/* ==========================================================================
   Helven Coaching — stylesheet
   Charcoal + wit + sportieve accentkleur. Barlow Condensed / Inter.
   ========================================================================== */
:root{
  --ink:#15181d;          /* bijna-zwart charcoal      */
  --ink-2:#1d222a;        /* iets lichter voor secties */
  --paper:#ffffff;
  --paper-2:#f4f6f9;      /* lichte sectie-achtergrond */
  --line:#e5e8ee;
  --muted:#5b6472;
  --muted-light:#9aa4b2;
  --accent:#1f66ff;       /* sportief blauw            */
  --accent-600:#0f4fd8;
  --accent-ink:#ffffff;
  --radius:14px;
  --radius-lg:22px;
  --shadow:0 10px 30px -12px rgba(16,24,40,.18);
  --shadow-lg:0 24px 60px -20px rgba(16,24,40,.35);
  --wrap:1160px;
  --font-head:'Barlow Condensed',system-ui,sans-serif;
  --font-body:'Inter',system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font-body);color:var(--ink);
  background:var(--paper);line-height:1.65;font-size:17px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;line-height:1.02;
  letter-spacing:-.01em;text-transform:uppercase;margin:0}
p{margin:0 0 1rem}

.container{width:min(var(--wrap),92vw);margin-inline:auto}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;
  padding:.6rem 1rem;z-index:200}
.skip:focus{left:1rem;top:1rem}

/* ---- Buttons ------------------------------------------------------------ */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-head);
  font-weight:700;text-transform:uppercase;letter-spacing:.03em;font-size:1.05rem;
  padding:.85rem 1.6rem;border-radius:999px;border:2px solid transparent;
  cursor:pointer;transition:transform .15s ease,background .15s ease,color .15s ease;
  white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{background:var(--accent-600)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#000}
.btn-lg{font-size:1.2rem;padding:1rem 2rem}

/* ---- Header / nav ------------------------------------------------------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(21,24,29,.92);
  backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;
  height:74px}
.brand{display:flex;flex-direction:column;line-height:.9;color:#fff}
.brand-mark{font-family:var(--font-head);font-weight:800;font-size:1.6rem;
  letter-spacing:.02em}
.brand-sub{font-family:var(--font-head);font-weight:600;font-size:.72rem;
  letter-spacing:.42em;color:var(--accent);text-transform:uppercase}
.nav{display:flex;align-items:center;gap:1.8rem}
.nav a{color:#e7eaf0;font-weight:500;font-size:.98rem;position:relative;padding:.3rem 0}
.nav a:not(.btn):hover{color:#fff}
.nav a[aria-current=page]{color:#fff}
.nav a[aria-current=page]::after{content:"";position:absolute;left:0;right:0;
  bottom:-4px;height:2px;background:var(--accent)}
.nav-cta{color:#fff;padding:1rem 2.2rem;margin-left:.5rem}
.nav-cta.is-active{box-shadow:0 0 0 3px rgba(31,102,255,.35)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;
  cursor:pointer;padding:8px}
.nav-toggle span{width:26px;height:2px;background:#fff;transition:.25s}

/* ---- Hero --------------------------------------------------------------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;
  background:radial-gradient(1200px 500px at 80% -10%,rgba(31,102,255,.28),transparent 60%);
  pointer-events:none}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;
  gap:3rem;align-items:center;padding:5.5rem 0 5rem}
.hero-eyebrow{display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--font-head);font-weight:600;letter-spacing:.22em;
  text-transform:uppercase;font-size:.85rem;color:var(--accent);margin-bottom:1.2rem}
.hero-eyebrow::before{content:"";width:34px;height:2px;background:var(--accent)}
.hero h1{font-size:clamp(2.8rem,6vw,4.7rem);margin-bottom:1.3rem}
.hero h1 .accent{color:var(--accent)}
.hero-lead{font-size:1.2rem;color:#c4ccd8;max-width:46ch;margin-bottom:2rem}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap}
.hero-media{position:relative}
.hero-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);
  height:70vh;object-fit:cover;width:100%}
.hero-badge{position:absolute;left:-18px;bottom:26px;background:#fff;color:var(--ink);
  padding:.9rem 1.15rem;border-radius:var(--radius);box-shadow:var(--shadow-lg);
  display:flex;align-items:center;gap:.7rem;font-weight:600;font-size:.9rem}
.hero-badge strong{font-family:var(--font-head);font-size:1.15rem}

