/**
 * responsive.css
 * Media queries for all breakpoints.
 * All selectors match exact HTML class names in index.html / pages/*.html.
 *
 * Breakpoints:
 *   ≤ 1200px  — slight container breathing room
 *   ≤ 1024px  — tablet landscape
 *   ≤  768px  — mobile landscape / tablet portrait
 *   ≤  480px  — mobile portrait
 *   ≥ 1400px  — large desktop
 */

/* =====================
   ≤ 1200px
   ===================== */
@media (max-width: 1200px) {
  :root { --section-pad: 64px; }

  .solutions__radial { gap: 24px; }
  .solutions__center img { max-width: 260px; }

  .footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

/* =====================
   Tablet — ≤ 1024px
   ===================== */
@media (max-width: 1024px) {
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }

  section { padding: 60px 0; }

  /* Hero: stack on tablet */
  .hero__grid { grid-template-columns: 1fr; gap: 32px; }
  .hero__heading { font-size: var(--font-size-3xl); }
  .hero__subtext  { font-size: var(--font-size-base); }
  .hero__illustration { order: -1; }
  .hero__illustration img { max-width: 400px; }
  .navbar__call,
  .navbar__email { display: none; }

  /* Solutions: stack on tablet */
  .solutions__radial { grid-template-columns: 1fr; gap: 32px; }
  .solutions__col { flex-direction: row; gap: 24px; flex-wrap: wrap; justify-content: center; }
  .solutions__center { order: -1; }
  .solution-item--right { text-align: center; justify-content: center; flex-direction: column; align-items: center; }
  .solution-item--left { text-align: center; flex-direction: column; align-items: center; }

  /* Team: 2 columns */
  .team__grid { grid-template-columns: repeat(2, 1fr); }

  /* Process: wrap cards on tablet */
  .process__grid { flex-wrap: wrap; gap: 24px; }
  .process-card { max-width: 45%; min-width: 240px; }
  .process-card__connector { display: none; }

  /* Contact: smaller card */
  .contact__card { padding: 32px; }
  .contact-form__row { grid-template-columns: 1fr; }

  /* Partners */
  .partners__grid { grid-template-columns: repeat(2, 1fr); }

  /* Footer topbar */
  .footer__topbar-inner { flex-direction: column; align-items: flex-start; }
  .footer__topbar-contact { flex-direction: column; gap: 16px; }

  /* Footer: 2 columns */
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 24px; }

  /* Navbar: tighter gaps */
  .navbar__menu { gap: 16px; }
}

/* =====================
   Mobile Landscape — ≤ 768px
   ===================== */
@media (max-width: 768px) {
  :root {
    --section-pad:   48px;
    --container-pad: 16px;
  }

  /* ---------- Topbar: hide on small screens ---------- */
  .header__topbar { display: none; }

  /* ---------- Navbar ---------- */
  .navbar__hamburger { display: flex; }
  .navbar__call,
  .navbar__email { display: none !important; }

  /* Hide desktop menu; JS toggles .open class */
  .navbar__menu {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(300px, 85vw);
    background-color: var(--color-bg);
    box-shadow: var(--shadow-xl);
    padding: calc(var(--header-height) + 16px) 24px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    z-index: 9999;
    overflow-y: auto;
    list-style: none;
  }

  .navbar__menu.open { display: flex; }

  .navbar__item { width: 100%; }

  .navbar__link {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border-light);
    font-size: var(--font-size-base);
  }

  .navbar__link::after { display: none; }

  /* CTA link: reset button style in mobile menu */
  .navbar__link--cta {
    background: none;
    border: none;
    border-bottom: 1px solid var(--color-border-light);
    border-radius: 0;
    padding: 12px 0;
    color: var(--color-primary);
  }

  /* Dropdown: accordion style, toggled by JS adding .dropdown-open */
  .navbar__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: none;
    border-top: none;
    border-left: 3px solid var(--color-primary);
    padding-left: 16px;
    min-width: unset;
    display: none;
    top: auto;
  }

