/* ========== CSS VARIABLES ========== */
    :root {
      --primary: #e63946;
      --primary-dark: #c62828;
      --primary-light: #ff5252;
      --secondary: #1a1a2e;
      --secondary-light: #16213e;
      --gold: #f4a460;
      --dark: #0f0f1a;
      --text-light: #ffffff;
      --text-dark: #1a1a2e;
      --text-muted: #b0b0c0;
      --bg-dark: #0f0f1a;
      --bg-card: #1a1a2e;
      --shadow: 0 10px 40px rgba(0,0,0,0.3);
      --shadow-hover: 0 20px 60px rgba(230,57,70,0.25);
      --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
      --border-radius: 16px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: 'Inter', sans-serif;
      background: #283618;
      color: white;
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: white;
    }

    img {
      max-width: 100%;
      display: block;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    section {
      padding: 80px 0;
    }

    /* ========== BUTTONS ========== */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: #064789;
      color: #fff;
      padding: 14px 36px;
      border: none;
      border-radius: 50px;
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      transition: var(--transition);
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-3px);
      box-shadow: 0 10px 30px rgba(230,57,70,0.4);
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: #064789;
      color: #fff;
      padding: 14px 36px;
      border: 2px solid var(--primary);
      border-radius: 50px;
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      transition: var(--transition);
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .btn-secondary:hover {
      background: var(--primary);
      transform: translateY(-3px);
      box-shadow: 0 10px 30px rgba(230,57,70,0.3);
    }

    /* ========== SECTION TITLES ========== */
    .section-title {
      font-size: 2.8rem;
      font-weight: 900;
      text-align: center;
      margin-bottom: 12px;
      letter-spacing: -1px;
    }

    .section-title span {
      color: white;
    }

    .section-subtitle {
      text-align: center;
      color: white;
      font-size: 1.1rem;
      max-width: 600px;
      margin: 0 auto 50px;
    }

    /* ========== HEADER / NAVBAR ========== */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      padding: 16px 0;
      transition: var(--transition);
      background: #16425b;
    }

    .header.scrolled {
      background: #2f6690;
      backdrop-filter: blur(20px);
      box-shadow: 0 4px 30px rgba(0,0,0,0.3);
      padding: 12px 0;
    }

    .header .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .logo {
      font-size: 1.8rem;
      font-weight: 900;
      letter-spacing: -1px;
    }

    .logo span {
      color: #00b4d8;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 30px;
      list-style: none;
    }

    .nav-menu a {
      font-weight: 600;
      font-size: 0.95rem;
      transition: var(--transition);
      position: relative;
    }

    .nav-menu a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: #00b4d8;
      transition: var(--transition);
    }

    .nav-menu a:hover::after,
    .nav-menu a.active::after {
      width: 100%;
    }

    .nav-menu a:hover {
      color: #00b4d8;
    }

    .nav-cta {
      background: #00b4d8;
      padding: 10px 24px;
      border-radius: 50px;
      font-weight: 700;
      transition: var(--transition);
    }

    .nav-cta:hover {
      background: white;
      transform: translateY(-2px);
    }

    .nav-cta::after {
      display: none !important;
    }

    /* Mobile Menu */
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      padding: 5px;
    }

    .hamburger span {
      width: 28px;
      height: 3px;
      background: #fff;
      border-radius: 3px;
      transition: var(--transition);
    }

    .hamburger.active span:nth-child(1) {
      transform: rotate(45deg) translate(5px, 6px);
    }

    .hamburger.active span:nth-child(2) {
      opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
      transform: rotate(-45deg) translate(5px, -6px);
    }

    /* ========== HERO SECTION ========== */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background: #3a7ca5;
      position: relative;
      overflow: hidden;
      padding-top: 80px;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: -50%;
      right: -20%;
      width: 70%;
      height: 140%;
      background: #81c3d7;
      pointer-events: none;
    }

    .hero .container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      position: relative;
      z-index: 1;
    }

    .hero-content h1 {
      font-size: 4rem;
      font-weight: 900;
      line-height: 1.1;
      margin-bottom: 20px;
      letter-spacing: -2px;
    }

    .hero-content h1 span {
      color: black;
    }

    .hero-content p {
      font-size: 1.2rem;
      color: black;
      margin-bottom: 30px;
      max-width: 500px;
    }

    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .hero-stats {
      display: flex;
      gap: 40px;
      margin-top: 40px;
    }

    .hero-stats .stat h3 {
      font-size: 2.2rem;
      font-weight: 800;
      color: black;
    }

    .hero-stats .stat p {
      font-size: 0.85rem;
      color: white;
      margin: 0;
    }

    .hero-image {
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .hero-image img {
      width: 100%;
      max-width: 500px;
      border-radius: 30px;
      box-shadow: 0 30px 60px rgba(230,57,70,0.2);
      object-fit: cover;
      aspect-ratio: 1;
    }

    /* ========== ABOUT SECTION ========== */
    .about {
      background: #3a7ca5;
    }

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

    .about-image img {
      width: 100%;
      border-radius: var(--border-radius);
      box-shadow: var(--shadow);
      aspect-ratio: 1.2;
      object-fit: cover;
    }