/* ---- Hero performance-kaartje (geanimeerd) ------------------------------ */
.perf-card{position:absolute;left:-22px;bottom:24px;width:min(300px,88%);
  background:rgba(17,20,25,.86);backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:1rem 1.1rem;
  box-shadow:var(--shadow-lg);color:#fff}
.perf-head{display:flex;align-items:center;gap:.5rem;font-size:.82rem}
.perf-dot{width:8px;height:8px;border-radius:50%;background:#28d17c;
  box-shadow:0 0 0 0 rgba(40,209,124,.6)}
.perf-title{font-family:var(--font-head);text-transform:uppercase;letter-spacing:.12em;
  font-weight:600;color:#cfd6e2}
.perf-hr{margin-left:auto;color:#fff;font-size:.9rem}
.perf-hr b{font-family:var(--font-head);font-size:1.15rem;color:var(--accent)}
.perf-down{color:#28d17c;font-size:.7em;vertical-align:middle}
.perf-up{color:#28d17c;font-size:.7em;vertical-align:middle}
.perf-ecg{margin:.5rem 0 .2rem}
.perf-ecg svg{width:100%;height:44px;display:block;overflow:hidden}
.ecg-line{fill:none;stroke:var(--accent);stroke-width:2;
  stroke-linecap:round;stroke-linejoin:round;
  filter:drop-shadow(0 0 4px rgba(31,102,255,.7))}
.ecg-scroll{animation:ecgScroll 4.5s linear infinite}

/* Wekelijkse vorm-balkjes */
.perf-weeks{margin:.5rem 0 .1rem}
.perf-weeks .perf-label{display:block;margin-bottom:.45rem}
.perf-bars{display:flex;align-items:flex-end;gap:6px;height:40px}
.pbar{flex:1;height:var(--h);min-height:4px;border-radius:5px 5px 0 0;
  background:linear-gradient(180deg,#5b8bff,var(--accent));transform-origin:bottom}
.pbar-now{background:linear-gradient(180deg,#eaf1ff,var(--accent));
  box-shadow:0 0 8px rgba(31,102,255,.6)}
.perf-week-labels{display:flex;gap:6px;margin-top:4px}
.perf-week-labels i{flex:1;text-align:center;font-style:normal;
  font-family:var(--font-head);font-size:.62rem;letter-spacing:.02em;color:#8892a0}

.perf-trend{display:flex;align-items:flex-end;gap:.9rem;
  border-top:1px solid rgba(255,255,255,.1);padding-top:.7rem;margin-top:.5rem}
.perf-metric{display:flex;flex-direction:column;line-height:1.1}
.perf-label{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:#9aa4b2;
  font-family:var(--font-head)}
.perf-val b{font-family:var(--font-head);font-size:1.45rem;color:#fff}
.trend-svg{flex:1;height:42px}
.trend-area{fill:url(#trendFill)}
.trend-line{fill:none;stroke:var(--accent);stroke-width:2.5;stroke-linecap:round;
  stroke-linejoin:round;stroke-dasharray:190}
.trend-dots circle{fill:#fff}
.trend-dots circle:nth-child(5){fill:var(--accent)}

