/* ============================================================
   5K SOCIAL CLUB — style.css
   Kleuren en typografie exact volgens de RHSE Brand Guide v1.0
   ============================================================ */

/* ----- Design tokens (brand guide) ----- */
:root {
  --zwart:  #0A0A0A;   /* RHSE Zwart  — primaire achtergrond, hoofdtekst */
  --oranje: #E8521A;   /* RHSE Oranje — accenten, CTA, highlights, logo  */
  --grijs:  #888888;   /* RHSE Grijs  — subtekst, iconen, secundaire info */
  --wit:    #FFFFFF;   /* RHSE Wit    — achtergrond, tekst op donker      */

  /* Afgeleide tinten (transparanties van de kernkleuren) */
  --zwart-zacht: #141414;
  --lijn: rgba(255, 255, 255, 0.12);
  --oranje-gloed: rgba(232, 82, 26, 0.35);

  /* Typografie — Arial, schaal afgeleid van de brand guide */
  --font: Arial, Helvetica, sans-serif;
  --maat-display: clamp(3rem, 11vw, 8.5rem);  /* Display */
  --maat-heading: clamp(1.75rem, 4vw, 2.75rem); /* Heading */
  --maat-body: 1.0625rem;                       /* Body */
  --maat-caption: 0.8125rem;                    /* Caption */

  --max-breedte: 68rem;
  --sectie-ruimte: clamp(5rem, 12vw, 9rem);
}

/* ----- Reset & basis ----- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--zwart);
  color: var(--wit);
  font-family: var(--font);
  font-size: var(--maat-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

h1, h2, h3 { line-height: 1.05; margin: 0 0 1rem; }

p { margin: 0 0 1rem; }

a { color: var(--wit); }

.accent { color: var(--oranje); }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

:focus-visible {
  outline: 3px solid var(--oranje);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 100;
  background: var(--oranje);
  color: var(--zwart);
  font-weight: bold;
  padding: 0.75rem 1.25rem;
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* ----- Knoppen ----- */
.btn {
  display: inline-block;
  background: var(--oranje);
  color: var(--zwart);
  font-weight: bold;
  font-size: 1rem;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 1rem 2rem;
  border: 2px solid var(--oranje);
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--oranje-gloed);
}
.btn--ghost {
  background: transparent;
  color: var(--wit);
  border-color: var(--lijn);
}
.btn--ghost:hover { border-color: var(--oranje); box-shadow: none; }
.btn--small { padding: 0.55rem 1.25rem; font-size: 0.85rem; }
.btn--full { width: 100%; }

/* ----- Navigatie ----- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 10, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--lijn);
}
.nav__inner {
  max-width: var(--max-breedte);
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  font-size: 1.35rem;
  font-weight: bold;
  letter-spacing: 0.04em;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav__logo-mark {
  width: 0.7rem;
  height: 0.7rem;
  background: var(--oranje);
  border-radius: 50%;
}
.nav__menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__menu a:not(.btn) {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--wit);
}
.nav__menu a:not(.btn):hover { color: var(--oranje); }

.nav__toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}
.nav__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--wit);
  margin: 5px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) { opacity: 0; }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(4) { transform: translateY(-7px) rotate(-45deg); }

/* ----- Hero ----- */
.hero {
  max-width: var(--max-breedte);
  margin: 0 auto;
  padding: clamp(4rem, 10vw, 8rem) 1.5rem 3rem;
}
.hero__eyebrow {
  color: var(--grijs);
  font-size: var(--maat-caption);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  margin-bottom: 1.5rem;
}
.hero__title {
  font-size: var(--maat-display);
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}
.hero__title-row {
  display: inline-flex;
  align-items: baseline;
  gap: clamp(1rem, 3vw, 2rem);
}
.hero__tagline {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  color: var(--grijs);
  margin: 1.5rem 0 2.5rem;
}
.hero__tagline em { color: var(--oranje); font-style: normal; font-weight: bold; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero__meta {
  margin-top: 2.5rem;
  color: var(--grijs);
  font-size: var(--maat-caption);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.dot {
  width: 0.55rem; height: 0.55rem;
  background: var(--oranje);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