    .about-content h2 {
      font-size: 2.8rem;
      font-weight: 900;
      margin-bottom: 16px;
    }

    .about-content h2 span {
      color: black;
    }

    .about-content p {
      color: black;
      margin-bottom: 20px;
      font-size: 1.05rem;
    }

    .about-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 20px;
    }

    .about-features .feature {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 600;
    }

    .about-features .feature i {
      color: black;
      font-size: 1.2rem;
    }

    /* ========== TRAINERS SECTION ========== */
    .trainers {
      background: #3a7ca5;
    }

    .trainers-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 30px;
    }

    .trainer-card {
      background: #16425b;
      border-radius: var(--border-radius);
      padding: 30px 20px;
      text-align: center;
      transition: var(--transition);
      border: 1px solid rgba(255,255,255,0.05);
    }

    .trainer-card:hover {
      transform: translateY(-10px);
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
    }

    .trainer-card .avatar {
      width: 120px;
      height: 120px;
      border-radius: 50%;
      margin: 0 auto 16px;
      overflow: hidden;
    }

    .trainer-card .avatar img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .trainer-card h4 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .trainer-card p {
      color: white;
      font-size: 0.9rem;
      margin-bottom: 12px;
    }

    .trainer-card .social-links {
      display: flex;
      justify-content: center;
      gap: 12px;
    }

    .trainer-card .social-links a {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: black;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
    }

    .trainer-card .social-links a:hover {
      background: #81c3d7;
      transform: translateY(-3px);
    }

    /* ========== CLASSES SECTION ========== */
    .classes {
      background: #3a7ca5;
    }

    .classes-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
    }

    .class-card {
      background: #16425b;
      border-radius: var(--border-radius);
      padding: 30px;
      transition: var(--transition);
      border: 1px solid rgba(255,255,255,0.05);
      text-align: center;
    }

    .class-card:hover {
      transform: translateY(-8px);
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
    }

    .class-card .icon {
      font-size: 3rem;
      color: #81c3d7;
      margin-bottom: 16px;
    }

    .class-card h4 {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .class-card p {
      color: white;
      font-size: 0.95rem;
      margin-bottom: 12px;
    }

    .class-card .meta {
      display: flex;
      justify-content: center;
      gap: 20px;
      font-size: 0.85rem;
      color: white;
    }

    .class-card .meta i {
      color: #81c3d7;
      margin-right: 4px;
    }

    /* ========== PRICING SECTION ========== */
    .pricing {
      background: #3a7ca5;
    }

    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
    }

    .pricing-card {
      background: #023047;
      border-radius: var(--border-radius);
      padding: 40px 30px;
      text-align: center;
      transition: var(--transition);
      border: 1px solid rgba(255,255,255,0.05);
      position: relative;
    }

    .pricing-card.featured {
      border-color: var(--primary);
      transform: scale(1.02);
      box-shadow: var(--shadow-hover);
    }

    .pricing-card.featured .badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: black;
      padding: 4px 16px;
      border-radius: 50px;
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
    }

    .pricing-card:hover {
      transform: translateY(-8px);
      border-color: var(--primary);
    }

    .pricing-card.featured:hover {
      transform: scale(1.02) translateY(-8px);
    }

    .pricing-card h4 {
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .pricing-card .price {
      font-size: 3rem;
      font-weight: 900;
      color: #8ecae6;
      margin: 16px 0;
    }

    .pricing-card .price span {
      font-size: 1rem;
      font-weight: 400;
      color: white;
    }

    .pricing-card ul {
      list-style: none;
      margin: 20px 0;
    }

    .pricing-card ul li {
      padding: 8px 0;
      color: white;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }

    .pricing-card ul li i {
      color: #8ecae6;
      margin-right: 8px;
    }

    /* ========== BMI CALCULATOR ========== */
    .bmi {
      background: #3a7ca5;
    }

    .bmi-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .bmi-form .form-group {
      margin-bottom: 16px;
    }

    .bmi-form label {
      display: block;
      font-weight: 600;
      margin-bottom: 6px;
      font-size: 0.9rem;
    }

    .bmi-form input,
    .bmi-form select {
      width: 100%;
      padding: 14px 18px;
      border-radius: 10px;
      border: 1px solid rgba(255,255,255,0.1);
      background: #023047;
      color: #fff;
      font-size: 1rem;
      transition: var(--transition);
    }

    .bmi-form input:focus,
    .bmi-form select:focus {
      outline: none;
      border-color: var(--primary);
    }

    .bmi-result {
      text-align: center;
      padding: 30px;
      background: #023047;
      border-radius: var(--border-radius);
      border: 1px solid rgba(255,255,255,0.05);
    }

    .bmi-result .bmi-value {
      font-size: 4rem;
      font-weight: 900;
      color: #8ecae6;
    }

    .bmi-result .bmi-category {
      font-size: 1.2rem;
      font-weight: 600;
      margin-top: 8px;
    }

    .bmi-result .bmi-desc {
      color: white;
      margin-top: 8px;
    }

    /* ========== GALLERY ========== */
    .gallery {
      background: #16425b;
    }