/* Vóór het in beeld komt (alleen wanneer JS de kaart 'armt') */
.perf-card.is-armed .ecg-scroll{animation-play-state:paused}
.perf-card.is-armed .pbar{transform:scaleY(0)}
.perf-card.is-armed .trend-area{opacity:0}
.perf-card.is-armed .trend-line{stroke-dashoffset:190}
.perf-card.is-armed .trend-dots circle{opacity:0}

/* Zodra het in beeld scrollt: alles animeert in (rustig tempo) */
.perf-card.is-visible .perf-dot{animation:pulseDot 1.9s ease-out infinite}
.perf-card.is-visible .ecg-scroll{animation-play-state:running}
.perf-card.is-visible .pbar{animation:growBar .7s cubic-bezier(.2,.75,.25,1) forwards}
.perf-card.is-visible .pbar:nth-child(1){animation-delay:.2s}
.perf-card.is-visible .pbar:nth-child(2){animation-delay:.34s}
.perf-card.is-visible .pbar:nth-child(3){animation-delay:.48s}
.perf-card.is-visible .pbar:nth-child(4){animation-delay:.62s}
.perf-card.is-visible .pbar:nth-child(5){animation-delay:.76s}
.perf-card.is-visible .pbar:nth-child(6){animation-delay:.9s}
.perf-card.is-visible .trend-area{animation:fadeArea .8s ease 2.1s forwards}
.perf-card.is-visible .trend-line{animation:drawTrend 2.6s ease 1.5s forwards}
.perf-card.is-visible .trend-dots circle{animation:popDot .01s linear forwards}
.perf-card.is-visible .trend-dots circle:nth-child(1){animation-delay:1.7s}
.perf-card.is-visible .trend-dots circle:nth-child(2){animation-delay:2.05s}
.perf-card.is-visible .trend-dots circle:nth-child(3){animation-delay:2.4s}
.perf-card.is-visible .trend-dots circle:nth-child(4){animation-delay:2.75s}
.perf-card.is-visible .trend-dots circle:nth-child(5){animation-delay:3.1s}

@keyframes ecgScroll{from{transform:translateX(0)}to{transform:translateX(-240px)}}
@keyframes pulseDot{0%{box-shadow:0 0 0 0 rgba(40,209,124,.6)}
  70%{box-shadow:0 0 0 8px rgba(40,209,124,0)}100%{box-shadow:0 0 0 0 rgba(40,209,124,0)}}
@keyframes growBar{from{transform:scaleY(0)}to{transform:scaleY(1)}}
@keyframes drawTrend{to{stroke-dashoffset:0}}
@keyframes fadeArea{from{opacity:0}to{opacity:1}}
@keyframes popDot{to{opacity:1}}

@media(prefers-reduced-motion:reduce){
  .perf-card.is-armed .ecg-scroll{animation:none}
  .perf-card.is-armed .pbar{transform:none}
  .perf-card.is-armed .trend-area{opacity:1}
  .perf-card.is-armed .trend-line{stroke-dashoffset:0}
  .perf-card.is-armed .trend-dots circle{opacity:1}
}

/* ---- Section scaffolding ------------------------------------------------ */
.section{padding:5rem 0}
.section-dark{background:var(--ink);color:#fff}
.section-alt{background:var(--paper-2)}
.section-head{max-width:64ch;margin-bottom:3rem}
.section-head.center{margin-inline:auto;text-align:center}
.eyebrow{font-family:var(--font-head);font-weight:600;letter-spacing:.22em;
  text-transform:uppercase;font-size:.82rem;color:var(--accent);
  display:block;margin-bottom:.8rem}
.section h2{font-size:clamp(2rem,4vw,3rem);margin-bottom:1rem}
.section-lead{color:var(--muted);font-size:1.15rem}
.section-dark .section-lead{color:#b8c1cf}

