/* calvera.run — athletic / kinetic energy */

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

:root {
  --black: #121212;
  --black-mid: #1a1a1a;
  --black-light: #222222;
  --charcoal: #2a2a2a;
  --lime: #c8ff00;
  --lime-dim: rgba(200, 255, 0, 0.1);
  --lime-mid: rgba(200, 255, 0, 0.25);
  --gray: #888888;
  --gray-light: #aaaaaa;
  --off-white: #f2f2f0;
  --white: #fafafa;
  --rule: rgba(255, 255, 255, 0.08);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Barlow', sans-serif;
  color: var(--black);
  line-height: 1.6;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

/* ---- header ---- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--black);
  border-bottom: 1px solid var(--rule);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  height: 60px;
  gap: 40px;
}

.wordmark {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.6rem;
  letter-spacing: 0.12em;
  color: var(--white);
  text-decoration: none;
  transition: color 0.2s;
}

.wordmark:hover {
  color: var(--lime);
}

.main-nav {
  display: flex;
  gap: 28px;
  margin-left: auto;
}

.main-nav a {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray);
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.main-nav a:hover {
  color: var(--white);
}

.header-cta a {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: var(--black);
  background: var(--lime);
  text-decoration: none;
  padding: 8px 22px;
  transition: all 0.2s;
  display: inline-block;
  clip-path: polygon(0 0, 100% 0, 96% 100%, 4% 100%);
}

.header-cta a:hover {
  background: #deff4d;
  transform: translateY(-1px);
}

/* ---- hero ---- */

.hero {
  background: var(--black);
  position: relative;
  overflow: hidden;
  min-height: 600px;
  display: flex;
  align-items: center;
}

/* topographic / contour background pattern */
.hero-topo {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image:
    radial-gradient(ellipse 600px 300px at 70% 40%, transparent 50%, var(--lime) 50.5%, transparent 51.5%),
    radial-gradient(ellipse 500px 250px at 70% 40%, transparent 50%, var(--lime) 50.5%, transparent 51.5%),
    radial-gradient(ellipse 400px 200px at 70% 40%, transparent 50%, var(--lime) 50.5%, transparent 51.5%),
    radial-gradient(ellipse 300px 150px at 70% 40%, transparent 50%, var(--lime) 50.5%, transparent 51.5%),
    radial-gradient(ellipse 200px 100px at 70% 40%, transparent 50%, var(--lime) 50.5%, transparent 51.5%),
    radial-gradient(ellipse 700px 350px at 30% 70%, transparent 50%, var(--lime) 50.5%, transparent 51.5%),
    radial-gradient(ellipse 550px 275px at 30% 70%, transparent 50%, var(--lime) 50.5%, transparent 51.5%),
    radial-gradient(ellipse 400px 200px at 30% 70%, transparent 50%, var(--lime) 50.5%, transparent 51.5%);
  pointer-events: none;
}

/* diagonal slash across hero */
.hero-diagonal {
  position: absolute;
  top: -20%;
  right: -5%;
  width: 45%;
  height: 160%;
  background: linear-gradient(135deg, transparent 40%, rgba(200, 255, 0, 0.03) 40%, rgba(200, 255, 0, 0.03) 60%, transparent 60%);
  transform: skewX(-12deg);
  pointer-events: none;
}

.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 100px 40px 120px;
  position: relative;
  z-index: 2;
}

.hero-label {
  font-family: 'Barlow', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 28px;
  display: inline-block;
  position: relative;
  padding-left: 36px;
}

.hero-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 24px;
  height: 2px;
  background: var(--lime);
}

.hero h1 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 7rem;
  color: var(--white);
  line-height: 0.92;
  letter-spacing: 0.02em;
  margin-bottom: 32px;
  max-width: 700px;
}

.hero-body {
  font-size: 1.05rem;
  color: var(--gray);
  max-width: 520px;
  line-height: 1.75;
  margin-bottom: 44px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
}

/* speed lines on the right of hero */
.hero-speed-lines {
  position: absolute;
  right: 8%;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 14px;
  z-index: 1;
}

.hero-speed-lines span {
  display: block;
  height: 3px;
  background: var(--lime);
  opacity: 0.15;
  animation: speedPulse 2s ease-in-out infinite;
}

.hero-speed-lines span:nth-child(1) { width: 120px; animation-delay: 0s; }
.hero-speed-lines span:nth-child(2) { width: 200px; animation-delay: 0.2s; }
.hero-speed-lines span:nth-child(3) { width: 160px; animation-delay: 0.4s; }
.hero-speed-lines span:nth-child(4) { width: 240px; animation-delay: 0.6s; }
.hero-speed-lines span:nth-child(5) { width: 100px; animation-delay: 0.8s; }

@keyframes speedPulse {
  0%, 100% { opacity: 0.08; transform: translateX(0); }
  50% { opacity: 0.3; transform: translateX(20px); }
}

