/* =========================================================================
   MARK BAX — DOMOTICA · AUTOMATISERING · INNOVATIE
   Built to MarkBax_DesignSystem_v1 (see /design in the source repo):
   - 03_Color_System, 04_Typography, 05_Grid_Layout, 06_Spacing_System
   - 07_Navigation, 08_Hero, 09_Buttons, 10_Cards, 11_Project_Cards
   - 14_Backgrounds, 15_Animations, 16_Responsive, 17_Accessibility
   Sections: 1. Variables  2. Reset  3. Layout helpers  4. Background
   5. Header/Nav  6. Hero  7. Feature cards  8. Projects  9. Contact strip
   10. Footer  11. Animations  12. Responsive
   ========================================================================= */

/* ---------- 1. CSS VARIABLES (03_Color_System, 06_Spacing_System) ---------- */
:root{
  /* Color system — verbatim from 03_Color_System.md */
  --bg:          #070C14;
  --surface:     #0F1724;
  --card:        #101A27;
  --accent:      #1CC8FF;
  --accent-dark: #0E73FF;
  --text:        #FFFFFF;
  --muted:       #9FB3C8;

  /* Derived tones (not in spec, kept minimal for hairlines/overlays only) */
  --border-subtle: rgba(159,179,200,0.14);
  --border-glow:   rgba(28,200,255,0.4);
  --card-glass: linear-gradient(180deg, rgba(16,26,39,0.72) 0%, rgba(15,23,36,0.55) 100%);

  --grad-accent: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  --grad-text:   linear-gradient(90deg, var(--accent) 0%, var(--accent-dark) 100%);

  /* Spacing system — 06_Spacing_System.md: 4,8,12,16,24,32,40,48,64,80,120 */
  --sp-4: 4px; --sp-8: 8px; --sp-12: 12px; --sp-16: 16px; --sp-24: 24px;
  --sp-32: 32px; --sp-40: 40px; --sp-48: 48px; --sp-64: 64px; --sp-80: 80px;
  --sp-120: 120px;

  /* Radii */
  --radius-btn: 16px;   /* 09_Buttons.md */
  --radius-card: 22px;  /* 10_Cards.md */
  --radius-sm: 10px;
  --radius-pill: 999px;

  --shadow-glow-sm: 0 0 20px rgba(28,200,255,0.28);
  --shadow-glow-md: 0 0 44px rgba(28,200,255,0.32);
  --shadow-card: 0 10px 30px rgba(0,0,0,0.4);

  /* Typography — 04_Typography.md: Inter, H1 72/800, H2 48/700, Body 20/400 */
  --font-display: 'Inter', sans-serif;
  --fs-h1: 72px; --fw-h1: 800;
  --fs-h2: 48px; --fw-h2: 700;
  --fs-body: 20px; --fw-body: 400;

  /* Grid — 05_Grid_Layout.md: 1440px canvas, 1320px container, 12 columns */
  --canvas-w: 1440px;
  --container-w: 1320px;

  /* Navigation — 07_Navigation.md: 90px, sticky, blur, transparent */
  --header-h: 90px;

  /* Hero — 08_Hero.md: 920px */
  --hero-h: 920px;
}

/* ---------- 2. RESET ---------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  font-weight: var(--fw-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style: none; margin: 0; padding: 0; }
button{ font-family: inherit; cursor: pointer; }
h1,h2,h3,h4{ margin: 0; font-family: var(--font-display); }
p{ margin: 0; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

/* Visible keyboard focus — 17_Accessibility.md (WCAG AA) */
a:focus-visible, button:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
:root{ accent-color: var(--accent); }

/* ---------- 3. LAYOUT HELPERS (05_Grid_Layout.md) ---------- */
.container{
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--sp-40);
}