/* ---- Service cards ------------------------------------------------------ */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:2rem 1.8rem;transition:transform .18s ease,box-shadow .18s ease,border-color .18s;
  display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card-icon{width:52px;height:52px;border-radius:13px;display:grid;place-items:center;
  background:rgba(31,102,255,.1);color:var(--accent);margin-bottom:1.2rem}
.card-icon svg{width:26px;height:26px}
.card h3{font-size:1.5rem;margin-bottom:.6rem}
.card p{color:var(--muted);font-size:.98rem;margin-bottom:1.2rem}
.card .card-link{margin-top:auto;font-family:var(--font-head);font-weight:700;
  text-transform:uppercase;letter-spacing:.03em;color:var(--accent);
  display:inline-flex;align-items:center;gap:.4rem}
.card .card-link svg{width:16px;height:16px;transition:transform .15s}
.card:hover .card-link svg{transform:translateX(4px)}

/* ---- Feature list (waarom) --------------------------------------------- */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.4rem}
.feature{display:flex;gap:1rem;align-items:flex-start}
.feature-num{font-family:var(--font-head);font-weight:800;font-size:1.6rem;
  color:var(--accent);line-height:1;min-width:1.8rem}
.feature h3{font-size:1.2rem;margin-bottom:.35rem;text-transform:none;letter-spacing:0}
.feature p{color:var(--muted);font-size:.95rem;margin:0}
.section-dark .feature p{color:#aab4c2}

/* ---- Split / TrainingPeaks band ---------------------------------------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:center}
.split-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow);
  aspect-ratio:5/4;object-fit:cover;width:100%}
.pill{display:inline-block;background:rgba(31,102,255,.12);color:var(--accent);
  font-weight:600;font-size:.85rem;padding:.3rem .9rem;border-radius:999px;
  margin-bottom:1rem}
.checklist{list-style:none;padding:0;margin:1.4rem 0 0;display:grid;gap:.8rem}
.checklist li{display:flex;gap:.7rem;align-items:flex-start;color:var(--muted)}
.section-dark .checklist li{color:#c4ccd8}
.checklist svg{width:22px;height:22px;color:var(--accent);flex:0 0 auto;margin-top:2px}

/* ---- CTA band ----------------------------------------------------------- */
.cta{position:relative;background:var(--accent);color:#fff;border-radius:var(--radius-lg);
  padding:3.5rem;text-align:center;overflow:hidden}
.cta::after{content:"";position:absolute;inset:0;
  background:radial-gradient(700px 300px at 50% -40%,rgba(255,255,255,.25),transparent)}
.cta > *{position:relative;z-index:1}
.cta h2{font-size:clamp(1.9rem,4vw,2.8rem);margin-bottom:.8rem}
.cta p{font-size:1.15rem;color:rgba(255,255,255,.9);max-width:52ch;margin:0 auto 1.8rem}
.cta .btn-dark{background:#fff;color:var(--accent)}
.cta .btn-dark:hover{background:var(--ink);color:#fff}

/* ---- Detailed service blocks (coaching page) --------------------------- */
.service-block{display:grid;grid-template-columns:56px 1fr;gap:1.5rem;
  padding:2.4rem 0;border-top:1px solid var(--line)}
.service-block:first-of-type{border-top:0}
.service-block .card-icon{margin:0}
.service-block h3{font-size:1.7rem;margin-bottom:.7rem}
.service-block p{color:var(--muted);margin-bottom:.7rem}

/* ---- Coaches ------------------------------------------------------------ */
.coach-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.8rem}
.coach{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:2rem;display:flex;gap:1.3rem;align-items:flex-start}
.coach-avatar{width:64px;height:64px;border-radius:50%;flex:0 0 auto;
  background:var(--ink);color:#fff;display:grid;place-items:center;
  font-family:var(--font-head);font-weight:800;font-size:1.5rem}
.coach h3{font-size:1.35rem;margin-bottom:.15rem}
.coach .coach-role{color:var(--accent);font-weight:600;font-size:.9rem;margin-bottom:.6rem}
.coach p{color:var(--muted);font-size:.96rem;margin:0}
.coach a{color:var(--accent);font-weight:600}

