/* =====================
   ROOT & GLOBAL
===================== */

:root {
  --primary: #16a34a;
  --primary-dark: #15803d;
  --dark: #0f172a;
  --light: #ffffff;
  --muted: #6b7280;
  --bg-light: #f8fafc;
  --border: #e5e7eb;
  --radius: 16px;
  --transition: 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Poppins", sans-serif;
  background: var(--light);
  color: var(--dark);
  line-height: 1.7;
}

/* =====================
   NAVBAR
===================== */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 16px 8%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.5px;
}

nav {
  display: flex;
  align-items: center;
}

nav a {
  margin: 0 16px;
  text-decoration: none;
  color: var(--dark);
  font-weight: 500;
  position: relative;
}

nav a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

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

.nav-cta {
  margin-left: 16px;
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* =====================
   HAMBURGER
===================== */

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  width: 26px;
  height: 3px;
  background: var(--dark);
  border-radius: 2px;
}

/* =====================
   HERO
===================== */

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  padding: 90px 8% 70px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  font-weight: 700;
  line-height: 1.2;
}

.hero p {
  margin-top: 16px;
  color: var(--muted);
  max-width: 480px;
}

.hero-buttons {
  margin-top: 30px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-buttons button,
.hero-buttons a {
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 500;
  border: none;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
}

.hero-buttons button {
  background: var(--primary);
  color: #fff;
}

.hero-buttons button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(22,163,74,0.25);
}

.hero-buttons a {
  color: var(--primary);
}

.hero-buttons a:hover {
  text-decoration: underline;
}

.hero-image img {
  width: 100%;
  border-radius: var(--radius);
  object-fit: cover;
  transition: var(--transition);
}

.hero-image img:hover {
  transform: scale(1.03);
}

/* =====================
   STATS
===================== */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 35px 8%;
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.stats div {
  transition: var(--transition);
}

.stats div:hover {
  transform: translateY(-4px);
}

.stats strong {
  font-size: 24px;
  display: block;
}

.stats span {
  color: var(--muted);
  font-size: 14px;
}

/* =====================
   ABOUT
===================== */

.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  padding: 90px 8%;
  align-items: center;
}

.about img {
  width: 100%;
  border-radius: var(--radius);
  transition: var(--transition);
}

.about img:hover {
  transform: scale(1.04);
}

.about h2 {
  font-size: clamp(1.8rem, 3vw, 2.2rem);
  margin-bottom: 16px;
}

.about p {
  color: var(--muted);
}

.about ul {
  margin-top: 20px;
  list-style: none;
}

.about li {
  margin-bottom: 12px;
  padding-left: 22px;
  position: relative;
}

.about li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: var(--primary);
}

/* =====================
   PROGRAMS
===================== */

.programs {
  padding: 90px 8%;
}

.programs h2 {
  text-align: center;
  font-size: clamp(2rem, 3vw, 2.4rem);
  margin-bottom: 50px;
}

.program-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 30px;
}

.program-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.program-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.08);
}

.program-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.program-card h3 {
  padding: 18px;
  font-size: 18px;
}

/* =====================
   TRAINER
===================== */

.trainer {
  padding: 90px 8%;
  background: var(--bg-light);
}

.trainer h2 {
  text-align: center;
  margin-bottom: 50px;
}

.trainer-box {
  max-width: 900px;
  margin: auto;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
  align-items: center;
}

.trainer-box img {
  width: 100%;
  border-radius: var(--radius);
  transition: var(--transition);
}

.trainer-box img:hover {
  transform: scale(1.05);
}

/* =====================
   PRICING
===================== */

.pricing {
  padding: 90px 8%;
}

.pricing h2 {
  text-align: center;
  margin-bottom: 50px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 26px;
}

.price-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 36px 30px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.price-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 45px rgba(0,0,0,0.08);
}

.price-card.featured {
  border: 2px solid var(--primary);
  box-shadow: 0 15px 40px rgba(22,163,74,0.25);
}

.price-card p {
  font-size: 24px;
  font-weight: 600;
}

/* =====================
   CTA
===================== */

.cta {
  background: var(--dark);
  color: white;
  text-align: center;
  padding: 80px 8%;
}

.cta h2 {
  margin-bottom: 24px;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.cta button {
  background: var(--primary);
  border: none;
  padding: 14px 26px;
  border-radius: 8px;
  color: #fff;
  cursor: pointer;
  transition: var(--transition);
}

.cta button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* =====================
   MODAL
===================== */

.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  justify-content: center;
  align-items: center;
}

.modal-box {
  background: white;
  padding: 30px;
  border-radius: 14px;
  width: 90%;
  max-width: 360px;
}

/* =====================
   RESPONSIVE
===================== */

@media (max-width: 900px) {
  .hero,
  .about,
  .trainer-box {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-buttons {
    justify-content: center;
  }

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

  nav {
    position: absolute;
    top: 72px;
    right: 0;
    background: #fff;
    width: 100%;
    display: none;
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border);
  }

  nav.active {
    display: flex;
  }

  nav a {
    margin: 12px 0;
  }

  .nav-cta {
    margin: 12px 0 0;
  }

  .hamburger {
    display: flex;
  }
}

@media (max-width: 480px) {
  .navbar { padding: 14px 5%; }
  .hero,
  .about,
  .programs,
  .trainer,
  .pricing,
  .cta { padding: 70px 5%; }
  .stats { padding: 25px 5%; }
}