/* Equalizer — het signatuur-element: de beat, letterlijk */
.equalizer {
  display: inline-flex;
  align-items: flex-end;
  gap: clamp(4px, 0.8vw, 9px);
  height: 0.85em;
}
.equalizer span {
  width: clamp(8px, 1.6vw, 18px);
  background: var(--oranje);
  border-radius: 3px;
  animation: beat 0.9s ease-in-out infinite;
}
.equalizer span:nth-child(1) { height: 45%; animation-delay: 0s; }
.equalizer span:nth-child(2) { height: 80%; animation-delay: 0.15s; }
.equalizer span:nth-child(3) { height: 60%; animation-delay: 0.3s; }
.equalizer span:nth-child(4) { height: 95%; animation-delay: 0.45s; }
.equalizer span:nth-child(5) { height: 55%; animation-delay: 0.6s; }
@keyframes beat {
  0%, 100% { transform: scaleY(0.55); }
  50% { transform: scaleY(1); }
}

/* ----- Ticker ----- */
.ticker {
  overflow: hidden;
  border-top: 1px solid var(--lijn);
  border-bottom: 1px solid var(--lijn);
  background: var(--oranje);
  color: var(--zwart);
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.7rem 0;
  white-space: nowrap;
}
.ticker__track {
  display: inline-flex;
  animation: ticker 22s linear infinite;
}
@keyframes ticker {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ----- Secties ----- */
.section {
  max-width: var(--max-breedte);
  margin: 0 auto;
  padding: var(--sectie-ruimte) 1.5rem;
}
.section--alt {
  max-width: none;
  background: var(--zwart-zacht);
  border-top: 1px solid var(--lijn);
  border-bottom: 1px solid var(--lijn);
}
.section--alt > * {
  max-width: var(--max-breedte);
  margin-left: auto;
  margin-right: auto;
}
.section__title {
  font-size: var(--maat-heading);
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: -0.01em;
}
.section__intro {
  color: var(--grijs);
  max-width: 38rem;
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
}

/* ----- Kaarten ----- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.card {
  border: 1px solid var(--lijn);
  border-radius: 12px;
  padding: 1.75rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover {
  border-color: var(--oranje);
  transform: translateY(-4px);
}
.card__title {
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--oranje);
}
.card p { color: var(--grijs); margin: 0; }

/* ----- BPM tool ----- */
.bpm-tool {
  border: 1px solid var(--lijn);
  border-radius: 16px;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: var(--zwart);
}
.bpm-tool__label {
  display: block;
  color: var(--grijs);
  font-size: var(--maat-caption);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-bottom: 0.4rem;
}
.bpm-tool__time {
  display: block;
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: bold;
  margin-bottom: 1.5rem;
  font-variant-numeric: tabular-nums;
}
input[type="range"] {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  height: 6px;
  background: var(--lijn);
  border-radius: 999px;
  outline-offset: 6px;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--oranje);
  border: 3px solid var(--zwart);
  box-shadow: 0 0 0 2px var(--oranje);
}
input[type="range"]::-moz-range-thumb {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--oranje);
  border: 3px solid var(--zwart);
  box-shadow: 0 0 0 2px var(--oranje);
}
.bpm-tool__scale {
  display: flex;
  justify-content: space-between;
  color: var(--grijs);
  font-size: var(--maat-caption);
  margin-top: 0.5rem;
}
.bpm-tool__result {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 2.5rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--lijn);
}
.bpm-tool__value {
  display: block;
  font-size: 2.2rem;
  font-weight: bold;
  font-variant-numeric: tabular-nums;
}
.bpm-tool__stat--main .bpm-tool__value { font-size: 3.2rem; }
.bpm-tool__unit {
  color: var(--grijs);
  font-size: var(--maat-caption);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}
.bpm-tool__vibe {
  flex-basis: 100%;
  color: var(--grijs);
  margin: 0;
}

