EEEEEE;
  --pale: #D0D1D2;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --ease: 0.33s cubic-bezier(0.5, 0, 0, 1);
  --max-w: 1280px;
  --r-btn: 4px;
  --r-card: 12px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.43;
  color: var(--graphite);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  padding: 0 20px;
  height: 40px;
  border-radius: var(--r-btn);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--ease), border-color var(--ease), color var(--ease);
}
.btn-primary  { background: var(--blue);  color: var(--white);    border-color: var(--blue); }
.btn-primary:hover  { background: var(--blue-dark); border-color: var(--blue-dark); }
.btn-secondary { background: var(--white); color: var(--graphite); border-color: var(--cloud); }
.btn-secondary:hover { border-color: var(--pale); }
.btn-ghost { background: rgba(255,255,255,0.15); color: var(--white); border-color: rgba(255,255,255,0.5); }
.btn-ghost:hover { background: rgba(255,255,255,0.28); }
.btn-full { width: 100%; height: 48px; }

/* ── NAV ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease);
}
.nav.scrolled { border-bottom-color: var(--cloud); }
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--carbon);
  font-size: 15px;
  font-weight: 500;
  flex-shrink: 0;
}
.nav-logo img { width: 32px; height: 32px; }
.nav-links { display: flex; align-items: center; gap: 2px; flex: 1; }
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--carbon);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--r-btn);
  transition: background var(--ease);
}
.nav-links a:hover { background: var(--ash); }
.nav-cta { flex-shrink: 0; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--carbon); transition: transform var(--ease), opacity var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── HERO ── */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-img { position: absolute; inset: 0; width: 100%; height: 125%; top: -12%; object-fit: cover; object-position: center 60%; will-change: transform; }
.hero-overlay { position: absolute; inset: 0; background: rgba(23,26,32,0.42); }
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 720px; padding: 0 24px; color: var(--white); }
.hero-eyebrow { font-size: 11px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.75); margin-bottom: 20px; }
.hero-content h1 { font-size: 40px; font-weight: 500; line-height: 1.2; color: var(--white); margin-bottom: 16px; }
.hero-sub { font-size: 16px; line-height: 1.65; color: rgba(255,255,255,0.82); margin-bottom: 32px; }
.hero-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-scroll { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,0.55); animation: bounce 2s ease-in-out infinite; }
@keyframes bounce { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(7px); } }

/* ── CERTS ── */
.certs { padding: 36px 0; border-bottom: 1px solid var(--cloud); }
.certs-title { text-align: center; font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; color: var(--pewter); margin-bottom: 20px; }
.certs-row { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; }
.cert-item { display: flex; flex-direction: column; align-items: center; padding: 6px 20px; }
.cert-item strong { font-size: 13px; font-weight: 500; color: var(--carbon); }
.cert-item span   { font-size: 11px; color: var(--pewter); margin-top: 2px; }
.cert-divider     { width: 1px; height: 28px; background: var(--cloud); }

/* ── TRUSTED ── */
.trusted { padding: 24px 0; border-bottom: 1px solid var(--cloud); }
.trusted-inner { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }
.trusted-label { font-size: 12px; color: var(--pewter); white-space: nowrap; }
.trusted-logos { display: flex; gap: 24px; flex-wrap: wrap; }
.trusted-logos span { font-size: 11px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: var(--pale); }

/* ── SECTIONS ── */
.section      { padding: 96px 0; }
.section--ash { background: var(--ash); }
.section-head { text-align: center; max-width: 600px; margin: 0 auto 56px; }
.section-eyebrow { font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; color: var(--blue); margin-bottom: 10px; }
.section-head h2 { font-size: 32px; font-weight: 500; color: var(--carbon); line-height: 1.2; margin-bottom: 14px; }
.section-sub { font-size: 15px; color: var(--pewter); line-height: 1.65; }

/* ── DIENSTEN ── */
.diensten-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--cloud);
  border: 1px solid var(--cloud);
  border-radius: var(--r-card);
  overflow: hidden;
}
.dienst-card { background: var(--white); padding: 32px; transition: background var(--ease); }
.dienst-card:hover { background: #fafafa; }
.dienst-icon { width: 36px; height: 36px; color: var(--blue); margin-bottom: 14px; }
.dienst-icon svg { width: 100%; height: 100%; }
.dienst-card h3 { font-size: 15px; font-weight: 500; color: var(--carbon); margin-bottom: 8px; }
.dienst-card p  { font-size: 13px; color: var(--pewter); line-height: 1.6; }

/* ── PORTFOLIO ── */
.portfolio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.portfolio-card { border: 1px solid var(--cloud); border-radius: var(--r-card); overflow: hidden; transition: border-color var(--ease); }
.portfolio-card:hover { border-color: var(--pale); }
.portfolio-visual { position: relative; aspect-ratio: 4/3; background: var(--ash); overflow: hidden; }
.portfolio-visual svg { width: 100%; height: 100%; }
.portfolio-tag {
  position: absolute;
  top: 12px; left: 12px;
  font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em;
  background: var(--white); color: var(--graphite);
  padding: 4px 10px; border-radius: 2px;
}
.portfolio-body { padding: 20px; }
.portfolio-body h4 { font-size: 14px; font-weight: 500; color: var(--carbon); margin-bottom: 6px; }
.portfolio-body p  { font-size: 13px; color: var(--pewter); line-height: 1.55; }
.portfolio-cta { text-align: center; margin-top: 40px; }