/* ---------- 4. CIRCUIT BACKGROUND (14_Backgrounds.md) ---------- */
.circuit-bg{
  position: fixed;
  inset: 0;
  z-index: -2;
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(28,200,255,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28,200,255,0.1) 1px, transparent 1px),
    linear-gradient(rgba(28,200,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28,200,255,0.045) 1px, transparent 1px),
    radial-gradient(circle at 82% 18%, rgba(14,115,255,0.3) 0%, transparent 46%),
    radial-gradient(circle at 12% 78%, rgba(28,200,255,0.18) 0%, transparent 42%),
    radial-gradient(circle at 50% 45%, rgba(28,200,255,0.08) 0%, transparent 60%);
  background-size: 84px 84px, 84px 84px, 21px 21px, 21px 21px, 100% 100%, 100% 100%, 100% 100%;
  background-position: center;
}
.circuit-bg::after{
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 50% 0%, rgba(28,200,255,0.1), transparent 55%);
}

/* ---------- 5. HEADER / NAV (07_Navigation.md: 90px, sticky, blur, transparent) ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(7,12,20,0.6);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--border-subtle);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-24);
}

.brand{
  display: flex;
  align-items: center;
  gap: var(--sp-12);
  flex-shrink: 0;
}
.brand-icon{
  width: 40px;
  height: 40px;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(28,200,255,0.4));
}
.brand-text{
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.brand-mark{ color: var(--text); }
.brand-accent{ color: var(--accent); }

.main-nav ul{
  display: flex;
  gap: var(--sp-32);
}
.nav-link{
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding: var(--sp-8) 2px;
  position: relative;
  transition: color 0.25s ease;
}
.nav-link::after{
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--grad-text);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
  box-shadow: 0 0 8px rgba(28,200,255,0.7);
}
.nav-link:hover{ color: var(--text); }
.nav-link:hover::after{ transform: scaleX(1); }
.nav-link.active{ color: var(--accent); }
.nav-link.active::after{ transform: scaleX(1); }

.header-socials{
  display: flex;
  align-items: center;
  gap: var(--sp-12);
  flex-shrink: 0;
}
.social-btn{
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text);
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.social-btn svg{ width: 17px; height: 17px; }
.social-btn:hover{
  transform: translateY(-2px);
  background: rgba(255,255,255,0.1);
}
.social-btn-primary{
  background: var(--grad-accent);
  border: none;
  box-shadow: var(--shadow-glow-sm);
}
.social-btn-primary:hover{
  box-shadow: 0 0 26px rgba(28,200,255,0.55);
}

.nav-toggle{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}
.nav-toggle span{
  display: block;
  height: 2px;
  margin: 0 8px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s 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); }

/* ---------- 6. HERO (08_Hero.md: 920px, links tekst, rechts logo, circuit bg) ---------- */
.hero{
  min-height: var(--hero-h);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--sp-40);
  position: relative;
  overflow: hidden;
}
.hero-inner{
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: var(--sp-40);
  padding-bottom: var(--sp-80);
}

.eyebrow{
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: var(--sp-16);
}
.eyebrow .dot{ color: var(--muted); margin: 0 4px; }
.eyebrow.small{ margin-bottom: var(--sp-8); }

.hero-title{
  font-size: var(--fs-h1);
  font-weight: var(--fw-h1);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--text);
  margin-bottom: var(--sp-24);
}
.text-accent{
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc{
  max-width: 560px;
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  color: var(--muted);
  margin-bottom: var(--sp-40);
}

.hero-actions{ display: flex; gap: var(--sp-16); flex-wrap: wrap; }

/* ---------- Buttons (09_Buttons.md: 56px hoog, radius 16px, glow) ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-8);
  height: 56px;
  padding: 0 var(--sp-32);
  border-radius: var(--radius-btn);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.btn-icon{ width: 16px; height: 16px; flex-shrink: 0; }
.btn-primary{
  background: var(--grad-accent);
  color: #04121c;
  box-shadow: var(--shadow-glow-sm);
}
.btn-primary:hover{
  transform: translateY(-2px);
  box-shadow: 0 6px 32px rgba(28,200,255,0.5);
}
.btn-outline{
  background: rgba(255,255,255,0.03);
  color: var(--text);
  border-color: rgba(255,255,255,0.18);
}
.btn-outline:hover{
  transform: translateY(-2px);
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.32);
}