/* ----- Details (Amsterdam) ----- */
.details {
  margin: 0 0 1.5rem;
  border-top: 1px solid var(--lijn);
}
.details__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--lijn);
}
.details__row dt {
  color: var(--grijs);
  text-transform: uppercase;
  font-size: var(--maat-caption);
  letter-spacing: 0.15em;
}
.details__row dd {
  margin: 0;
  font-weight: bold;
  font-size: 1.15rem;
  text-align: right;
}
.tba {
  color: var(--oranje);
  border: 1px dashed var(--oranje);
  border-radius: 999px;
  padding: 0.15rem 0.8rem;
  font-size: 0.95rem;
}
.details__note { color: var(--grijs); max-width: 36rem; }

/* ----- FAQ ----- */
.faq { display: grid; gap: 0.75rem; }
.faq__item {
  border: 1px solid var(--lijn);
  border-radius: 10px;
  background: var(--zwart);
}
.faq__item summary {
  cursor: pointer;
  font-weight: bold;
  padding: 1.1rem 1.4rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+";
  color: var(--oranje);
  font-size: 1.4rem;
  line-height: 1;
  transition: transform 0.2s ease;
}
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__item p {
  margin: 0;
  padding: 0 1.4rem 1.25rem;
  color: var(--grijs);
}

/* ----- Aanmelden ----- */
.signup { max-width: 32rem; }
.signup__field { margin-bottom: 1.25rem; }
.signup__field label {
  display: block;
  font-size: var(--maat-caption);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--grijs);
  margin-bottom: 0.4rem;
}
.signup input[type="text"],
.signup input[type="email"] {
  width: 100%;
  background: var(--zwart-zacht);
  border: 1px solid var(--lijn);
  border-radius: 8px;
  color: var(--wit);
  font-family: var(--font);
  font-size: 1rem;
  padding: 0.9rem 1rem;
}
.signup input:focus {
  outline: none;
  border-color: var(--oranje);
  box-shadow: 0 0 0 3px var(--oranje-gloed);
}
.signup input[aria-invalid="true"] { border-color: var(--oranje); }
.signup__error {
  color: var(--oranje);
  font-size: var(--maat-caption);
  margin: 0.35rem 0 0;
  min-height: 1em;
}
.signup__privacy {
  color: var(--grijs);
  font-size: var(--maat-caption);
  margin-top: 1rem;
}
.signup__success {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--oranje);
  border-radius: 8px;
  color: var(--oranje);
  font-weight: bold;
}

/* Honeypot: visueel verborgen, maar wél in de DOM voor bots */
.hp {
  position: absolute !important;
  left: -9999px !important;
  width: 1px; height: 1px;
  overflow: hidden;
}

/* ----- Footer ----- */
.footer {
  border-top: 1px solid var(--lijn);
  padding: 3rem 1.5rem;
}
.footer__inner {
  max-width: var(--max-breedte);
  margin: 0 auto;
}
.footer__brand { font-size: 1.5rem; font-weight: bold; margin-bottom: 0.5rem; }
.footer__line { margin: 0 0 0.25rem; }
.footer__line--muted { color: var(--grijs); }
.footer__legal {
  color: var(--grijs);
  font-size: var(--maat-caption);
  margin-top: 1.5rem;
}

/* ----- Scroll-reveal (JS voegt .reveal toe) ----- */
.reveal-init {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-init.reveal {
  opacity: 1;
  transform: none;
}

/* ----- Mobiel ----- */
@media (max-width: 760px) {
  .nav__toggle { display: block; }
  .nav__menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--zwart);
    border-bottom: 1px solid var(--lijn);
    padding: 0.5rem 1.5rem 1.25rem;
  }
  .nav__menu.open { display: flex; }
  .nav__menu li { width: 100%; }
  .nav__menu a:not(.btn) { display: block; padding: 0.9rem 0; }
  .nav__menu .btn { margin-top: 0.75rem; }

  .cards { grid-template-columns: 1fr; }
  .bpm-tool__result { gap: 1.5rem; }
}

/* ----- Minder beweging voor wie dat wil ----- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .equalizer span, .dot, .ticker__track { animation: none; }
  .reveal-init { opacity: 1; transform: none; transition: none; }
  .btn, .card { transition: none; }
}