/* ===== responsive.css ===== */

/* ============================================================
   RESPONSIVE.CSS
   — Tablet:      ≤ 1024px
   — Mobile:      ≤ 768px
   — Small:       ≤ 480px
   ============================================================ */


/* ══════════════════════════════════════════════════════════
   BURGER MENU — мобильная навигация
══════════════════════════════════════════════════════════ */

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}

.burger span {
  display: block;
  height: 1.5px;
  background: var(--black);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
  transform-origin: center;
}

.burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255,255,255,0.98);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 100px 40px 40px;
}

.nav-mobile-menu.open {
  display: flex;
}

.nav-mobile-menu a {
  font-family: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  font-size: 36px;
  font-weight: 300;
  color: var(--black);
  text-decoration: none;
  letter-spacing: -0.5px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  width: 100%;
  text-align: center;
  transition: color 0.2s;
}

.nav-mobile-menu a:last-child {
  border-bottom: none;
}

.nav-mobile-menu a:hover,
.nav-mobile-menu a.active {
  color: var(--gold);
}


/* ══════════════════════════════════════════════════════════
   TABLET  (≤ 1024px)
══════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {

  nav { padding: 18px 32px; }
  nav.scrolled { padding: 12px 32px; }
  .nav-links { gap: 20px; }
  .nav-links a { font-size: 13px; }

  .hero-left { padding: 60px 32px; }
  .hero-right { padding: 40px 32px; }
  .hero-bar-item { padding: 18px 16px; font-size: 13px; }

  #portfolio { padding: 60px 0; }
  .portfolio-header { padding: 0 32px 36px; grid-template-columns: 1fr; gap: 20px; }
  .portfolio-desc { text-align: left; margin-left: 0; }
  .champion-row { padding: 20px 32px; grid-template-columns: 44px 1fr 180px 110px 80px; gap: 12px; }
  .champion-row.hdr { padding: 14px 32px; }
  .ch-expand-row { padding: 16px 32px; }

  #coaches { padding: 60px 32px; }
  .coaches-header { grid-template-columns: 1fr; gap: 20px; }
  .coaches-intro { margin-left: 0; max-width: 100%; }

  #services { padding: 60px 32px; }
  .services-header { grid-template-columns: 1fr; gap: 20px; }
  .services-intro { margin-left: 0; }
  .service-row { grid-template-columns: 40px 1fr auto; gap: 24px; padding: 28px 20px; }

  #contact { padding: 60px 32px; }
  .contact-grid { gap: 60px; }

  footer { padding: 28px 32px; }
}


/* ══════════════════════════════════════════════════════════
   MOBILE  (≤ 768px)
══════════════════════════════════════════════════════════ */
@media (max-width: 768px) {

  body { cursor: auto; }
  .cursor, .cursor-ring { display: none; }
  .btn, .form-submit, .ch-expand-btn, .burger { cursor: pointer; }

  /* Nav */
  nav { padding: 14px 20px; }
  nav.scrolled { padding: 12px 20px; }
  .nav-logo img { height: 56px !important; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .burger { display: flex; }

  /* Hero */
  .hero-main { grid-template-columns: 1fr; padding-top: 84px; }
  .hero-left { padding: 40px 20px 36px; border-right: none; border-bottom: 1px solid var(--line); }
  .hero-title { font-size: clamp(40px, 11vw, 68px); margin-bottom: 24px; }
  .hero-sub { font-size: 16px; margin-bottom: 32px; }
  .hero-actions { flex-direction: column; align-items: flex-start; gap: 14px; }
  .hero-right { padding: 36px 20px; }
  .chess-deco { width: 160px; height: 160px; }
  .hero-piece { font-size: 130px; }
  .stat { padding: 18px 0; }
  .stat-n { font-size: 42px; }
  .hero-bar { flex-wrap: wrap; }
  .hero-bar-item { flex: 1 1 50%; padding: 13px 16px; font-size: 13px; }
  .hero-bar-item:nth-child(2n) { border-right: none; }