/* Hero visual / logo showcase */
.hero-visual{
  position: relative;
  display: grid;
  place-items: center;
  min-height: 440px;
}
.glow-ring{
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(28,200,255,0.4) 0%, rgba(14,115,255,0.16) 45%, transparent 72%);
  filter: blur(10px);
  animation: pulseGlow 4.5s ease-in-out infinite;
}
.hero-logo{
  position: relative;
  width: min(78%, 400px);
  z-index: 2;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.6)) drop-shadow(0 0 26px rgba(28,200,255,0.4));
  animation: floatLogo 6s ease-in-out infinite;
}
.podium{
  position: absolute;
  bottom: 18px;
  width: 320px;
  height: 46px;
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(28,200,255,0.55) 0%, rgba(28,200,255,0.12) 55%, transparent 75%);
  filter: blur(2px);
  animation: pulseDisc 4.5s ease-in-out infinite;
}
.podium::before{
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border-top: 2px solid rgba(28,200,255,0.6);
  box-shadow: 0 0 24px 4px rgba(28,200,255,0.5);
}

/* ---------- 7. FEATURE CARDS (10_Cards.md: radius 22, glass, hover lift) ---------- */
.feature-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-24);
  margin-top: var(--sp-8);
}
.feature-card{
  background: var(--card-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: var(--sp-32) var(--sp-24);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  opacity: 0;
  transform: translateY(24px);
}
.feature-card.is-visible{ opacity: 1; transform: translateY(0); }
.feature-card:hover{
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-sm);
}
.feature-icon{
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  background: rgba(28,200,255,0.14);
  color: var(--accent);
  margin-bottom: var(--sp-16);
}
.feature-icon svg{ width: 22px; height: 22px; }
.feature-card h3{
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--sp-12);
}
.feature-card p{
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  color: var(--muted);
  margin-bottom: var(--sp-16);
}
.feature-link{
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}
.feature-link:hover{ gap: 10px; }

/* ---------- 8. PROJECTS (11_Project_Cards.md: image + title + tekst + CTA) ---------- */
.projects{
  padding: var(--sp-120) 0 var(--sp-120);
  background: linear-gradient(180deg, rgba(15,23,36,0.5) 0%, rgba(7,12,20,0) 100%);
  border-top: 1px solid var(--border-subtle);
}
.projects-head{
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--sp-40);
  flex-wrap: wrap;
  gap: var(--sp-16);
}
.section-title{
  font-size: var(--fs-h2);
  font-weight: var(--fw-h2);
  color: var(--text);
}
.link-arrow{
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-8);
  transition: gap 0.2s ease;
}
.link-arrow:hover{ gap: 12px; }

.projects-track-wrap{ position: relative; }
.scroll-fade{
  display: none;
  position: absolute;
  top: 0;
  right: 0;
  bottom: var(--sp-4);
  width: 56px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent 0%, var(--bg) 100%);
  z-index: 2;
  transition: opacity 0.25s ease;
}
.swipe-hint{
  display: none;
  align-items: center;
  justify-content: center;
  gap: var(--sp-8);
  margin-top: var(--sp-24);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  opacity: 1;
  transition: opacity 0.4s ease;
}
.swipe-hint svg{ width: 16px; height: 16px; animation: swipeNudge 1.8s ease-in-out infinite; }
.swipe-hint.is-hidden{ opacity: 0; }
.projects-track{
  display: flex;
  gap: var(--sp-24);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding-bottom: var(--sp-4);
  scrollbar-width: none;
}
.projects-track::-webkit-scrollbar{ display: none; }
.project-card{
  flex: 1 1 calc(25% - 18px);
  min-width: 260px;
  scroll-snap-align: start;
  background: var(--card-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  opacity: 0;
  transform: translateY(24px);
}
.project-card.is-visible{ opacity: 1; transform: translateY(0); }
.project-card:hover{
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-card), var(--shadow-glow-sm);
}
.project-media{
  position: relative;
  height: 150px;
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border-subtle);
}
.project-media--dashboard{ background: url('../assets/thumb-dashboard.jpg') center/cover no-repeat, linear-gradient(135deg,#0e2a3a,#0a1420); }
.project-media--esp{ background: url('../assets/thumb-esp.jpg') center/cover no-repeat, linear-gradient(135deg,#12261a,#0a1420); }
.project-media--energy{ background: url('../assets/thumb-energy.jpg') center/cover no-repeat, linear-gradient(135deg,#0a1420,#0d1f18); }
.project-media--network{ background: url('../assets/thumb-network.jpg') center/cover no-repeat, linear-gradient(135deg,#191029,#0a1420); }
.project-media--alarm{ background: url('../assets/thumb-alarm.jpg') center/cover no-repeat, linear-gradient(135deg,#1a1030,#0a1420); }

