/* ===================================
   MOBILE NAVIGATION
   =================================== */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 101;
  transition: all var(--transition-normal);
  -webkit-tap-highlight-color: transparent;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-normal);
  box-shadow: 0 0 10px rgba(0, 200, 255, 0.3);
  display: block;
}

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

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-20px);
}

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

.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(4, 14, 22, 0.95);
  backdrop-filter: var(--blur-strong);
  -webkit-backdrop-filter: var(--blur-strong);
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.mobile-menu-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: min(280px, 85vw);
  height: 100dvh;
  background: var(--bg-glass);
  backdrop-filter: var(--blur-strong);
  -webkit-backdrop-filter: var(--blur-strong);
  border-left: 1px solid var(--glass-border);
  z-index: 100;
  padding: 80px 28px 32px;
  transition: right var(--transition-slow) cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: -10px 0 50px rgba(0, 200, 255, 0.1);
  overflow-y: auto;
}

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

.mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-menu a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 17px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 10px;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.mobile-menu a:active {
  background: var(--glass-hover);
  border-color: var(--glass-border);
  color: var(--accent-cyan-light);
}

.mobile-menu a::before {
  content: '▸';
  color: var(--accent-cyan);
  font-size: 18px;
  flex-shrink: 0;
}

/* ===================================
   TABLET — 769px–1024px
   =================================== */
@media (min-width: 769px) and (max-width: 1024px) {
  nav { padding: 16px 32px; }
  nav.scrolled { padding: 10px 32px; }
  .hero { padding: 110px 40px 70px; }
  .hero h1 { font-size: clamp(36px, 5vw, 56px); }
  .skills-section, .contact-section { padding: 80px 40px; }
  .about-section { padding: 80px 40px; gap: 48px; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .mobile-menu-toggle { display: flex; }
  .mobile-menu, .mobile-menu-overlay { display: block; }
  .nav-links { display: none; }
  .nav-logo { font-size: 15px; }

  .hero-tag { font-size: 12px; padding: 5px 13px; margin-bottom: 20px; }
  .hero h1 { font-size: clamp(26px, 7vw, 40px); line-height: 1.2; margin-bottom: 16px; }
  .hero-sub { font-size: 15px; line-height: 1.65; margin-bottom: 28px; }
  .hero-contacts { flex-direction: column; gap: 10px; }
  .contact-btn {
    width: 100%; justify-content: center;
    padding: 14px 20px; font-size: 15px; border-radius: 10px;
    touch-action: manipulation; -webkit-tap-highlight-color: transparent;
  }

  .section-title { font-size: clamp(22px, 5vw, 30px); margin-bottom: 36px; }
  .section-label { font-size: 12px; margin-bottom: 8px; }

  .skills-grid { grid-template-columns: 1fr; gap: 14px; }
  .skill-card { padding: 20px 18px; border-radius: 14px; }
  .skill-card-title { font-size: 11px; margin-bottom: 12px; }
  .skill-tags { gap: 7px; }
  .tag { font-size: 12px; padding: 5px 11px; }

  .about-text .section-label, .about-text .section-title { text-align: left; }
  .about-text p { font-size: 15px; line-height: 1.75; margin-bottom: 14px; }

  .stat-card { padding: 18px 14px; border-radius: 12px; }
  .stat-number { font-size: 26px; }
  .stat-label { font-size: 11px; margin-top: 4px; }

  .contact-form-wrapper { padding: 24px 0; max-width: 100%; }
  .contact-form { padding: 22px 18px; border-radius: 14px; }
  .form-group { margin-bottom: 18px; }
  .form-group label { font-size: 13px; margin-bottom: 6px; }
  .form-group input, .form-group textarea {
    padding: 12px 13px; font-size: 16px; border-radius: 8px;
  }
  .form-group textarea { min-height: 110px; }
  .form-submit-btn { padding: 14px 20px; font-size: 15px; border-radius: 10px; }
  .contact-links { flex-direction: column; align-items: stretch; gap: 10px; }
}

/* ===================================
   SMALL MOBILE — ≤480px
   =================================== */
@media (max-width: 480px) {
  nav { padding: 10px 16px; }
  .nav-logo { font-size: 14px; }

  .hero {
    padding: 80px 16px 36px;
    padding-top: max(80px, calc(env(safe-area-inset-top, 0px) + 70px));
  }

  .hero h1 { font-size: clamp(24px, 8vw, 36px); }
  .hero-sub { font-size: 14px; }
  .contact-btn { font-size: 14px; padding: 13px 16px; }

  .skills-section, .contact-section { padding: 48px 16px 32px; }
  .about-section { padding: 48px 16px 32px; }
  .section-title { font-size: clamp(20px, 6vw, 28px); margin-bottom: 28px; }

  .skill-card { padding: 18px 16px; }
  .tag { font-size: 11px; padding: 4px 10px; }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card { padding: 16px 12px; }
  .stat-number { font-size: 22px; }
  .stat-label { font-size: 11px; }

  .contact-form { padding: 18px 14px; }
  .form-group input, .form-group textarea { font-size: 16px; padding: 11px 12px; }
  .contact-links { gap: 8px; }

  footer {
    padding: 16px;
    padding-bottom: max(16px, calc(env(safe-area-inset-bottom, 0px) + 12px));
  }
}

/* ===================================
   VERY SMALL — ≤360px (старые Android)
   =================================== */
@media (max-width: 360px) {
  .hero h1 { font-size: 22px; }
  .hero-tag { font-size: 11px; padding: 4px 11px; }
  .section-title { font-size: 19px; }
  .contact-btn { padding: 12px 14px; font-size: 13px; gap: 6px; }
  .tag { font-size: 10px; padding: 4px 9px; }
  .stat-number { font-size: 20px; }
  .skill-card { padding: 16px 14px; }
  .mobile-menu { width: 90vw; padding: 70px 20px 24px; }
}

/* ===================================
   LANDSCAPE MOBILE — высота < 500px
   =================================== */
@media (max-height: 500px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding: 70px 20px 32px;
  }

  .hero h1 { font-size: clamp(22px, 4vh, 36px); margin-bottom: 10px; }
  .hero-sub { font-size: 14px; margin-bottom: 20px; }

  .hero-contacts { flex-direction: row; flex-wrap: wrap; }

  .contact-btn {
    width: auto;
    flex: 1 1 calc(50% - 6px);
    min-width: 120px;
    padding: 10px 14px;
    font-size: 13px;
  }

  .mobile-menu { padding-top: 56px; }
}

/* ===================================
   TOUCH DEVICE IMPROVEMENTS
   =================================== */
@media (hover: none) and (pointer: coarse) {
  .skill-card:hover,
  .stat-card:hover,
  .tag:hover,
  .glow-on-hover:hover {
    transform: none;
  }

  .contact-btn.primary:hover {
    transform: none;
    box-shadow: 0 0 20px rgba(124, 58, 237, 0.4);
  }

  .contact-btn.secondary:hover { transform: none; }

  .contact-btn:active {
    opacity: 0.85;
    transform: scale(0.98);
  }

  .skill-card:active { border-color: var(--accent-cyan); }
  .tag:active { border-color: var(--accent-cyan); color: var(--accent-cyan-light); }
}