/* ===== RESET & BASE ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #1E5AA8;
  --primary-dark: #15407A;
  --accent: #E8B931;
  --accent-dark: #C9A02A;
  --bg: #F8F9FA;
  --text: #212529;
  --white: #FFFFFF;
  --shadow: 0 4px 20px rgba(0,0,0,0.1);
  --radius: 12px;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Open Sans', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
}

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

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

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

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

.header.scrolled {
  background: var(--white);
  box-shadow: var(--shadow);
  padding: 10px 0;
}

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

.logo {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition);
}

.logo .logo-icon {
  font-size: 1.8rem;
}

.header.scrolled .logo {
  color: var(--primary);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 28px;
  align-items: center;
}

.nav-links a {
  color: rgba(255,255,255,0.9);
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
  transition: color var(--transition);
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

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

.header.scrolled .nav-links a {
  color: var(--text);
}

.header.scrolled .nav-links a:hover,
.header.scrolled .nav-links a.active {
  color: var(--primary);
}

/* Language toggle */
.lang-toggle {
  display: flex;
  gap: 4px;
  background: rgba(255,255,255,0.15);
  border-radius: 20px;
  padding: 3px;
  transition: background var(--transition);
}

.header.scrolled .lang-toggle {
  background: var(--bg);
}

.lang-btn {
  border: none;
  background: transparent;
  color: rgba(255,255,255,0.7);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 5px 12px;
  border-radius: 16px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: 'Montserrat', sans-serif;
}

.lang-btn.active {
  background: var(--accent);
  color: var(--text);
}

.header.scrolled .lang-btn {
  color: var(--text);
}

.header.scrolled .lang-btn.active {
  background: var(--primary);
  color: var(--white);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

.header.scrolled .hamburger span {
  background: var(--text);
}

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

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

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

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, #0D2E5C 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 200%;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 40px,
    rgba(255,255,255,0.02) 40px,
    rgba(255,255,255,0.02) 80px
  );
  animation: heroStripes 20s linear infinite;
}

@keyframes heroStripes {
  from { transform: translateY(0); }
  to { transform: translateY(80px); }
}

.hero::after {
  content: '🎾';
  position: absolute;
  font-size: 20rem;
  opacity: 0.05;
  right: -2rem;
  bottom: -2rem;
}

.hero-content {
  position: relative;
  z-index: 1;
  color: var(--white);
  padding: 0 20px;
  animation: heroFadeIn 1s ease-out;
}

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 16px;
  letter-spacing: -1px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: 40px;
  opacity: 0.9;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: var(--text);
  padding: 16px 40px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1.1rem;
  font-family: 'Montserrat', sans-serif;
  transition: all var(--transition);
  box-shadow: 0 4px 15px rgba(232,185,49,0.4);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232,185,49,0.5);
}

/* ===== SECTION COMMON ===== */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
}

.section-header p {
  color: #6c757d;
  font-size: 1.1rem;
  margin-top: 16px;
}

/* ===== FADE IN ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== COURSES ===== */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.course-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.course-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary);
  transition: height var(--transition);
}

.course-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

.course-card:hover::before {
  height: 6px;
  background: var(--accent);
}

.course-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.course-card h3 {
  font-size: 1.3rem;
  color: var(--primary);
  margin-bottom: 12px;
}

.course-card p {
  font-size: 0.95rem;
  color: #6c757d;
  margin-bottom: 16px;
  line-height: 1.6;
}

.course-price {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--accent-dark);
  margin-bottom: 20px;
}

.btn-outline {
  display: inline-block;
  border: 2px solid var(--primary);
  color: var(--primary);
  padding: 10px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition);
  cursor: pointer;
  background: transparent;
  font-family: 'Open Sans', sans-serif;
}

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}

/* ===== COACHES ===== */
.coaches {
  background: var(--white);
}

.coaches-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.coach-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius);
  transition: all var(--transition);
  background: var(--bg);
}

.coach-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.coach-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--white);
  box-shadow: 0 4px 15px rgba(30,90,168,0.3);
}