/* ---- buttons ---- */

.btn {
  display: inline-block;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1rem;
  letter-spacing: 0.1em;
  padding: 16px 36px;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--lime);
  color: var(--black);
  clip-path: polygon(0 0, 100% 0, 96% 100%, 4% 100%);
}

.btn-primary:hover {
  background: #deff4d;
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-light);
  border: 1px solid rgba(255, 255, 255, 0.15);
  clip-path: polygon(0 0, 100% 0, 96% 100%, 4% 100%);
}

.btn-ghost:hover {
  border-color: var(--lime);
  color: var(--lime);
}

/* ---- pace strip ---- */

.pace-strip {
  background: var(--black-mid);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 14px 0;
  overflow: hidden;
}

.pace-strip-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  flex-wrap: wrap;
}

.pace-item {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  color: var(--gray);
  white-space: nowrap;
}

.pace-dot {
  width: 5px;
  height: 5px;
  background: var(--lime);
  flex-shrink: 0;
  transform: rotate(45deg);
}

/* ---- section utilities ---- */

.section-tag {
  display: inline-block;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--lime);
  border: 1px solid var(--lime);
  padding: 4px 14px;
  margin-bottom: 20px;
  clip-path: polygon(0 0, 100% 0, 96% 100%, 4% 100%);
}

.section-tag--light {
  color: var(--black);
  border-color: var(--lime);
  background: var(--lime);
}

.section-intro {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  margin-bottom: 56px;
}

.section-intro h2 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 3.2rem;
  letter-spacing: 0.03em;
  color: var(--black);
  line-height: 1;
}

.section-intro--light h2 {
  color: var(--white);
}

.section-lead {
  font-size: 1.05rem;
  color: var(--gray);
  margin-top: 12px;
}

/* ---- features ---- */

.features {
  padding: 100px 0;
  background: var(--white);
  position: relative;
}

/* subtle diagonal stripe texture */
.features::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 40px,
    rgba(0, 0, 0, 0.015) 40px,
    rgba(0, 0, 0, 0.015) 41px
  );
  pointer-events: none;
}

.features-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(0, 0, 0, 0.08);
  position: relative;
}

.feature-card {
  background: var(--white);
  padding: 48px 40px;
  position: relative;
  transition: all 0.3s;
}

.feature-card:hover {
  background: var(--off-white);
}

/* lime accent bar on hover */
.feature-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--lime);
  transition: width 0.4s ease;
}

.feature-card:hover::after {
  width: 100%;
}

.feature-icon {
  color: var(--lime);
  margin-bottom: 16px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--lime-dim);
  border-radius: 2px;
}

.feature-number {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--lime);
  margin-bottom: 16px;
  position: relative;
  padding-left: 20px;
}

.feature-number::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 10px;
  height: 1px;
  background: var(--lime);
}

.feature-card h3 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.6rem;
  letter-spacing: 0.04em;
  color: var(--black);
  margin-bottom: 14px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--gray);
  line-height: 1.75;
  margin-bottom: 24px;
}

.feature-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  list-style: none;
}

.feature-tags li {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--lime-dim);
  padding: 5px 14px;
  clip-path: polygon(0 0, 100% 0, 96% 100%, 4% 100%);
}

/* ---- split banner ---- */

.split-banner {
  background: var(--black);
  position: relative;
  overflow: hidden;
}

.split-banner-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 300px;
}

.split-left {
  padding: 80px 60px 80px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.split-kicker {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: var(--lime);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.split-left p {
  font-size: 1.05rem;
  color: var(--gray-light);
  line-height: 1.8;
  max-width: 460px;
}

.split-right {
  position: relative;
  overflow: hidden;
}

.split-visual {
  position: absolute;
  inset: 0;
  display: flex;
  gap: 8px;
  padding: 20px;
  transform: skewX(-8deg) translateX(20px);
}

.track-lane {
  flex: 1;
  background: linear-gradient(
    180deg,
    transparent 0%,
    var(--lime-dim) 20%,
    var(--lime-mid) 50%,
    var(--lime-dim) 80%,
    transparent 100%
  );
  border-radius: 2px;
  animation: laneGlow 3s ease-in-out infinite;
}

.track-lane:nth-child(1) { animation-delay: 0s; }
.track-lane:nth-child(2) { animation-delay: 0.15s; }
.track-lane:nth-child(3) { animation-delay: 0.3s; }
.track-lane:nth-child(4) { animation-delay: 0.45s; }
.track-lane:nth-child(5) { animation-delay: 0.6s; }
.track-lane:nth-child(6) { animation-delay: 0.75s; }
.track-lane:nth-child(7) { animation-delay: 0.9s; }
.track-lane:nth-child(8) { animation-delay: 1.05s; }

@keyframes laneGlow {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.8; }
}

/* ---- stats ---- */

.stats {
  background: var(--charcoal);
  padding: 100px 0;
  position: relative;
}