/* ── REVIEWS ── */
.stats-row { display: flex; justify-content: center; gap: 48px; margin-bottom: 48px; padding-bottom: 40px; border-bottom: 1px solid var(--cloud); flex-wrap: wrap; }
.stat { text-align: center; }
.stat strong { display: block; font-size: 32px; font-weight: 500; color: var(--carbon); line-height: 1; }
.stat .stars { color: #E8A020; font-size: 13px; margin: 4px 0; }
.stat span   { font-size: 12px; color: var(--pewter); }
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.review-card {
  background: var(--white);
  border: 1px solid var(--cloud);
  border-radius: var(--r-card);
  padding: 24px;
  display: flex;
  flex-direction: column;
}
.review-card.featured { background: var(--carbon); border-color: var(--carbon); }
.review-card .stars { color: #E8A020; font-size: 14px; margin-bottom: 12px; }
.review-card > p { font-size: 14px; line-height: 1.65; color: var(--graphite); flex: 1; margin-bottom: 20px; }
.review-card.featured > p { color: rgba(255,255,255,0.82); }
.review-card footer { display: flex; align-items: center; gap: 12px; background: none; border: none; padding: 0; }
.review-card footer strong { display: block; font-size: 13px; font-weight: 500; color: var(--carbon); }
.review-card footer span   { font-size: 12px; color: var(--pewter); }
.review-card.featured footer strong { color: var(--white); }
.review-card.featured footer span   { color: rgba(255,255,255,0.55); }
.avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--blue); color: var(--white); font-size: 11px; font-weight: 600; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.review-platforms { text-align: center; margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--cloud); }
.review-platforms > p { font-size: 11px; color: var(--pewter); text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 12px; }
.review-platforms div { display: flex; justify-content: center; gap: 32px; flex-wrap: wrap; }
.review-platforms span { font-size: 14px; font-weight: 500; color: var(--graphite); }

/* ── WERKWIJZE ── */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.step { text-align: center; padding: 32px 20px; border: 1px solid var(--cloud); border-radius: var(--r-card); background: var(--white); }
.step-num { font-size: 28px; font-weight: 500; color: var(--blue); margin-bottom: 14px; }
.step h4 { font-size: 15px; font-weight: 500; color: var(--carbon); margin-bottom: 8px; }
.step p  { font-size: 13px; color: var(--pewter); line-height: 1.6; }

/* ── OVER ── */
.over-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: center; }
.over-num { font-size: 56px; font-weight: 500; color: var(--carbon); line-height: 1; margin-bottom: 8px; }
.over-stat > p { font-size: 14px; color: var(--pewter); margin-bottom: 32px; }
.over-usps { display: flex; flex-direction: column; gap: 12px; }
.usp { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--graphite); }
.usp svg { width: 16px; height: 16px; color: var(--blue); flex-shrink: 0; }
.over-text h2 { font-size: 32px; font-weight: 500; color: var(--carbon); margin-bottom: 16px; line-height: 1.2; }
.over-text p  { font-size: 15px; color: var(--graphite); line-height: 1.7; margin-bottom: 14px; }
.over-text .section-eyebrow { display: block; margin-bottom: 10px; }
.over-text .btn { margin-top: 8px; }

/* ── PRICING ── */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: start; }
.pricing-card { border: 1px solid var(--cloud); border-radius: var(--r-card); padding: 32px; }
.pricing-card--featured { background: var(--carbon); border-color: var(--carbon); }
.pricing-popular { font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.07em; color: rgba(255,255,255,0.55); margin-bottom: 10px; }
.pricing-card h3 { font-size: 20px; font-weight: 500; color: var(--carbon); margin-bottom: 4px; }
.pricing-card--featured h3 { color: var(--white); }
.pricing-sub { font-size: 13px; color: var(--pewter); margin-bottom: 20px; }
.pricing-card--featured .pricing-sub { color: rgba(255,255,255,0.55); }
.pricing-price { font-size: 32px; font-weight: 500; color: var(--carbon); margin-bottom: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--cloud); }
.pricing-card--featured .pricing-price { color: var(--white); border-bottom-color: rgba(255,255,255,0.1); }
.pricing-price small { font-size: 13px; font-weight: 400; color: var(--pewter); }
.pricing-card--featured .pricing-price small { color: rgba(255,255,255,0.5); }
.pricing-card ul { list-style: none; margin-bottom: 24px; }
.pricing-card li { font-size: 13px; color: var(--graphite); padding: 8px 0; border-bottom: 1px solid var(--cloud); display: flex; align-items: center; gap: 8px; }
.pricing-card li::before { content: '✓'; color: var(--blue); font-weight: 600; }
.pricing-card--featured li { color: rgba(255,255,255,0.8); border-bottom-color: rgba(255,255,255,0.1); }
.pricing-card--featured li::before { color: rgba(255,255,255,0.6); }