.coach-card h3 {
  font-size: 1.3rem;
  margin-bottom: 6px;
  color: var(--text);
}

.coach-specialty {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.coach-experience {
  color: var(--accent-dark);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.coach-bio {
  color: #6c757d;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

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

.social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  transition: all var(--transition);
  font-weight: 700;
}

.social-link:hover {
  background: var(--accent);
  color: var(--text);
  transform: scale(1.1);
}

/* ===== GALLERY ===== */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  border: 2px solid var(--primary);
  background: transparent;
  color: var(--primary);
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: 'Open Sans', sans-serif;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--primary);
  color: var(--white);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.video-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

.video-thumbnail {
  width: 100%;
  height: 200px;
  position: relative;
  overflow: hidden;
}

.video-thumbnail-bg {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.video-thumbnail-bg.technique {
  background: linear-gradient(135deg, #1E5AA8, #2980b9);
}

.video-thumbnail-bg.match {
  background: linear-gradient(135deg, #27ae60, #2ecc71);
}

.video-thumbnail-bg.training {
  background: linear-gradient(135deg, #e67e22, #f39c12);
}

.video-play-btn {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: var(--accent);
  color: var(--text);
  border: none;
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: 'Open Sans', sans-serif;
}

.video-play-btn:hover {
  background: var(--accent-dark);
  transform: scale(1.05);
}

.video-info {
  padding: 16px;
}

.video-info h4 {
  font-size: 1rem;
  color: var(--text);
}

/* Video modal */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.video-modal.open {
  display: flex;
}

.modal-content {
  background: var(--white);
  border-radius: var(--radius);
  max-width: 700px;
  width: 100%;
  overflow: hidden;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--primary);
  color: var(--white);
}

.modal-header h3 {
  font-size: 1.1rem;
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}

.modal-body {
  padding: 60px 20px;
  text-align: center;
  color: #6c757d;
  font-size: 1rem;
  background: var(--bg);
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
}

.modal-body .play-icon {
  font-size: 4rem;
  opacity: 0.4;
}

/* ===== CONTACT ===== */
.contact {
  background: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  padding: 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius);
  color: var(--white);
}

.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 24px;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.info-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.info-item p {
  font-size: 0.95rem;
  opacity: 0.9;
  line-height: 1.5;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  position: relative;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 1rem;
  font-family: 'Open Sans', sans-serif;
  transition: border-color var(--transition);
  background: var(--bg);
  color: var(--text);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group input.input-error,
.form-group select.input-error,
.form-group textarea.input-error {
  border-color: #e74c3c;
}

.form-error {
  color: #e74c3c;
  font-size: 0.8rem;
  margin-top: 4px;
  display: block;
}

.contact-form .btn-primary {
  align-self: flex-start;
  padding: 14px 48px;
}

/* ===== FOOTER ===== */
.footer {
  background: #0D2E5C;
  color: rgba(255,255,255,0.8);
  padding: 60px 0 24px;
}

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

.footer-brand .logo {
  color: var(--white);
  margin-bottom: 12px;
  font-size: 1.3rem;
}

.footer-brand p {
  font-size: 0.9rem;
  opacity: 0.7;
  line-height: 1.6;
}

.footer h4 {
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: 0.9rem;
  opacity: 0.7;
  transition: opacity var(--transition), color var(--transition);
}

.footer-links a:hover {
  opacity: 1;
  color: var(--accent);
}

.footer-social {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  color: var(--text);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .courses-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h1 {
    font-size: 3rem;
  }

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

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

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 20px;
    transition: right var(--transition);
    box-shadow: -4px 0 20px rgba(0,0,0,0.15);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    color: var(--text) !important;
    font-size: 1.1rem;
  }

  .lang-toggle {
    background: var(--bg) !important;
  }

  .lang-btn {
    color: var(--text) !important;
  }

  .lang-btn.active {
    background: var(--primary) !important;
    color: var(--white) !important;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

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

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

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

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

  .section {
    padding: 60px 0;
  }

  .section-header h2 {
    font-size: 2rem;
  }

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

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

  .contact-form .btn-primary {
    align-self: stretch;
  }
}