/* =========================================================
   flexkaart.css — Eigen stijlblad voor /flexkaart
   Gescheiden van de globale site-CSS (style.css)
   ========================================================= */

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

:root {
  /* Flexkaart eigen kleurenpalet */
  --fk-bg:          #020b14;
  --fk-bg-card:     rgba(0, 200, 255, 0.04);
  --fk-border:      rgba(0, 200, 255, 0.12);
  --fk-accent:      #00c8ff;
  --fk-accent-2:    #00ff9d;
  --fk-accent-3:    #7c3aed;
  --fk-text:        #e2f0ff;
  --fk-muted:       #5a7a9a;
  --fk-glow:        rgba(0, 200, 255, 0.3);
  --fk-glow-2:      rgba(0, 255, 157, 0.2);
  --fk-radius:      16px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--fk-bg);
  color: var(--fk-text);
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
}

/* ── Grid-patroon achtergrond ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0, 200, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 200, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

/* ── Radiale gloed overlay ── */
body::after {
  content: '';
  position: fixed;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 80vw;
  height: 80vw;
  max-width: 900px;
  max-height: 900px;
  background: radial-gradient(ellipse at center,
    rgba(0, 200, 255, 0.07) 0%,
    rgba(0, 255, 157, 0.04) 40%,
    transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── Nav ── */
.fk-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 4rem;
  background: rgba(2, 11, 20, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--fk-border);
}

.fk-nav-logo {
  display: flex;
  align-items: center;
  gap: .7rem;
  text-decoration: none;
  color: var(--fk-text);
}

.fk-nav-logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--fk-accent), var(--fk-accent-2));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem;
}

.fk-nav-logo-text {
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: -.01em;
}

.fk-nav-logo-text span {
  background: linear-gradient(90deg, var(--fk-accent), var(--fk-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.fk-nav-back {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: var(--fk-muted);
  text-decoration: none;
  font-size: .83rem;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
  transition: color .2s;
}

.fk-nav-back:hover { color: var(--fk-text); }

/* ── Content wrapper ── */
.fk-content {
  position: relative;
  z-index: 1;
}

/* ── Hero ── */
.fk-hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 2rem 5rem;
  position: relative;
}

.fk-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(0, 200, 255, 0.08);
  border: 1px solid rgba(0, 200, 255, 0.2);
  border-radius: 999px;
  padding: .35rem 1rem;
  font-size: .75rem;
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  color: var(--fk-accent);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fkFadeUp .8s .1s forwards;
}

.fk-hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--fk-accent-2);
  animation: fkPulse 2s infinite;
}

.fk-hero-title {
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 900;
  letter-spacing: -.04em;
  line-height: .95;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fkFadeUp .8s .25s forwards;
}

.fk-hero-title .fk-gradient {
  background: linear-gradient(135deg, var(--fk-accent) 0%, var(--fk-accent-2) 50%, #fff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.fk-hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--fk-muted);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
  opacity: 0;
  animation: fkFadeUp .8s .4s forwards;
}

.fk-hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fkFadeUp .8s .55s forwards;
}

/* Scroll-indicator */
.fk-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  color: var(--fk-muted);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  opacity: 0;
  animation: fkFadeUp .8s .8s forwards;
}

.fk-scroll-arrow {
  width: 20px; height: 30px;
  border: 1.5px solid rgba(0, 200, 255, 0.3);
  border-radius: 10px;
  position: relative;
}

.fk-scroll-arrow::after {
  content: '';
  position: absolute;
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px; height: 7px;
  background: var(--fk-accent);
  border-radius: 2px;
  animation: fkScrollBob 1.5s ease-in-out infinite;
}

/* ── Knoppen ── */
.fk-btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .85rem 2rem;
  border-radius: 10px;
  font-size: .9rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform .22s, box-shadow .22s;
  letter-spacing: -.01em;
}

