/* ============================================================
   Tenra Energie & Elektrotechniek — hoofdstylesheet
   Modern, rustig, technisch professioneel
   ============================================================ */

:root {
  --navy: #0e2a3f;          /* diep donkerblauw — betrouwbaar, technisch */
  --navy-dark: #0a2033;
  --navy-light: #14374f;
  --green: #17a86b;         /* energie & duurzaamheid */
  --green-dark: #128554;
  --green-soft: #e6f6ef;
  --amber: #f5a623;         /* subtiel energie-accent */
  --bg: #ffffff;
  --bg-alt: #f4f7f9;
  --text: #24303a;
  --text-soft: #55636e;
  --border: #dfe6ea;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(14, 42, 63, 0.08);
  --maxw: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
}

img { max-width: 100%; }

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

h1, h2, h3 { color: var(--navy); line-height: 1.25; font-weight: 700; }
h1 { font-size: clamp(1.9rem, 4vw, 2.9rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 0.6em; }
h3 { font-size: 1.15rem; margin-bottom: 0.4em; }
p { margin-bottom: 1em; }
.lead { font-size: 1.15rem; color: var(--text-soft); }

section { padding: 64px 0; }
section.alt { background: var(--bg-alt); }

/* ---------- Topbar ---------- */
.topbar {
  background: var(--navy-dark);
  color: #cfe0ea;
  font-size: 0.85rem;
  padding: 6px 0;
}
.topbar .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.topbar a { color: #fff; text-decoration: none; font-weight: 600; }
.topbar a:hover { color: var(--green); }

/* ---------- Header / navigatie ---------- */
header.site {
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(14,42,63,.07);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--maxw);
  margin: 0 auto;
  gap: 16px;
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo .mark {
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--navy);
  display: flex; align-items: center; justify-content: center;
  flex: 0 0 auto;
}
.logo .mark svg { width: 30px; height: 30px; display: block; }
.logo .name { color: var(--navy); font-weight: 800; font-size: 1.15rem; line-height: 1.15; }
.logo .name small { display: block; color: var(--text-soft); font-weight: 500; font-size: 0.72rem; letter-spacing: .04em; }

nav.main ul { list-style: none; display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
nav.main a {
  text-decoration: none; color: var(--navy); font-weight: 600; font-size: 0.92rem;
  padding: 8px 10px; border-radius: 8px;
}
nav.main a:hover, nav.main a.active { background: var(--green-soft); color: var(--green-dark); }

/* Dropdown diensten */
.dropdown { position: relative; }
.dropdown > a::after { content: " ▾"; font-size: 0.7em; }
.dropdown-menu {
  display: none; position: absolute; top: 100%; left: 0;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); min-width: 250px; padding: 8px; z-index: 200;
}
.dropdown:hover .dropdown-menu, .dropdown:focus-within .dropdown-menu { display: block; }
.dropdown-menu a { display: block; padding: 9px 12px; }

/* Mobiel menu */
.menu-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; font-size: 1.2rem; cursor: pointer; color: var(--navy); }

/* ---------- Knoppen ---------- */
.btn {
  display: inline-block; text-decoration: none; font-weight: 700;
  padding: 13px 26px; border-radius: 10px; font-size: 1rem;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
  border: none; cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--green); color: #fff; box-shadow: 0 4px 14px rgba(23,168,107,.35); }
.btn-primary:hover { background: var(--green-dark); }
.btn-secondary { background: transparent; color: var(--navy); border: 2px solid var(--navy); }
.btn-secondary:hover { background: var(--navy); color: #fff; }
.btn-light { background: #fff; color: var(--navy); }
.btn-light:hover { background: var(--green-soft); }
.btn-sm { padding: 9px 18px; font-size: 0.9rem; }
.nav .btn { white-space: nowrap; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(140deg, var(--navy-dark) 0%, var(--navy) 55%, var(--navy-light) 100%);
  color: #eaf2f7; padding: 88px 0 72px;
  position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; right: -140px; top: -140px;
  width: 480px; height: 480px; border-radius: 50%;
  background: radial-gradient(circle, rgba(23,168,107,.28), transparent 70%);
}
.hero .container { position: relative; z-index: 1; max-width: 820px; }
.hero h1 { color: #fff; margin-bottom: 18px; }
.hero p.lead { color: #c4d6e2; margin-bottom: 30px; }
.hero .actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.hero .kicker {
  display: inline-block; background: rgba(23,168,107,.16); color: #4fd39c;
  border: 1px solid rgba(23,168,107,.4);
  font-size: 0.82rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
  padding: 5px 14px; border-radius: 999px; margin-bottom: 20px;
}

/* Trust-badges */
.trust { display: flex; flex-wrap: wrap; gap: 10px 26px; font-size: 0.92rem; color: #c4d6e2; }
.trust span::before { content: "✓ "; color: var(--green); font-weight: 800; }
.trust.dark { color: var(--text-soft); }

/* ---------- Kaarten / diensten ---------- */
.grid { display: grid; gap: 22px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
  display: flex; flex-direction: column;
  transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 10px 28px rgba(14,42,63,.13); }
.card .icon {
  width: 48px; height: 48px; border-radius: 10px; background: var(--green-soft);
  display: flex; align-items: center; justify-content: center; font-size: 1.4rem; margin-bottom: 14px;
}
.card p { color: var(--text-soft); font-size: 0.95rem; flex: 1; }
.card a.more { color: var(--green-dark); font-weight: 700; text-decoration: none; font-size: 0.92rem; }
.card a.more:hover { text-decoration: underline; }