.project-body{ padding: var(--sp-24) var(--sp-24) var(--sp-24); }
.project-body h3{
  font-size: 1.04rem;
  font-weight: 700;
  margin-bottom: var(--sp-8);
}
.project-body p{
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  color: var(--muted);
  margin-bottom: var(--sp-16);
}
.project-cta{
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}
.project-cta:hover{ gap: 10px; }

.track-nav{
  position: absolute;
  top: 50%;
  right: -20px;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text);
  display: grid;
  place-items: center;
  transition: background 0.2s ease, transform 0.2s ease;
}
.track-nav svg{ width: 18px; height: 18px; }
.track-nav:hover{ background: rgba(28,200,255,0.2); transform: translateY(-50%) scale(1.06); }

/* ---------- 8b. ABOUT (Over mij) ---------- */
.about{
  padding: var(--sp-120) 0;
  border-top: 1px solid var(--border-subtle);
}
.about-inner{
  display: grid;
  grid-template-columns: 1.3fr 0.85fr;
  gap: var(--sp-64);
  align-items: start;
}
.about-copy p{
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  color: var(--muted);
  margin-top: var(--sp-24);
}
.about-values{
  background: var(--card-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: var(--sp-40);
}
.about-values h3{
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--sp-24);
}
.value-list{
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
}
.value-item{
  display: flex;
  align-items: center;
  gap: var(--sp-12);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
}
.value-check{
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  background: rgba(28,200,255,0.14);
  color: var(--accent);
}
.value-check svg{ width: 15px; height: 15px; }

/* ---------- 8c. BLOG ---------- */
.blog{
  padding: var(--sp-120) 0;
  border-top: 1px solid var(--border-subtle);
  background: linear-gradient(180deg, rgba(15,23,36,0.35) 0%, rgba(7,12,20,0) 100%);
}
.blog-intro{
  max-width: 720px;
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  color: var(--muted);
  margin-top: var(--sp-24);
}
.blog-list{
  display: flex;
  flex-direction: column;
  margin-top: var(--sp-48);
}
.blog-item{
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--sp-24);
  padding: var(--sp-24) 0;
  border-bottom: 1px solid var(--border-subtle);
}
.blog-item:first-child{ padding-top: 0; }
.blog-item:last-child{ border-bottom: none; }
.blog-item-body h3{
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--sp-8);
  transition: color 0.2s ease;
}
.blog-item-body p{
  font-size: 0.95rem;
  color: var(--muted);
  max-width: 640px;
}
.blog-item-arrow{
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  margin-top: 4px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
  color: var(--muted);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.blog-item-arrow svg{ width: 16px; height: 16px; }
.blog-item:hover .blog-item-arrow{
  background: var(--grad-accent);
  border-color: transparent;
  color: #04121c;
  transform: translateX(4px);
}
.blog-item:hover .blog-item-body h3{ color: var(--accent); }
.blog-more{
  margin-top: var(--sp-40);
  display: flex;
  justify-content: flex-end;
}