/* diagonal top edge */
.stats::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--white);
  clip-path: polygon(0 0, 100% 0, 100% 0%, 0 100%);
}

.stats-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: rgba(255, 255, 255, 0.06);
}

.stat-card {
  background: var(--charcoal);
  padding: 44px 32px;
  text-align: center;
  position: relative;
  transition: background 0.3s;
}

.stat-card:hover {
  background: var(--black-light);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: var(--lime);
}

.stat-number {
  display: block;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 3.8rem;
  color: var(--white);
  line-height: 1;
  letter-spacing: 0.02em;
}

.stat-unit {
  display: block;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1rem;
  letter-spacing: 0.12em;
  color: var(--lime);
  margin-top: 4px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.stat-label {
  display: block;
  font-size: 0.82rem;
  color: var(--gray);
  line-height: 1.4;
}

/* ---- beta / signup ---- */

.beta {
  padding: 100px 40px;
  max-width: 1280px;
  margin: 0 auto;
}

.beta-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 80px;
}

.beta-left h2 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 3.2rem;
  letter-spacing: 0.03em;
  color: var(--black);
  line-height: 1;
  margin-bottom: 24px;
}

.beta-body {
  font-size: 0.95rem;
  color: var(--gray);
  line-height: 1.75;
  margin-bottom: 40px;
}

.beta-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.beta-block {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.beta-block strong {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--gray);
}

.beta-block a,
.beta-block span {
  font-size: 0.92rem;
  color: var(--black);
  text-decoration: none;
}

.beta-block a:hover {
  color: var(--lime);
}

/* form */

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--gray);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  font-family: 'Barlow', sans-serif;
  font-size: 0.92rem;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: var(--off-white);
  color: var(--black);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--lime);
  box-shadow: 0 0 0 3px var(--lime-dim);
}

.form-group textarea {
  resize: vertical;
}

.beta-right .btn {
  width: 100%;
  text-align: center;
}

.thank-you {
  text-align: center;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0.06em;
  color: var(--lime);
  padding: 60px 0;
  background: var(--black);
  clip-path: polygon(0 0, 100% 0, 98% 100%, 2% 100%);
}

/* ---- footer ---- */

.site-footer {
  background: var(--black);
  color: var(--gray);
  padding-top: 72px;
  position: relative;
}

/* angled top edge */
.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 50px;
  background: var(--white);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 0%);
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px 60px;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 80px;
}

.footer-brand .wordmark {
  font-size: 1.4rem;
  display: block;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 64px;
  justify-content: flex-end;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col strong {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--gray);
  margin-bottom: 4px;
}

.footer-col a {
  font-size: 0.85rem;
  color: var(--gray-light);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--lime);
}

.footer-bottom {
  border-top: 1px solid var(--rule);
  padding: 20px 40px;
  max-width: 1280px;
  margin: 0 auto;
}

.footer-bottom p {
  font-size: 0.78rem;
  color: var(--gray);
}

/* ---- responsive ---- */

@media (max-width: 960px) {
  .hero h1 { font-size: 4.5rem; }

  .hero-speed-lines { display: none; }

  .hero-content { padding: 80px 24px 100px; }

  .features-grid { grid-template-columns: 1fr; }

  .split-banner-inner { grid-template-columns: 1fr; }

  .split-left { padding: 60px 24px; }

  .split-right { min-height: 200px; }

  .stats-grid { grid-template-columns: 1fr 1fr; }

  .stats::before { display: none; }

  .beta { padding: 80px 24px; }

  .beta-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 0 24px 48px;
  }

  .footer-links { justify-content: flex-start; }

  .footer-bottom { padding: 20px 24px; }

  .header-inner { padding: 0 24px; }

  .header-cta { display: none; }

  .section-intro { padding: 0 24px; }

  .features-grid { margin-left: 24px; margin-right: 24px; padding: 0; }

  .stats-grid { padding: 0 24px; }

  .site-footer::before { display: none; }

  .pace-strip-inner { justify-content: flex-start; padding: 0 24px; }
}

@media (max-width: 600px) {
  .hero h1 { font-size: 3.2rem; }

  .hero-content { padding: 60px 20px 80px; }

  .hero-actions { flex-direction: column; }

  .hero-actions .btn { text-align: center; width: 100%; }

  .stats-grid { grid-template-columns: 1fr; }

  .stat-number { font-size: 3rem; }

  .section-intro h2,
  .beta-left h2 { font-size: 2.4rem; }

  .split-left { padding: 48px 20px; }

  .footer-links { flex-direction: column; gap: 28px; }

  .main-nav { gap: 16px; }

  .main-nav a { font-size: 0.75rem; }

  .feature-card { padding: 36px 24px; }

  .header-inner { padding: 0 16px; }

  .beta { padding: 60px 16px; }

  .footer-inner { padding: 0 16px 40px; }

  .footer-bottom { padding: 16px; }
}