/* ---------- USP / waarom Tenra ---------- */
.usp { display: flex; gap: 14px; align-items: flex-start; }
.usp .dot {
  flex: 0 0 auto; width: 42px; height: 42px; border-radius: 50%;
  background: var(--green-soft); color: var(--green-dark);
  display: flex; align-items: center; justify-content: center; font-size: 1.15rem; font-weight: 800;
}
.usp p { color: var(--text-soft); font-size: 0.95rem; margin: 0; }

/* ---------- Stappen ---------- */
.steps { counter-reset: step; }
.step { position: relative; padding: 26px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.step::before {
  counter-increment: step; content: counter(step);
  display: flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--navy); color: #fff; font-weight: 800; font-size: 1.1rem; margin-bottom: 14px;
}
.step p { color: var(--text-soft); font-size: 0.95rem; margin: 0; }

/* ---------- Werkgebied ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.chip {
  background: #fff; border: 1px solid var(--border); border-radius: 999px;
  padding: 7px 16px; font-size: 0.9rem; font-weight: 600; color: var(--navy);
}
.chip.accent { background: var(--green-soft); border-color: var(--green); color: var(--green-dark); }

/* ---------- FAQ ---------- */
.faq details {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  margin-bottom: 12px; overflow: hidden;
}
.faq summary {
  cursor: pointer; padding: 18px 22px; font-weight: 700; color: var(--navy);
  list-style: none; position: relative; padding-right: 48px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-size: 1.4rem; color: var(--green); font-weight: 400;
}
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 22px 18px; color: var(--text-soft); margin: 0; }

/* ---------- Reviews ---------- */
.review .stars { color: var(--amber); font-size: 1.1rem; letter-spacing: 2px; margin-bottom: 10px; }
.review p { font-style: italic; }
.review .who { font-weight: 700; color: var(--navy); font-size: 0.9rem; margin-top: 10px; }

/* ---------- Checklists ---------- */
ul.check { list-style: none; margin: 0 0 1.2em; }
ul.check li { padding: 6px 0 6px 32px; position: relative; }
ul.check li::before {
  content: "✓"; position: absolute; left: 0; top: 6px;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--green-soft); color: var(--green-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 800;
}

/* ---------- CTA-band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: #eaf2f7; border-radius: 18px; padding: 48px 40px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px;
}
.cta-band h2 { color: #fff; margin-bottom: 8px; }
.cta-band p { color: #c4d6e2; margin: 0; max-width: 560px; }
.cta-band .actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- Pagina-hero (subpagina's) ---------- */
.page-hero {
  background: linear-gradient(140deg, var(--navy-dark), var(--navy));
  color: #eaf2f7; padding: 60px 0 48px;
}
.page-hero h1 { color: #fff; margin-bottom: 12px; }
.page-hero p { color: #c4d6e2; max-width: 720px; margin-bottom: 22px; }
.breadcrumb { font-size: 0.82rem; color: #8fa9ba; margin-bottom: 18px; }
.breadcrumb a { color: #b8cddb; text-decoration: none; }
.breadcrumb a:hover { color: #fff; }

/* ---------- Twee-koloms content ---------- */
.split { display: grid; grid-template-columns: 1.4fr 1fr; gap: 44px; align-items: start; }
.sidebox {
  background: var(--green-soft); border: 1px solid #bfe8d4; border-radius: var(--radius);
  padding: 26px; position: sticky; top: 96px;
}
.sidebox h3 { color: var(--navy); }
.sidebox p { font-size: 0.93rem; color: var(--text-soft); }
.sidebox .btn { width: 100%; text-align: center; margin-bottom: 10px; }

/* ---------- Formulier ---------- */
form.offerte { display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
label { font-weight: 700; color: var(--navy); font-size: 0.92rem; display: block; margin-bottom: 6px; }
label .req { color: var(--green-dark); }
input, select, textarea {
  width: 100%; padding: 13px 14px; border: 1px solid var(--border); border-radius: 10px;
  font-size: 1rem; font-family: inherit; background: #fff; color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--green); border-color: var(--green); }
input[type="file"] { padding: 10px; background: var(--bg-alt); }
.form-note { font-size: 0.85rem; color: var(--text-soft); }
.form-success {
  display: none; background: var(--green-soft); border: 1px solid var(--green);
  color: var(--green-dark); padding: 18px 22px; border-radius: var(--radius); font-weight: 600;
}

/* ---------- Footer ---------- */
footer.site { background: var(--navy-dark); color: #b8cddb; padding: 56px 0 24px; font-size: 0.92rem; }
footer.site h4 { color: #fff; font-size: 1rem; margin-bottom: 14px; }
footer.site ul { list-style: none; }
footer.site li { margin-bottom: 8px; }
footer.site a { color: #b8cddb; text-decoration: none; }
footer.site a:hover { color: var(--green); }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 40px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 20px; font-size: 0.8rem; color: #7d95a6; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* ---------- Zwevende contactknoppen ---------- */
.float-contact { position: fixed; right: 20px; bottom: 20px; display: flex; flex-direction: column; gap: 12px; z-index: 300; }
.float-contact a {
  width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; text-decoration: none; color: #fff;
  box-shadow: 0 6px 18px rgba(0,0,0,.25);
  transition: transform .12s ease;
}
.float-contact a:hover { transform: scale(1.08); }
.float-contact .wa { background: #25d366; }
.float-contact .tel { background: var(--navy); }

/* ---------- Responsief ---------- */
@media (max-width: 960px) {
  .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .sidebox { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .menu-toggle { display: block; }
  nav.main { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; box-shadow: var(--shadow); padding: 12px 20px 20px; }
  nav.main.open { display: block; }
  nav.main ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .dropdown-menu { display: block; position: static; border: none; box-shadow: none; padding-left: 14px; min-width: 0; }
  .nav > .btn { display: none; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  section { padding: 44px 0; }
  .cta-band { padding: 34px 26px; }
}