.fk-btn-primary {
  background: linear-gradient(135deg, var(--fk-accent), var(--fk-accent-2));
  color: #020b14;
  box-shadow: 0 0 32px rgba(0, 200, 255, 0.3);
}

.fk-btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 48px rgba(0, 200, 255, 0.5);
}

.fk-btn-ghost {
  background: rgba(0, 200, 255, 0.07);
  color: var(--fk-text);
  border: 1px solid var(--fk-border);
}

.fk-btn-ghost:hover {
  transform: translateY(-3px);
  border-color: var(--fk-accent);
  background: rgba(0, 200, 255, 0.12);
}

.fk-btn-large {
  padding: 1.1rem 2.8rem;
  font-size: 1.05rem;
  border-radius: 14px;
}

/* ── Secties ── */
.fk-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 4rem;
}

.fk-divider {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 4rem;
}

.fk-divider hr {
  border: none;
  border-top: 1px solid var(--fk-border);
}

.fk-label {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: .72rem;
  color: var(--fk-accent);
  letter-spacing: .22em;
  text-transform: uppercase;
  margin-bottom: .6rem;
}

.fk-title {
  font-size: clamp(1.9rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: 1.1;
  margin-bottom: .9rem;
}

.fk-title .fk-gradient {
  background: linear-gradient(90deg, var(--fk-accent), var(--fk-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.fk-intro-text {
  color: var(--fk-muted);
  font-size: .95rem;
  max-width: 600px;
  line-height: 1.75;
  margin-bottom: 3rem;
}

/* ── Wat is het – tweekoloms ── */
.fk-what-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.fk-what-visual {
  position: relative;
}

/* Energie-infographic: animerend ring-diagram */
.fk-ring-diagram {
  width: 100%;
  max-width: 380px;
  margin: 0 auto;
  display: block;
}

.fk-what-text p {
  color: var(--fk-muted);
  font-size: .93rem;
  line-height: 1.75;
  margin-bottom: 1.2rem;
}

.fk-what-text p strong {
  color: var(--fk-text);
  font-weight: 600;
}

/* ── Feature kaarten ── */
.fk-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}

.fk-feature-card {
  background: var(--fk-bg-card);
  border: 1px solid var(--fk-border);
  border-radius: var(--fk-radius);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: border-color .3s, transform .3s, box-shadow .3s;
}

.fk-feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--fk-accent), var(--fk-accent-2));
  opacity: 0;
  transition: opacity .3s;
}

.fk-feature-card:hover {
  border-color: rgba(0, 200, 255, 0.3);
  transform: translateY(-5px);
  box-shadow: 0 20px 50px rgba(0, 200, 255, 0.08);
}

.fk-feature-card:hover::before { opacity: 1; }

.fk-feature-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  display: block;
}

.fk-feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: .5rem;
  letter-spacing: -.01em;
}

.fk-feature-desc {
  font-size: .85rem;
  color: var(--fk-muted);
  line-height: 1.65;
}

/* ── Statistieken balk ── */
.fk-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
  margin-top: 4rem;
}

.fk-stat-card {
  background: rgba(0, 200, 255, 0.04);
  border: 1px solid rgba(0, 200, 255, 0.1);
  border-radius: var(--fk-radius);
  padding: 1.6rem 1.2rem;
  text-align: center;
}

.fk-stat-number {
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: -.04em;
  background: linear-gradient(90deg, var(--fk-accent), var(--fk-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: .3rem;
}

.fk-stat-label {
  font-size: .78rem;
  color: var(--fk-muted);
  letter-spacing: .04em;
}

/* ── Hoe het werkt – stappen ── */
.fk-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  position: relative;
}

/* Verbindingslijn tussen stappen */
.fk-steps::before {
  content: '';
  position: absolute;
  top: 2rem;
  left: calc(16.66% + 1rem);
  right: calc(16.66% + 1rem);
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    rgba(0, 200, 255, 0.3) 20%,
    rgba(0, 200, 255, 0.3) 80%,
    transparent);
}

