/* responsive.css — Mobile-First Breakpoints */

/* ── Tablet (≤ 1024px) ── */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--gap-xl);
  }

  .tutor-grid {
    grid-template-columns: 1fr;
    gap: var(--gap-xl);
  }

  .tutor-photo-placeholder {
    aspect-ratio: 3/2;
    max-width: 420px;
  }

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

  .course-card:last-child {
    grid-column: 1 / -1;
  }
}

/* ── Mobile (≤ 768px) ── */
@media (max-width: 768px) {
  /* Nav */
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    bottom: 0;
    width: 280px;
    background: var(--navy);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0.5rem;
    padding: 2rem;
    transition: right var(--transition);
    box-shadow: -4px 0 40px rgba(0,0,0,0.4);
    border-left: 1px solid var(--border-soft);
    z-index: 998;
  }

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

  .nav-link {
    font-size: var(--size-base);
    padding: 0.85rem 1.25rem;
    width: 100%;
  }

  .nav-cta {
    margin-top: 0.5rem;
    width: 100%;
    text-align: center;
  }

  /* Overlay when nav open */
  .nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 997;
  }

  .nav-overlay.show { display: block; }

  /* Sections */
  .section { padding: clamp(3rem, 8vw, 5rem) 0; }

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

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

  .course-card:last-child { grid-column: 1; }

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

  .reviews-grid .review-card:nth-child(4),
  .reviews-grid .review-card:nth-child(5) {
    grid-column: 1;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--gap-xl);
  }

  .contact-section .section-title,
  .contact-section .section-label {
    text-align: center;
  }

  .hero-stats {
    gap: var(--gap-sm);
    padding: 1.25rem;
  }

  .stat-divider { display: none; }

  .hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .tutor-photo-placeholder { aspect-ratio: 1/1; }

  .tutor-message blockquote { font-size: var(--size-base); }

  .contact-form-wrap { padding: 1.75rem; }

  .back-to-top { bottom: 1.25rem; right: 1.25rem; }
}

/* ── Small Mobile (≤ 480px) ── */
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; max-width: 300px; justify-content: center; }

  .footer-links { flex-direction: column; align-items: center; }

  .cert-badges { justify-content: center; }
}

/* ── Large (≥ 1280px) ── */
@media (min-width: 1280px) {
  .courses-grid { gap: var(--gap-lg); }
  .reviews-grid { gap: var(--gap-lg); }
}

/* ── Print ── */
@media print {
  .nav-wrapper, .hero-scroll-hint, .back-to-top { display: none; }
  .hero { min-height: auto; padding: 2rem 0; }
  .section { padding: 2rem 0; }
}

/* Fix for courses grid in mobile view */
@media (max-width: 768px) {
  .courses-grid[style*="grid-template-columns: repeat(2, minmax(0, 1fr))"] {
    grid-template-columns: 1fr !important;
    max-width: 100% !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }
}