/* ============ 4K / LARGE DESKTOP (1920px+) ============ */
@media (min-width: 1920px) {
  html { font-size: 18px; }
  .hero, .features, .footer-content {
    max-width: 1600px;
  }
}

/* ============ DESKTOP (1200px - 1919px) ============ */
@media (max-width: 1199px) {
  .navbar { padding: 1.25rem 2.5rem; }
  .hero { padding: 4rem 2.5rem; gap: 3rem; }
  .features { padding: 4rem 2.5rem; }
  footer { padding: 2rem 2.5rem; }
}

/* ============ TABLET LANDSCAPE (992px - 1024px) ============ */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .badge, .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .buttons {
    justify-content: center;
  }

  .phone {
    max-width: 300px;
  }

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

  .feature-card.wide {
    grid-column: span 2;
  }
}

/* ============ TABLET PORTRAIT (768px - 991px) ============ */
@media (max-width: 991px) {
  .navbar {
    padding: 1rem 2rem;
  }

  .hero {
    padding: 3rem 2rem;
  }

  .features {
    padding: 3rem 2rem;
  }

  footer {
    padding: 2rem;
  }
}

/* ============ MOBILE LANDSCAPE (600px - 767px) ============ */
@media (max-width: 767px) {
  /* Show hamburger, hide desktop menu */
  .hamburger {
    display: flex;
  }

  .desktop-only {
    display: none;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 300px;
    height: 100vh;
    background: rgba(10,10,15,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transition: right 0.4s ease;
    border-left: 1px solid rgba(255,255,255,0.1);
  }

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

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

  .mobile-only {
    display: block;
  }

  .navbar {
    padding: 1rem 1.5rem;
  }

  .hero {
    padding: 2rem 1.5rem;
    gap: 2.5rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-desc {
    font-size: 1rem;
  }

  .buttons {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
  }

  .btn-primary,
  .btn-outline {
    width: 100%;
    padding: 0.9rem 1.5rem;
  }

  .phone {
    max-width: 280px;
    min-height: 500px;
  }

  .features {
    padding: 2rem 1.5rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .feature-card.wide {
    grid-column: span 1;
  }

  footer {
    padding: 2rem 1.5rem;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

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

/* ============ SMALL MOBILE (up to 480px) ============ */
@media (max-width: 480px) {
  html { font-size: 15px; }

  .navbar {
    padding: 0.9rem 1rem;
  }

  .logo {
    font-size: 1.15rem;
    gap: 0.5rem;
  }

  .logo-img {
    width: 30px;
    height: 30px;
  }

  .hero {
    padding: 1.5rem 1rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .badge {
    font-size: 0.65rem;
    padding: 0.4rem 0.8rem;
  }

  .hero-desc {
    font-size: 0.95rem;
  }

  .phone {
    max-width: 260px;
    padding: 1.25rem;
    min-height: 460px;
  }

  .avatar {
    width: 36px;
    height: 36px;
  }

  .name {
    font-size: 0.8rem;
  }

  .days {
    font-size: 0.65rem;
  }

  .features {
    padding: 2rem 1rem;
  }

  .section-header h2 {
    font-size: 1.8rem;
  }

  .feature-card {
    padding: 1.25rem;
  }

  .feature-card h3 {
    font-size: 1rem;
  }

  .feature-card p {
    font-size: 0.85rem;
  }

  footer {
    padding: 1.5rem 1rem;
  }

  .footer-links {
    gap: 1rem;
    font-size: 0.8rem;
  }
}

/* ============ EXTRA SMALL (up to 360px) ============ */
@media (max-width: 360px) {
  .hero h1 {
    font-size: 1.75rem;
  }

  .phone {
    max-width: 240px;
  }
  .logo-text {
    display: none;
  }

  .btn-primary,
  .btn-outline {
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
  }
}

/* ============ LANDSCAPE MOBILE ============ */
@media (max-height: 500px) and (orientation: landscape) {
  .hero {
    grid-template-columns: 1fr 1fr;
    text-align: left;
    padding: 2rem;
  }

  .nav-links {
    justify-content: flex-start;
    padding-top: 4rem;
  }
}

/* ============ TOUCH DEVICE ============ */
@media (hover: none) {
  .btn-primary:hover,
  .btn-outline:hover,
  .feature-card:hover {
    transform: none;
  }
}

/* ============ HIGH DPI / RETINA ============ */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}