/* ---- Contact ------------------------------------------------------------ */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:3rem;align-items:start}
.contact-info{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:2.4rem}
.contact-info h3{font-size:1.6rem;margin-bottom:1.5rem}
.contact-item{display:flex;gap:1rem;align-items:flex-start;margin-bottom:1.4rem}
.contact-item svg{width:24px;height:24px;color:var(--accent);flex:0 0 auto;margin-top:2px}
.contact-item .label{font-family:var(--font-head);text-transform:uppercase;
  font-size:.78rem;letter-spacing:.12em;color:var(--muted-light)}
.contact-item .value{font-size:1.05rem}
.contact-item a:hover{color:var(--accent)}

.form{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:2.4rem;box-shadow:var(--shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
.field{margin-bottom:1.2rem;display:flex;flex-direction:column}
.field label{font-weight:600;font-size:.92rem;margin-bottom:.4rem}
.field input,.field textarea,.field select{
  font-family:inherit;font-size:1rem;padding:.8rem .95rem;border:1.5px solid var(--line);
  border-radius:10px;background:#fff;transition:border-color .15s,box-shadow .15s}
.field textarea{resize:vertical;min-height:140px}
.field input:focus,.field textarea:focus,.field select:focus{outline:0;
  border-color:var(--accent);box-shadow:0 0 0 3px rgba(31,102,255,.15)}
.field .req{color:var(--accent)}
.form .btn{width:100%;justify-content:center;margin-top:.4rem}
.form-note{font-size:.85rem;color:var(--muted);margin-top:1rem;text-align:center}
.hp{position:absolute;left:-9999px}  /* honeypot */

.alert{border-radius:12px;padding:1rem 1.2rem;margin-bottom:1.5rem;font-weight:500}
.alert-ok{background:#e7f7ec;color:#15803d;border:1px solid #bbe6c8}
.alert-err{background:#fdecec;color:#b91c1c;border:1px solid #f5c2c2}

/* ---- Footer ------------------------------------------------------------- */
.site-footer{background:var(--ink);color:#c4ccd8;padding:3.5rem 0 1.5rem;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.4fr;gap:2.5rem;
  padding-bottom:2.5rem;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .brand-mark{color:#fff;font-size:1.5rem}
.footer-tag{color:#fff;font-family:var(--font-head);text-transform:uppercase;
  font-weight:700;margin:.6rem 0 .4rem}
.footer-muted{color:var(--muted-light);font-size:.9rem}
.site-footer h4{color:#fff;font-size:1rem;letter-spacing:.1em;margin-bottom:1rem}
.footer-links{list-style:none;padding:0;margin:0;display:grid;gap:.6rem}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{display:flex;justify-content:space-between;padding-top:1.5rem;
  font-size:.88rem;color:var(--muted-light);flex-wrap:wrap;gap:.5rem}

/* ---- Responsive --------------------------------------------------------- */
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:2.5rem;padding:3.5rem 0}
  .hero-media{max-width:420px}
  .split{grid-template-columns:1fr;gap:2rem}
  .split-media{order:-1}
  .contact-grid{grid-template-columns:1fr}
  .coach-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:2rem}
}
@media(max-width:680px){
  .nav{position:fixed;inset:74px 0 auto 0;background:var(--ink);flex-direction:column;
    align-items:stretch;gap:0;padding:1rem 6vw 2rem;transform:translateY(-120%);
    transition:transform .3s ease;border-bottom:1px solid rgba(255,255,255,.1)}
  .nav.open{transform:translateY(0)}
  .nav a{padding:.9rem 0;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-cta{margin-top:1rem;text-align:center}
  .nav-toggle{display:flex}
  .form-row{grid-template-columns:1fr}
  .cta{padding:2.4rem 1.5rem}
  .footer-grid{grid-template-columns:1fr}
}