/* ---------- 8d. TECHNOLOGIE ---------- */
.tech{
  padding: var(--sp-120) 0;
  border-top: 1px solid var(--border-subtle);
}
.tech-intro{
  max-width: 720px;
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  color: var(--muted);
  margin-top: var(--sp-24);
  margin-bottom: var(--sp-48);
}
.tech-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-24);
}
.tech-card{
  background: var(--card-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: var(--sp-32);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.tech-card:hover{
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-sm);
}
.tech-card h3{
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--sp-16);
}
.chip-list{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-8);
}
.chip{
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(28,200,255,0.1);
  border: 1px solid var(--border-subtle);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
}
.tech-outro{
  max-width: 720px;
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  color: var(--muted);
  margin-top: var(--sp-48);
}

/* ---------- 9. CONTACT STRIP ---------- */
.contact-strip{
  border-top: 1px solid var(--border-subtle);
  background: rgba(15,23,36,0.6);
  padding: var(--sp-32) 0;
}
.contact-strip-inner{
  display: grid;
  grid-template-columns: repeat(3, auto) 1fr;
  align-items: center;
  gap: var(--sp-40);
}
.contact-item{ display: flex; align-items: center; gap: var(--sp-16); }
.contact-icon{
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  background: rgba(28,200,255,0.14);
  color: var(--accent);
}
.contact-icon svg{ width: 20px; height: 20px; }
.contact-label{
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 3px;
}
.contact-value{
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}
.contact-value--link{ color: var(--accent); }
.btn-contact{ justify-self: end; white-space: nowrap; }

/* ---------- 9b. TOPIC PAGES ("Lees meer" detail pages) ---------- */
.topic-hero{
  padding-top: var(--sp-64);
  padding-bottom: var(--sp-32);
  min-height: 460px;
  display: flex;
  align-items: center;
  position: relative;
}
.breadcrumb{
  display: inline-flex;
  align-items: center;
  gap: var(--sp-8);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: var(--sp-40);
  transition: color 0.2s ease, gap 0.2s ease;
}
.breadcrumb svg{ width: 16px; height: 16px; transition: transform 0.2s ease; }
.breadcrumb:hover{ color: var(--accent); gap: var(--sp-12); }
.breadcrumb:hover svg{ transform: translateX(-3px); }

.topic-icon-wrap{
  position: relative;
  width: 88px;
  height: 88px;
  margin-bottom: var(--sp-32);
}
.topic-icon-glow{
  position: absolute;
  inset: -22px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(28,200,255,0.35) 0%, rgba(14,115,255,0.12) 45%, transparent 72%);
  filter: blur(8px);
  animation: pulseGlow 4.5s ease-in-out infinite;
}
.topic-icon{
  position: relative;
  width: 88px;
  height: 88px;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  background: rgba(28,200,255,0.14);
  border: 1px solid var(--border-subtle);
  color: var(--accent);
}
.topic-icon svg{ width: 38px; height: 38px; }

.topic-title{
  font-size: var(--fs-h1);
  font-weight: var(--fw-h1);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin-bottom: var(--sp-24);
}
.topic-intro{
  max-width: 640px;
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  color: var(--muted);
}

.coming-soon{
  margin-top: var(--sp-64);
  margin-bottom: var(--sp-80);
  background: var(--card-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: var(--sp-48);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-16);
  max-width: 720px;
}
.coming-soon-badge{
  display: inline-flex;
  align-items: center;
  gap: var(--sp-8);
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  background: rgba(28,200,255,0.12);
  border: 1px solid var(--border-glow);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.coming-soon-dots{ display: inline-flex; gap: 4px; margin-left: 2px; }
.coming-soon-dot{
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  animation: dotPulse 1.4s ease-in-out infinite;
}
.coming-soon-dot:nth-child(2){ animation-delay: 0.2s; }
.coming-soon-dot:nth-child(3){ animation-delay: 0.4s; }
.coming-soon h2{
  font-size: var(--fs-h2);
  font-weight: var(--fw-h2);
}
.coming-soon p{
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  color: var(--muted);
}
.coming-soon-actions{
  display: flex;
  gap: var(--sp-16);
  flex-wrap: wrap;
  margin-top: var(--sp-8);
}

