:root {
  --bg: #0f1115;
  --bg-surface: rgba(255, 255, 255, 0.04);
  --text-main: #f0f0f0;
  --text-muted: rgba(255, 255, 255, 0.5);
  --accent: #ffb020;
  --accent-rgb: 255, 176, 32;
  --accent-2: #4fd1c5;
  --accent-2-rgb: 79, 209, 197;
  --danger: #ef5350;
  --border-color: rgba(255, 255, 255, 0.08);
  --glass-blur: blur(24px);
}

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

body {
  background-color: var(--bg);
  color: var(--text-main);
  font-family: "Satoshi", "Segoe UI", system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}

a { color: inherit; }

.glow-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
}

.glow-1 { top: -10%; left: -12%; width: 55vw; height: 55vw; background: rgba(var(--accent-rgb), 0.07); }
.glow-2 { bottom: 5%; right: -12%; width: 45vw; height: 45vw; background: rgba(var(--accent-2-rgb), 0.05); }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- NAV --- */
nav.site-nav {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 16px 0;
  background: rgba(15, 17, 21, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text-main);
}

.nav-logo .valve-dots {
  display: inline-flex;
  gap: 4px;
}

.nav-logo .valve-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}
.nav-logo .valve-dots span:nth-child(1) { background: var(--danger); }
.nav-logo .valve-dots span:nth-child(2) { background: var(--accent-2); }
.nav-logo .valve-dots span:nth-child(3) { background: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.nav-links a { text-decoration: none; transition: color 0.2s ease; }
.nav-links a:hover { color: var(--text-main); }

.nav-cta {
  background: var(--accent);
  color: #201a08;
  text-decoration: none;
  padding: 9px 20px;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 700;
  transition: all 0.25s ease;
  box-shadow: 0 4px 24px rgba(var(--accent-rgb), 0.28);
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 36px rgba(var(--accent-rgb), 0.42);
  filter: brightness(1.06);
}

/* --- HERO --- */
.hero {
  padding: 150px 0 90px;
  min-height: 92vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
}

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.badge-pill {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(var(--accent-rgb), 0.1);
  border: 1px solid rgba(var(--accent-rgb), 0.28);
  color: var(--accent);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 22px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero h1 {
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  line-height: 1.12;
  font-weight: 900;
  margin-bottom: 22px;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.hero h1 .accent-word { color: var(--accent); }

.hero p.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 34px;
  max-width: 520px;
}

.btn-glow {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  border-radius: 100px;
  background: var(--accent);
  color: #201a08;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.02rem;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 24px rgba(var(--accent-rgb), 0.28);
}
.btn-glow:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 36px rgba(var(--accent-rgb), 0.42);
}
.btn-glow::before {
  content: "";
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: left 0.5s ease;
}
.btn-glow:hover::before { left: 100%; }

.btn-secondary-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 26px;
  border-radius: 100px;
  border: 1px solid rgba(var(--accent-rgb), 0.25);
  background: rgba(var(--accent-rgb), 0.06);
  color: var(--text-main);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.98rem;
  transition: all 0.25s ease;
}
.btn-secondary-pill:hover {
  border-color: rgba(var(--accent-rgb), 0.4);
  background: rgba(var(--accent-rgb), 0.1);
  transform: translateY(-2px);
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* --- hero visual: floating piston stack --- */
.hero-visual {
  perspective: 1400px;
  display: grid;
  place-items: center;
}

.piston-stage {
  position: relative;
  width: min(360px, 80vw);
  display: flex;
  justify-content: center;
  gap: 30px;
  padding: 40px 0;
}

.piston-stage .valve {
  width: 64px;
  height: 168px;
  animation: floatY 5.5s ease-in-out infinite;
}
.piston-stage .valve:nth-child(2) { animation-delay: 0.4s; }
.piston-stage .valve:nth-child(3) { animation-delay: 0.8s; }

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

/* --- FEATURES --- */
.features { padding: 90px 0; }

.section-heading {
  text-align: center;
  margin-bottom: 46px;
}
.section-heading h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 900;
  margin-bottom: 12px;
}
.section-heading p {
  color: var(--text-muted);
  font-size: 1.02rem;
  max-width: 560px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 22px;
}

.glass-card {
  position: relative;
  background: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 28px;
  transition: all 0.35s ease;
}
.glass-card:hover {
  transform: translateY(-5px);
  border-color: rgba(var(--accent-rgb), 0.3);
  background: rgba(var(--accent-rgb), 0.035);
  box-shadow: 0 16px 40px rgba(var(--accent-rgb), 0.07);
}

.icon-box {
  width: fit-content;
  padding: 6px 12px;
  background: rgba(var(--accent-rgb), 0.1);
  border: 1px solid rgba(var(--accent-rgb), 0.22);
  border-radius: 8px;
  margin-bottom: 18px;
  font-size: 0.78rem;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.glass-card h3 { font-size: 1.12rem; margin-bottom: 8px; font-weight: 700; }
.glass-card p { color: var(--text-muted); line-height: 1.55; font-size: 0.93rem; }

/* --- CTA BOX --- */
.cta-section { padding: 90px 0; }
.cta-box {
  background: rgba(var(--accent-rgb), 0.03);
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  border-radius: 28px;
  padding: 56px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(circle at center, rgba(var(--accent-rgb), 0.05) 0%, transparent 50%);
  pointer-events: none;
}
.cta-box h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 14px; font-weight: 900; }
.cta-box p { color: var(--text-muted); margin-bottom: 28px; font-size: 1.05rem; max-width: 600px; margin-left: auto; margin-right: auto; }

/* --- FOOTER --- */
footer.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 34px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
}
footer.site-footer a { text-decoration: none; color: var(--text-muted); }
footer.site-footer a:hover { color: var(--accent); }

/* --- TRACK CARDS (training page) --- */
.track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.track-card {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  transition: all 0.3s ease;
  text-decoration: none;
  display: block;
}
.track-card:hover {
  transform: translateY(-6px);
  border-color: rgba(var(--accent-rgb), 0.32);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.35);
}

.track-cover {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  background: #1a1e26;
}

.track-info { padding: 20px; }
.track-info .track-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(var(--accent-rgb), 0.12);
  padding: 4px 10px;
  border-radius: 100px;
  margin-bottom: 10px;
}
.track-info h3 { font-size: 1.15rem; margin-bottom: 6px; }
.track-info p { color: var(--text-muted); font-size: 0.88rem; line-height: 1.5; }
.track-meta {
  display: flex;
  gap: 14px;
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.track-card-empty {
  border: 1px dashed var(--border-color);
  border-radius: 20px;
  padding: 40px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.92rem;
}