  /* Portfolio — таблица → карточки */
  #portfolio { padding: 48px 0; }
  .portfolio-header { padding: 0 20px 28px; }
  .display { font-size: clamp(36px, 10vw, 60px); }

  .champion-row.hdr { display: none !important; }

  .champion-row,
  .champion-row.top {
    display: flex !important;
    flex-direction: column !important;
    gap: 3px !important;
    padding: 16px 20px !important;
    border-bottom: 1px solid var(--line) !important;
    position: relative !important;
  }

  /* Скрытые строки — приоритет выше чем .champion-row */
  .champion-row.ch-extra:not(.open) {
    display: none !important;
  }
  .ch-extra.open {
    display: flex !important;
    flex-direction: column !important;
    gap: 3px !important;
    padding: 16px 20px !important;
    border-bottom: 1px solid var(--line) !important;
    position: relative !important;
    animation: rowIn .4s cubic-bezier(.25,.46,.45,.94) both;
  }

  .ch-num {
    position: absolute !important;
    top: 16px !important;
    right: 20px !important;
    font-size: 18px !important;
    color: var(--muted) !important;
  }
  .champion-row.top .ch-num { color: var(--gold) !important; }

  .ch-name { font-size: 20px !important; padding-right: 44px !important; margin-bottom: 2px !important; }
  .ch-award { display: block !important; font-size: 14px !important; color: var(--muted) !important; }
  .champion-row.top .ch-award { color: var(--gold) !important; }

  .ch-rating {
    display: block !important;
    font-size: 15px !important;
    color: var(--black) !important;
  }
  .ch-rating::before {
    content: 'FIDE: ';
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 11px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--muted);
  }

  .ch-age { display: block !important; font-size: 13px !important; color: var(--muted) !important; text-align: left !important; }
  .ch-expand-row { padding: 13px 20px; }

  /* Coaches */
  #coaches { padding: 48px 20px; }
  .coaches-grid { grid-template-columns: 1fr; }
  .coach-card { padding: 32px 22px; }

  /* Services */
  #services { padding: 48px 20px; }
  #services::before { font-size: 220px; right: -20px; bottom: -20px; }
  .service-row { grid-template-columns: 1fr; gap: 10px; padding: 24px 16px; }
  .s-num { font-size: 22px; padding-top: 0; }
  .s-price { text-align: left; padding-top: 0; }
  .s-name { font-size: 24px; }

  /* Contact */
  #contact { padding: 48px 20px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; margin-top: 32px; }
  .contact-desc { font-size: 16px; margin-bottom: 28px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }

  /* Footer */
  footer { padding: 24px 20px; flex-direction: column; align-items: flex-start; gap: 14px; }
  .footer-links { gap: 16px; flex-wrap: wrap; }
}


/* ══════════════════════════════════════════════════════════
   SMALL MOBILE  (≤ 480px)
══════════════════════════════════════════════════════════ */
@media (max-width: 480px) {

  nav { padding: 12px 16px; }
  .nav-logo img { height: 46px !important; }

  .hero-left { padding: 32px 16px 28px; }
  .hero-title { font-size: clamp(34px, 11vw, 52px); }
  .hero-right { padding: 28px 16px; }
  .hero-bar-item { flex: 1 1 100%; border-right: none; border-bottom: 1px solid var(--line); padding: 11px 16px; }
  .hero-bar-item:last-child { border-bottom: none; }

  .portfolio-header { padding: 0 16px 22px; }
  .champion-row,
  .champion-row.top,
  .ch-extra.open {
    padding: 14px 16px !important;
  }
  .ch-expand-row { padding: 12px 16px; }

  #coaches { padding: 36px 16px; }
  .coach-card { padding: 26px 16px; }
  .coach-num { font-size: 54px; top: 22px; right: 16px; }

  #services { padding: 36px 16px; }
  .service-row { padding: 20px 10px; }

  #contact { padding: 36px 16px; }

  footer { padding: 20px 16px; }
}