    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
    }

    .gallery-item {
      aspect-ratio: 1;
      border-radius: var(--border-radius);
      overflow: hidden;
      transition: var(--transition);
      cursor: pointer;
    }

    .gallery-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .gallery-item:hover img {
      transform: scale(1.08);
    }

    .gallery-item:hover {
      box-shadow: var(--shadow-hover);
    }

    /* ========== TESTIMONIALS ========== */
    .testimonials {
      background: #16425b;
    }

    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
    }

    .testimonial-card {
      background: #8ecae6;
      border-radius: var(--border-radius);
      padding: 30px;
      border: 1px solid rgba(255,255,255,0.05);
      transition: var(--transition);
    }

    .testimonial-card:hover {
      transform: translateY(-5px);
      border-color: var(--primary);
    }

    .testimonial-card .stars {
      color: black;
      margin-bottom: 12px;
    }

    .testimonial-card blockquote {
      font-size: 1.05rem;
      font-style: italic;
      color: black;
      margin-bottom: 16px;
    }

    .testimonial-card .author {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .testimonial-card .author .avatar {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #16425b;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.2rem;
    }

    .testimonial-card .author .name {
      font-weight: 700;
    }

    .testimonial-card .author .role {
      font-size: 0.85rem;
      color: black;
    }

    /* ========== CONTACT ========== */
    .contact {
      background: #3a7ca5;
    }

    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
    }

    .contact-info h3 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .contact-info p {
      color: black;
      margin-bottom: 24px;
    }

    .contact-info .info-item {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 16px;
    }

    .contact-info .info-item i {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: white;
      display: flex;
      align-items: center;
      justify-content: center;
      color: black;
      font-size: 1.2rem;
    }

    .contact-form input,
    .contact-form textarea {
      width: 100%;
      padding: 14px 18px;
      border-radius: 10px;
      border: 1px solid rgba(255,255,255,0.1);
      background: #16425b;
      color: white;
      font-size: 1rem;
      transition: var(--transition);
      margin-bottom: 16px;
      font-family: 'Inter', sans-serif;
    }

    .contact-form textarea {
      min-height: 140px;
      resize: vertical;
    }

    .contact-form input:focus,
    .contact-form textarea:focus {
      outline: none;
      border-color: var(--primary);
    }

    .contact-form .btn-primary {
      width: 100%;
      justify-content: center;
    }

    /* ========== FOOTER ========== */
    .footer {
      background: #10002b;
      padding: 60px 0 20px;
      border-top: 1px solid rgba(255,255,255,0.05);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand h3 {
      font-size: 1.8rem;
      font-weight: 900;
      margin-bottom: 12px;
    }

    .footer-brand h3 span {
      color: white;
    }

    .footer-brand p {
      color: white;
      max-width: 300px;
    }

    .footer-links h4 {
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-links ul {
      list-style: none;
    }

    .footer-links ul li {
      margin-bottom: 10px;
    }

    .footer-links ul li a {
      color: white;
      transition: var(--transition);
    }

    .footer-links ul li a:hover {
      color: white;
    }

    .footer-social {
      display: flex;
      gap: 12px;
      margin-top: 16px;
    }

    .footer-social a {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #16425b;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
    }

    .footer-social a:hover {
      background: #8ecae6;
      transform: translateY(-3px);
    }

    .footer-bottom {
      text-align: center;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,0.05);
      color: white;
      font-size: 0.9rem;
    }

    /* ========== RESPONSIVE DESIGN ========== */
    @media (max-width: 992px) {
      .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
      }

      .hero-content p {
        margin: 0 auto 30px;
      }

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

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

      .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
      }

      .about-features {
        justify-content: center;
      }

      .bmi-wrapper {
        grid-template-columns: 1fr;
      }

      .contact-wrapper {
        grid-template-columns: 1fr;
      }

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

      .pricing-card.featured {
        transform: scale(1);
      }

      .pricing-card.featured:hover {
        transform: translateY(-8px);
      }
    }

    @media (max-width: 768px) {
      .hamburger {
        display: flex;
      }

      .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 320px;
        height: 100vh;
        background: var(--secondary);
        flex-direction: column;
        padding: 80px 30px 30px;
        transition: var(--transition);
        gap: 20px;
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
      }

      .nav-menu.active {
        right: 0;
      }

      .nav-menu a {
        font-size: 1.1rem;
      }

      .hero-content h1 {
        font-size: 2.8rem;
      }

      .section-title {
        font-size: 2.2rem;
      }

      .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
      }

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

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

      .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
      }

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

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

      .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
      }

      .footer-brand p {
        margin: 0 auto;
      }

      .footer-social {
        justify-content: center;
      }

      section {
        padding: 60px 0;
      }
    }

    @media (max-width: 480px) {
      .hero-content h1 {
        font-size: 2.2rem;
      }

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

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

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

      .hero-buttons {
        flex-direction: column;
        align-items: center;
      }

      .btn-primary,
      .btn-secondary {
        width: 100%;
        justify-content: center;
      }

      .pricing-card.featured {
        transform: scale(1);
      }
    }