:root {
  --bg-main: #050816;
  --bg-alt: #070b1f;
  --accent: #22c55e;
  --accent-soft: rgba(34, 197, 94, 0.15);
  --accent-strong: #4ade80;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --glass-bg: rgba(15, 23, 42, 0.7);
  --glass-border: rgba(148, 163, 184, 0.4);
  --radius-lg: 18px;
  --radius-full: 999px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.75);
}

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

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #1d293b 0, #020617 50%, #000 100%);
  color: var(--text-primary);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
}

/* Layout helpers */
.wrap {
  width: 92%;
  max-width: 1120px;
  margin: 0 auto;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.9), transparent);
  border-bottom: 1px solid rgba(148, 163, 184, 0.3);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-logo {
  font-size: 1.4rem;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-weight: 700;
  letter-spacing: 0.03em;
  font-size: 1rem;
}

.brand-sub {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.nav {
  display: flex;
  gap: 1.2rem;
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-bottom: 0.2rem;
  position: relative;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(to right, var(--accent), var(--accent-strong));
  transition: width 0.25s ease;
}

.nav a:hover {
  color: var(--text-primary);
}

.nav a:hover::after {
  width: 100%;
}

/* Hero */
.hero {
  position: relative;
  padding: 5rem 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: -120px -160px auto;
  background:
    radial-gradient(circle at 10% 20%, rgba(244, 63, 94, 0.2), transparent 55%),
    radial-gradient(circle at 80% 0%, rgba(34, 197, 94, 0.2), transparent 60%),
    radial-gradient(circle at 90% 80%, rgba(59, 130, 246, 0.3), transparent 55%);
  opacity: 0.9;
  z-index: -1;
}

.hero-grid {
  display: grid;
  gap: 2rem;
}

.hero-left {
  padding: 1.9rem 1.7rem;
}

.hero-left h1 {
  font-size: clamp(2.1rem, 4vw, 2.7rem);
  margin: 0 0 1rem;
  letter-spacing: 0.02em;
}

.hero-left p {
  margin: 0 0 1.4rem;
  color: var(--text-secondary);
  max-width: 32rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  font-size: 0.8rem;
  color: var(--accent-strong);
  opacity: 0.9;
}

.hero-right {
  padding: 1.4rem 1.3rem;
}

.stat h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.stat p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.divider {
  height: 1px;
  margin: 1.2rem 0;
  background: linear-gradient(to right, transparent, rgba(148, 163, 184, 0.6), transparent);
}

/* Glass card */
.glass {
  background: radial-gradient(circle at top left, rgba(148, 163, 184, 0.18), rgba(15, 23, 42, 0.92));
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
}

/* Buttons */
.btn {
  border-radius: var(--radius-full);
  padding: 0.6rem 1.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.14s ease, box-shadow 0.14s ease, background 0.14s ease, border-color 0.14s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #020617;
  box-shadow: 0 14px 30px rgba(34, 197, 94, 0.55);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(34, 197, 94, 0.65);
}

.btn-ghost {
  border-color: rgba(148, 163, 184, 0.7);
  color: var(--text-primary);
  background: rgba(15, 23, 42, 0.7);
}

.btn-ghost:hover {
  background: rgba(15, 23, 42, 0.95);
}

.btn-secondary {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-strong);
}

.btn-secondary:hover {
  background: rgba(34, 197, 94, 0.25);
}

.btn.full {
  width: 100%;
}

.btn.small {
  padding-inline: 1rem;
  font-size: 0.8rem;
}

/* Sections */
.section {
  padding: 3.5rem 0;
}

.section-dark {
  background: radial-gradient(circle at top, #020617 0, #020617 40%, #000 100%);
}

.section-soft {
  background: radial-gradient(circle at top, rgba(34, 197, 94, 0.1), #020617 60%);
}

.section-head {
  text-align: left;
  margin-bottom: 2rem;
}

.section-head h2 {
  font-size: 1.6rem;
  margin: 0 0 0.4rem;
}

.section-head p {
  margin: 0;
  color: var(--text-secondary);
  max-width: 32rem;
}

/* Cards grid */
.cards-grid {
  display: grid;
  gap: 1.4rem;
}

.card {
  padding: 1.5rem 1.4rem;
}

.card h3 {
  margin: 0 0 0.7rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0 0 0.6rem;
  color: var(--text-secondary);
}

.card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.card li + li {
  margin-top: 0.3rem;
}

/* Training */
.training-grid {
  display: grid;
  gap: 1.4rem;
}

/* About */
.about-grid {
  display: grid;
  gap: 1.6rem;
  align-items: start;
}

.about-grid p {
  color: var(--text-secondary);
}

/* Contact */
.contact-grid {
  display: grid;
  gap: 1.6rem;
}

.contact-card p {
  margin: 0 0 0.4rem;
  font-size: 0.9rem;
}

.form {
  display: grid;
  gap: 0.8rem;
}

.form label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: grid;
  gap: 0.3rem;
}

.form input,
.form textarea,
.form select {
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  padding: 0.5rem 0.6rem;
  font-size: 0.9rem;
  background: rgba(15, 23, 42, 0.9);
  color: var(--text-primary);
}

.form input:focus,
.form textarea:focus,
.form select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: transparent;
}

.note {
  margin-top: 0.7rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Footer */
.footer {
  border-top: 1px solid rgba(31, 41, 55, 0.9);
  background: #020617;
  padding: 1.1rem 0;
}

.footer-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* Responsive */
@media (min-width: 720px) {
  .hero-grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
    align-items: stretch;
  }

  .cards-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .training-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .about-grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  }

  .contact-grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2.5fr);
  }
}

@media (max-width: 640px) {
  .nav {
    display: none;
  }

  .hero {
    padding-top: 4.3rem;
  }

  .card {
    padding: 1.25rem 1.1rem;
  }
}