  .navbar__item--dropdown.dropdown-open .navbar__dropdown { display: block; }

  /* Backdrop (injected by JS) */
  .nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.45);
    z-index: 9998;
  }

  .nav-backdrop.visible { display: block; }

  /* ---------- Hero ---------- */
  .hero__heading  { font-size: var(--font-size-2xl); }
  .hero__subtext  { font-size: var(--font-size-sm); }
  .hero__actions  { flex-direction: column; align-items: center; }
  .hero__actions .btn { width: 100%; max-width: 280px; }

  /* ---------- Grids ---------- */
  .solutions__radial { grid-template-columns: 1fr; }
  .team__grid      { grid-template-columns: repeat(2, 1fr); }
  .process__grid { flex-wrap: wrap; }

  /* ---------- Section header ---------- */
  .section-header { margin-bottom: 32px; }

  /* ---------- Partners ---------- */
  .partners__grid { gap: 16px; }
  .partner-logo__box { width: 150px; height: 90px; }

  /* ---------- Contact ---------- */
  .contact__card     { padding: 24px; }
  .contact-form__row { grid-template-columns: 1fr; }

  /* ---------- Footer ---------- */
  .footer__grid  { grid-template-columns: 1fr; }
  .footer__bottom { text-align: center; }

  /* ---------- Page banner ---------- */
  .page-banner        { padding: 100px 0 48px; }
  .page-banner__title { font-size: var(--font-size-2xl); }

  /* ---------- Numbered items ---------- */
  .numbered-item {
    flex-direction: column;
    gap: 12px;
  }

  /* ---------- Back to top ---------- */
  .back-to-top { bottom: 20px; right: 20px; }
}

/* =====================
   Mobile Portrait — ≤ 480px
   ===================== */
@media (max-width: 480px) {
  h1 { font-size: var(--font-size-2xl); }
  h2 { font-size: var(--font-size-xl); }
  h3 { font-size: var(--font-size-lg); }

  section    { padding: 40px 0; }
  .container { padding-left: 12px; padding-right: 12px; }

  /* Hero */
  .hero__heading { font-size: 1.625rem; }
  .hero__eyebrow { font-size: 11px; letter-spacing: 2px; }

  /* Single column everywhere */
  .solutions__radial { grid-template-columns: 1fr; }
  .team__grid      { grid-template-columns: 1fr; }
  .process__grid { flex-direction: column; align-items: center; }
  .process-card { max-width: 100%; min-width: 0; }
  .process-card__connector { display: none; }

  /* Buttons: full width */
  .btn                { width: 100%; justify-content: center; }
  .hero__actions .btn { max-width: 100%; }

  /* Partners */
  .partners__grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .footer-partners__grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  /* Contact form */
  .contact__card { padding: 16px; }

  /* Numbered item number: scale down */
  .numbered-item__number { font-size: 36px; min-width: 48px; }

  /* Footer */
  .footer__main { padding: 40px 0 24px; }

  /* Section subtitle: tighter tracking */
  .section-subtitle { letter-spacing: 2px; }

  /* Page banner */
  .page-banner        { padding: 80px 0 40px; }
  .page-banner__title { font-size: var(--font-size-xl); }

  /* Skill bar labels */
  .skill-bar__label,
  .skill-bar__percent { font-size: 13px; }

  /* Footer partners */
  .footer-partners__grid { grid-template-columns: repeat(2, 1fr); }
}

/* =====================
   Large Desktop — ≥ 1400px
   ===================== */
@media (min-width: 1400px) {
  :root { --container-max: 1320px; }

  .hero__heading   { font-size: 3.5rem; }
  .solutions__radial { grid-template-columns: 1fr auto 1fr; }
  .team__grid      { grid-template-columns: repeat(4, 1fr); }
}