.fk-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
}

.fk-step-num {
  width: 4rem; height: 4rem;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0,200,255,.15), rgba(0,255,157,.1));
  border: 1.5px solid rgba(0, 200, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fk-accent);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.fk-step-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: .3rem;
}

.fk-step-desc {
  font-size: .83rem;
  color: var(--fk-muted);
  line-height: 1.6;
}

/* ── Glassmorphism CTA-blok ── */
.fk-cta-block {
  background: linear-gradient(135deg,
    rgba(0, 200, 255, 0.07) 0%,
    rgba(0, 255, 157, 0.04) 50%,
    rgba(124, 58, 237, 0.06) 100%);
  border: 1px solid rgba(0, 200, 255, 0.15);
  border-radius: 24px;
  padding: 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.fk-cta-block::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 200px;
  background: radial-gradient(ellipse, rgba(0, 200, 255, 0.08), transparent 70%);
  pointer-events: none;
}

.fk-cta-block .fk-title {
  margin-bottom: .6rem;
}

.fk-cta-block .fk-intro-text {
  margin: 0 auto 2.5rem;
}

.fk-cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ── Energie-thema highlight list ── */
.fk-highlight-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  margin-top: 1.5rem;
}

.fk-highlight-list li {
  display: flex;
  align-items: flex-start;
  gap: .8rem;
  font-size: .88rem;
  color: var(--fk-muted);
  line-height: 1.55;
}

.fk-highlight-list li::before {
  content: '▸';
  color: var(--fk-accent-2);
  font-size: .75rem;
  margin-top: .15rem;
  flex-shrink: 0;
}

.fk-highlight-list li strong {
  color: var(--fk-text);
  font-weight: 600;
}

/* ── Tag pills ── */
.fk-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.8rem;
}

.fk-tag {
  display: inline-block;
  padding: .3rem .85rem;
  border-radius: 999px;
  font-size: .72rem;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: .06em;
  background: rgba(0, 200, 255, 0.07);
  border: 1px solid rgba(0, 200, 255, 0.15);
  color: var(--fk-accent);
}

/* ── Footer ── */
.fk-footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem 4rem;
  border-top: 1px solid var(--fk-border);
  color: var(--fk-muted);
  font-size: .78rem;
  font-family: 'JetBrains Mono', monospace;
}

.fk-footer a {
  color: var(--fk-accent);
  text-decoration: none;
}

.fk-footer a:hover { text-decoration: underline; }

/* ── Reveal animatie ── */
.fk-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .65s ease, transform .65s ease;
}

.fk-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Keyframes ── */
@keyframes fkFadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fkPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(.8); }
}

@keyframes fkScrollBob {
  0%   { transform: translateX(-50%) translateY(0); opacity: 1; }
  100% { transform: translateX(-50%) translateY(10px); opacity: 0; }
}

@keyframes fkRingRotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes fkRingRotateCCW {
  from { transform: rotate(0deg); }
  to   { transform: rotate(-360deg); }
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .fk-features-grid { grid-template-columns: repeat(2, 1fr); }
  .fk-stats-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .fk-nav { padding: 1rem 1.5rem; }
  .fk-section { padding: 4rem 1.5rem; }
  .fk-divider { padding: 0 1.5rem; }
  .fk-what-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .fk-what-visual { max-width: 300px; margin: 0 auto; }
  .fk-steps { grid-template-columns: 1fr; }
  .fk-steps::before { display: none; }
  .fk-cta-block { padding: 2.5rem 1.5rem; }
  .fk-hero { padding: 7rem 1.5rem 4rem; }
}

@media (max-width: 600px) {
  .fk-features-grid { grid-template-columns: 1fr; }
  .fk-stats-row { grid-template-columns: repeat(2, 1fr); }
  .fk-hero-title { font-size: clamp(2.5rem, 12vw, 4rem); }
  .fk-nav-back span { display: none; }
}