/* ── CTA BANNER ── */
.cta-section { padding: 64px 0; background: var(--ash); border-top: 1px solid var(--cloud); border-bottom: 1px solid var(--cloud); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-inner h2 { font-size: 24px; font-weight: 500; color: var(--carbon); margin-bottom: 4px; }
.cta-inner p  { font-size: 14px; color: var(--pewter); }

/* ── CONTACT ── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 64px; align-items: start; }
.contact-info h3  { font-size: 20px; font-weight: 500; color: var(--carbon); margin-bottom: 6px; }
.contact-info > p { font-size: 14px; color: var(--pewter); margin-bottom: 20px; }
.contact-item { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--cloud); }
.contact-item svg    { width: 18px; height: 18px; color: var(--blue); flex-shrink: 0; margin-top: 2px; }
.contact-item strong { display: block; font-size: 11px; font-weight: 500; color: var(--carbon); margin-bottom: 2px; text-transform: uppercase; letter-spacing: 0.05em; }
.contact-item a,
.contact-item span   { font-size: 14px; color: var(--pewter); text-decoration: none; line-height: 1.5; }
.contact-item a:hover { color: var(--blue); }

/* ── FORM ── */
#contactForm { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
label { font-size: 11px; font-weight: 500; color: var(--carbon); text-transform: uppercase; letter-spacing: 0.05em; }
input, select, textarea { font-family: var(--font); font-size: 14px; color: var(--carbon); background: var(--white); border: 1px solid var(--cloud); border-radius: var(--r-btn); padding: 10px 12px; outline: none; width: 100%; transition: border-color var(--ease); }
input:focus, select:focus, textarea:focus { border-color: var(--blue); }
input::placeholder, textarea::placeholder { color: var(--fog); }
textarea { resize: vertical; min-height: 120px; }
.form-success { display: none; padding: 14px; background: #f0f7f0; border: 1px solid #c3e6c3; border-radius: var(--r-btn); font-size: 14px; color: #2d6a2d; text-align: center; }
.form-error   { display: none; padding: 14px; background: #fdf0f0; border: 1px solid #f5c6c6; border-radius: var(--r-btn); font-size: 14px; color: #a32020; text-align: center; }
.form-error a { color: #a32020; }

/* ── FOOTER ── */
.footer { background: var(--carbon); color: rgba(255,255,255,0.55); }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding: 64px 24px 48px; max-width: var(--max-w); margin: 0 auto; }
.footer-brand { max-width: 280px; }
.footer-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--white); font-size: 15px; font-weight: 500; margin-bottom: 14px; }
.footer-logo img { width: 36px; height: 36px; border-radius: 8px; }
.footer-brand p { font-size: 13px; line-height: 1.7; margin-bottom: 16px; }
.footer-social { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-social a { display: flex; align-items: center; gap: 7px; font-size: 13px; color: rgba(255,255,255,0.55); text-decoration: none; transition: color var(--ease); }
.footer-social a:hover { color: var(--white); }
.footer h4 { font-size: 11px; font-weight: 500; color: var(--white); text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 16px; }
.footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer li { font-size: 13px; line-height: 1.5; }
.footer a { color: rgba(255,255,255,0.55); text-decoration: none; transition: color var(--ease); }
.footer a:hover { color: var(--white); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; max-width: var(--max-w); margin: 0 auto; padding: 20px 24px; font-size: 12px; color: rgba(255,255,255,0.35); }
.footer-bottom a { color: rgba(255,255,255,0.35); text-decoration: none; margin-left: 16px; }
.footer-bottom a:hover { color: rgba(255,255,255,0.7); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .diensten-grid  { grid-template-columns: repeat(2, 1fr); }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid   { grid-template-columns: repeat(2, 1fr); }
  .footer-inner   { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-cta   { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 60px; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--cloud); padding: 16px 24px 20px; gap: 4px; }

  .hero-content h1 { font-size: 28px; }
  .hero-btns { flex-direction: column; align-items: center; }
  .certs-row { flex-direction: column; align-items: center; }
  .cert-divider { width: 40px; height: 1px; }
  .trusted-inner { flex-direction: column; align-items: flex-start; }
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 24px; }
  .section-head { margin-bottom: 40px; }
  .diensten-grid  { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .reviews-grid   { grid-template-columns: 1fr; }
  .steps-grid     { grid-template-columns: repeat(2, 1fr); }
  .over-grid      { grid-template-columns: 1fr; gap: 40px; }
  .pricing-grid   { grid-template-columns: 1fr; }
  .contact-grid   { grid-template-columns: 1fr; gap: 40px; }
  .form-row       { grid-template-columns: 1fr; }
  .footer-inner   { grid-template-columns: 1fr 1fr; gap: 32px; padding: 48px 24px 32px; }
  .cta-inner      { flex-direction: column; text-align: center; }
  .stats-row      { gap: 24px; }
}

@media (max-width: 480px) {
  .steps-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .over-num { font-size: 40px; }
}