/* ---------- 10. FOOTER ---------- */
.site-footer{
  padding: var(--sp-24) 0 var(--sp-40);
  text-align: center;
}
.site-footer p{
  font-size: 0.85rem;
  color: var(--muted);
}

/* ---------- 11. ANIMATIONS (15_Animations.md: float, glow, reveal, counters) ---------- */
@keyframes floatLogo{
  0%, 100%{ transform: translateY(0); }
  50%{ transform: translateY(-14px); }
}
@keyframes pulseGlow{
  0%, 100%{ opacity: 0.75; transform: scale(1); }
  50%{ opacity: 1; transform: scale(1.06); }
}
@keyframes pulseDisc{
  0%, 100%{ opacity: 0.55; transform: scale(0.92); }
  50%{ opacity: 1; transform: scale(1.08); }
}
@keyframes dotPulse{
  0%, 100%{ opacity: 0.3; transform: scale(0.85); }
  50%{ opacity: 1; transform: scale(1.15); }
}
@keyframes swipeNudge{
  0%, 100%{ transform: translateX(0); }
  50%{ transform: translateX(5px); }
}
/* Scroll reveal is toggled via .is-visible (see js/script.js) */
.counted{ font-variant-numeric: tabular-nums; }

/* ---------- 12. RESPONSIVE (16_Responsive.md: desktop / tablet / mobiel) ---------- */
@media (max-width: 1400px){
  :root{ --container-w: 1140px; }
}

@media (max-width: 1100px){
  :root{ --container-w: 920px; --hero-h: auto; }
  .hero-title{ font-size: 56px; }
  .section-title{ font-size: 36px; }
  .topic-title{ font-size: 56px; }
  .feature-grid{ grid-template-columns: repeat(2, 1fr); }
  .project-card{ flex: 1 1 calc(50% - 12px); }
  .about-inner{ grid-template-columns: 1fr; gap: var(--sp-40); }
  .tech-grid{ grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px){
  .main-nav{
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(7,12,20,0.98);
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
  }
  .main-nav.open{
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .main-nav ul{
    flex-direction: column;
    padding: var(--sp-24) var(--sp-32) var(--sp-32);
    gap: var(--sp-16);
  }
  .header-socials{ display: none; }
  .nav-toggle{ display: flex; }

  .hero-inner{
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: var(--sp-24);
  }
  .hero-desc{ margin-left: auto; margin-right: auto; }
  .hero-actions{ justify-content: center; }
  .hero-visual{ order: -1; min-height: 320px; }
  .hero-logo{ width: 62%; }
}

@media (max-width: 720px){
  .container{ padding: 0 var(--sp-24); }
  .hero-title{ font-size: 40px; }
  .section-title{ font-size: 30px; }
  .topic-title{ font-size: 40px; }
  .coming-soon{ padding: var(--sp-32) var(--sp-24); }
  .feature-grid{ grid-template-columns: 1fr; }
  .project-card{ flex: 1 1 80%; }
  .projects-head{ flex-direction: column; align-items: flex-start; }
  .contact-strip-inner{
    grid-template-columns: 1fr;
    gap: var(--sp-24);
  }
  .btn-contact{ justify-self: start; width: 100%; justify-content: center; }
  .track-nav{ display: none; }
  .scroll-fade{ display: block; }
  .swipe-hint{ display: inline-flex; }
  .tech-grid{ grid-template-columns: 1fr; }
  .about-values{ padding: var(--sp-32) var(--sp-24); }
  .blog-item{ flex-direction: column; gap: var(--sp-12); }
  .blog-item-arrow{ display: none; }
}