/* ── sectie: Introductie (#31) ── */
:root {
  --bg: #0c0b0a;
  --surface: #171512;
  --surface2: #241b13;
  --accent: #ff8c00;
  --accent-hover: #ffab42;
  --text: #f7f5f2;
  --muted: #bdb4aa;
  --border: #3b2c20;
  --radius: 17px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 25px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.8;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

.dt-container {
  max-width: 1240px;
  width: calc(100% - 40px);
  margin: 0 auto;
}

/* HERO */

.dt-hero {
  padding: 95px 0;
  background: #15100c;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.dt-hero::after {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  border: 1px solid rgba(255, 140, 0, .22);
  border-radius: 50%;
  right: -130px;
  top: -190px;
  pointer-events: none;
}

.dt-hero-content {
  position: relative;
  z-index: 1;
}

.dt-eyebrow {
  color: var(--accent);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 800;
}

.dt-hero h1 {
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.1;
  letter-spacing: -2px;
  margin: 18px 0 25px;
  font-weight: 900;
}

.dt-hero h1 span {
  color: var(--accent);
}

.dt-hero p {
  max-width: 760px;
  font-size: 16px;
  color: var(--muted);
  margin: 0;
}

.dt-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.dt-tag {
  padding: 8px 15px;
  border-radius: 50px;
  background: #302013;
  border: 1px solid #68401b;
  color: #ffbc70;
  font-size: 12px;
  font-weight: 700;
}

/* MAIN LAYOUT */

.dt-main {
  padding: 65px 0 100px;
}

.dt-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 38px;
  align-items: start;
}

/* SIDEBAR */

.dt-sidebar {
  position: sticky;
  top: 20px;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 15px;
  scrollbar-width: thin;
  scrollbar-color: #85501c transparent;
}

.dt-sidebar-title {
  font-size: 12px;
  font-weight: 800;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 0 12px 15px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.dt-sidebar a {
  display: block;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 12.5px;
  color: #b7aaa0;
  line-height: 1.5;
  transition: background .2s, color .2s;
}

.dt-sidebar a:hover,
.dt-sidebar a.active {
  background: #392413;
  color: var(--accent);
}

/* INTRO */

.dt-intro {
  padding: 28px 32px;
  border-radius: 14px;
  background: #241a11;
  border: 1px solid #70461e;
  border-left: 4px solid var(--accent);
  margin-bottom: 28px;
}

.dt-intro h2 {
  margin: 0 0 8px;
  font-size: 19px;
  color: var(--accent);
}

.dt-intro p {
  margin: 0;
  font-size: 14px;
  color: #d1c3b5;
}

/* SECTIONS */

.dt-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 35px 38px;
  margin-bottom: 18px;
  scroll-margin-top: 25px;
}

.dt-section-heading {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

.dt-num {
  width: 42px;
  height: 42px;
  min-width: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #3a2513;
  border: 1px solid #75471c;
  border-radius: 11px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 900;
}

.dt-section h2 {
  margin: 3px 0 0;
  font-size: 24px;
  line-height: 1.35;
  letter-spacing: -.5px;
}

.dt-section p {
  color: #c5b9ad;
  font-size: 14px;
  line-height: 1.95;
  margin: 0 0 16px;
}

.dt-section p:last-child {
  margin-bottom: 0;
}

.dt-section strong {
  color: #fff8f0;
}

.dt-section ul {
  list-style: none;
  padding: 0;
  margin: 12px 0 20px;
}

.dt-section li {
  position: relative;
  padding: 5px 0 5px 25px;
  color: #c5b9ad;
  font-size: 14px;
  line-height: 1.8;
}

.dt-section li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 17px;
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 2px;
}

/* CONTACT */

.dt-contact {
  margin-top: 35px;
  padding: 45px 30px;
  text-align: center;
  background: #291c11;
  border: 1px solid #795023;
  border-radius: 20px;
}

.dt-contact h2 {
  margin: 0 0 12px;
  font-size: 30px;
}

.dt-contact p {
  max-width: 540px;
  margin: 0 auto 25px;
  font-size: 14px;
  color: #d0bca8;
}

.dt-contact a {
  display: inline-block;
  padding: 14px 28px;
  background: var(--accent);
  color: #160d04;
  border-radius: 9px;
  font-weight: 800;
  font-size: 14px;
  transition: background .2s;
}

.dt-contact a:hover {
  background: var(--accent-hover);
}

/* FOOTER */

.dt-footer {
  padding: 35px 0;
  background: #110e0b;
  border-top: 1px solid var(--border);
}

.dt-footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.dt-footer p {
  margin: 0;
  font-size: 12px;
  color: #a99b8d;
}

.dt-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.dt-footer-links a {
  font-size: 12px;
  color: #c1b3a5;
}

.dt-footer-links a:hover {
  color: var(--accent);
}

/* RESPONSIVE */

@media (max-width: 950px) {
  .dt-layout {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 22px;
  }

  .dt-section {
    padding: 28px;
  }
}

@media (max-width: 768px) {
  .dt-layout {
    grid-template-columns: 1fr;
  }

  .dt-sidebar {
    position: static;
    max-height: 290px;
  }

  .dt-hero {
    padding: 65px 0;
  }

  .dt-main {
    padding: 40px 0 75px;
  }
}

@media (max-width: 480px) {
  .dt-container {
    width: calc(100% - 28px);
  }

  .dt-hero h1 {
    letter-spacing: -1.5px;
  }

  .dt-hero p {
    font-size: 14px;
  }

  .dt-section {
    padding: 24px 20px;
  }

  .dt-section-heading {
    gap: 12px;
  }

  .dt-section h2 {
    font-size: 20px;
  }

  .dt-num {
    min-width: 36px;
    width: 36px;
    height: 36px;
  }

  .dt-intro {
    padding: 22px;
  }

  .dt-contact {
    padding: 32px 20px;
  }

  .dt-footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}