/* ==========================================================================
   Apex Stride - Performance Running (Mobile-Optimized)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;700;800;900&family=Space+Grotesk:wght@600;700;800&display=swap');

:root {
  --bg-black: #0d0e11;
  --bg-card: #15171d;
  --text-white: #ffffff;
  --text-gray: #9ca3af;
  --volt-neon: #d4ff00;
  --volt-glow: rgba(212, 255, 0, 0.4);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  background-color: var(--bg-black);
  color: var(--text-white);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  padding-bottom: 70px;
}

/* Universal Mobile-Friendly Floating Switcher */
.simple-switcher {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  background: rgba(18, 20, 26, 0.96);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 9999px;
  padding: 6px 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  max-width: 94vw;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.simple-switcher::-webkit-scrollbar {
  display: none;
}

.simple-switcher span {
  font-size: 0.7rem;
  color: #999;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 4px;
  font-weight: 700;
  white-space: nowrap;
}

.simple-switcher a {
  font-size: 0.75rem;
  color: #bbb;
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 9999px;
  transition: var(--transition);
  white-space: nowrap;
}

.simple-switcher a:hover {
  color: #fff;
}

.simple-switcher a.active {
  background: var(--volt-neon);
  color: #000;
  font-weight: 700;
}

/* Nav */
.stride-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 36px;
  background: rgba(13, 14, 17, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
}

.stride-brand {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 4vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #fff;
  text-decoration: none;
}

.stride-brand span {
  color: var(--volt-neon);
}

.stride-nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stride-nav-links a {
  color: var(--text-gray);
  text-decoration: none;
  transition: var(--transition);
}

.stride-nav-links a:hover {
  color: var(--volt-neon);
}

.btn-stride {
  padding: 12px 24px;
  border-radius: 9999px;
  font-weight: 800;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: var(--transition);
  border: none;
  text-align: center;
}

.btn-volt {
  background: var(--volt-neon);
  color: #000;
  box-shadow: 0 4px 20px var(--volt-glow);
}

.btn-volt:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--volt-glow);
  background: #e2ff33;
}

.btn-dark {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid var(--border-subtle);
}

.btn-dark:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Hero */
.stride-hero {
  max-width: 1300px;
  margin: 0 auto;
  padding: 60px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 40px;
  align-items: center;
}

.speed-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212, 255, 0, 0.1);
  border: 1px solid rgba(212, 255, 0, 0.3);
  padding: 6px 12px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--volt-neon);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}

.stride-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.stride-hero h1 span {
  color: var(--volt-neon);
}

.stride-hero p {
  color: var(--text-gray);
  font-size: clamp(0.95rem, 2.5vw, 1.15rem);
  margin-bottom: 30px;
  max-width: 500px;
}

.stride-cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-img-box {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0,0,0,0.8), 0 0 35px rgba(212, 255, 0, 0.15);
}

.hero-img-box img {
  width: 100%;
  height: auto;
  display: block;
}

/* Metrics Row */
.stride-metrics {
  background: #12141a;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 36px 20px;
}

.metrics-inner {
  max-width: 1300px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.metric-num {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--volt-neon);
  line-height: 1;
  margin-bottom: 6px;
}

.metric-lbl {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-gray);
}

/* Order / Sizing Section */
.stride-section {
  padding: 80px 24px;
  max-width: 1300px;
  margin: 0 auto;
}

.order-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: clamp(24px, 5vw, 50px);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.shoe-price {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3rem);
  font-weight: 800;
  color: var(--text-white);
  margin: 12px 0 20px;
}

.size-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: 8px;
  margin: 14px 0 24px;
}

.size-btn {
  padding: 10px 0;
  text-align: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: #fff;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.85rem;
  transition: var(--transition);
}

.size-btn:hover, .size-btn.active {
  background: var(--volt-neon);
  color: #000;
  border-color: var(--volt-neon);
}

/* Mobile Responsiveness */
@media (max-width: 860px) {
  .stride-nav { padding: 16px 20px; }
  .stride-nav-links { display: none; }
  .stride-hero { grid-template-columns: 1fr; padding: 40px 20px 60px; gap: 32px; }
  .metrics-inner { grid-template-columns: 1fr 1fr; gap: 24px 16px; }
  .order-box { grid-template-columns: 1fr; }
  .stride-cta-row { flex-direction: column; }
  .stride-cta-row .btn-stride { width: 100%; }
}