/* ==========================================================================
   RESPONSIVE RULES
   Breakpoints: 1180px (nav → mobile menu), 1024px (laptop/tablet),
                768px (tablet portrait), 560px (phones), 380px (small phones)
   ========================================================================== */

html { scroll-behavior: smooth; }

/* Large laptops: switch to the mobile menu (8 nav links need room) */
@media (max-width: 1180px) {
  .nav-toggle { display: inline-block; }
  .header__cta { display: none; }

  .nav {
    position: fixed;
    inset: 0;
    z-index: 110;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: calc(var(--header-h) + 24px) var(--gutter) 32px;
    background:
      radial-gradient(600px circle at 100% 0%, rgba(10, 56, 125, 0.55), transparent 60%),
      rgba(11, 17, 34, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    opacity: 0;
    visibility: hidden;
    clip-path: circle(0% at calc(100% - 44px) 38px);
    transition: clip-path 0.7s var(--ease-io), opacity 0.4s, visibility 0s 0.7s;
    overflow-y: auto;
  }
  .nav-open .nav {
    opacity: 1;
    visibility: visible;
    clip-path: circle(150% at calc(100% - 44px) 38px);
    transition: clip-path 0.7s var(--ease-io), opacity 0.2s, visibility 0s;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    max-width: 560px;
    margin-inline: auto;
  }
  .nav__list li {
    border-bottom: 1px solid var(--line);
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s, transform 0.5s var(--ease-out);
  }
  .nav-open .nav__list li { opacity: 1; transform: none; }
  .nav-open .nav__list li:nth-child(1) { transition-delay: 0.15s; }
  .nav-open .nav__list li:nth-child(2) { transition-delay: 0.19s; }
  .nav-open .nav__list li:nth-child(3) { transition-delay: 0.23s; }
  .nav-open .nav__list li:nth-child(4) { transition-delay: 0.27s; }
  .nav-open .nav__list li:nth-child(5) { transition-delay: 0.31s; }
  .nav-open .nav__list li:nth-child(6) { transition-delay: 0.35s; }
  .nav-open .nav__list li:nth-child(7) { transition-delay: 0.39s; }
  .nav-open .nav__list li:nth-child(8) { transition-delay: 0.43s; }

  .nav__link {
    display: flex;
    width: 100%;
    gap: 16px;
    padding: 14px 4px;
    font-family: var(--f-display);
    font-size: clamp(1.5rem, 5.5vw, 2.1rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    text-transform: none;
  }
  .nav__num { display: inline; font-family: var(--f-mono); }
  .nav__link[aria-current="page"] { color: var(--c-sky); }
  .nav__indicator { display: none; }

  .nav__footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    max-width: 560px;
    margin: 28px auto 0;
    font-family: var(--f-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-faint);
  }
  .nav__footer a { color: var(--c-sky); word-break: break-all; }

  body.nav-open { overflow: hidden; }

  /* backdrop-filter on the header would trap the fixed menu inside it,
     so it is removed while the menu is open */
  .nav-open .site-header,
  .nav-open .site-header.is-scrolled {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: transparent;
    border-bottom-color: transparent;
  }
  .nav-open .logo { position: relative; z-index: 120; }
}

/* Laptops / tablets landscape */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .case-layout { grid-template-columns: 1fr; }
  .case-aside { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .project-card--featured { grid-template-columns: 1fr; }
  .project-card--featured .project-card__media { aspect-ratio: 16 / 9; min-height: 0; }

  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }

  .shape--ring { right: 6%; }
}

/* Tablets portrait */
@media (max-width: 860px) {
  /* side-slide reveals become vertical so nothing pokes out of the screen */
  .js [data-reveal="left"]:not(.is-revealed),
  .js [data-reveal="right"]:not(.is-revealed) { transform: translateY(32px); }

  .hero { min-height: auto; padding-top: calc(var(--header-h) + 56px); }
  .hero__inner { grid-template-columns: 1fr; gap: 56px; }
  .hero__visual { order: -1; }
  .hero__title { max-width: 16ch; }
  .portrait { width: min(78vw, 340px); }
  .hero__hud { display: none; }

  .split { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .section-head--split { grid-template-columns: 1fr; }
  .cta-band__inner { grid-template-columns: 1fr; align-items: start; }
  .project-grid { grid-template-columns: 1fr; }
  .skill-row { grid-template-columns: 1fr; gap: 16px; }

  .shape--cube { right: 4%; top: 18%; width: 64px; height: 64px; }
  .shape--cube .cube__face:nth-child(1) { transform: rotateY(0deg) translateZ(32px); }
  .shape--cube .cube__face:nth-child(2) { transform: rotateY(90deg) translateZ(32px); }
  .shape--cube .cube__face:nth-child(3) { transform: rotateY(180deg) translateZ(32px); }
  .shape--cube .cube__face:nth-child(4) { transform: rotateY(-90deg) translateZ(32px); }
  .shape--cube .cube__face:nth-child(5) { transform: rotateX(90deg) translateZ(32px); }
  .shape--cube .cube__face:nth-child(6) { transform: rotateX(-90deg) translateZ(32px); }
  .shape--ring { width: 160px; height: 160px; top: 4%; right: -40px; opacity: 0.6; }
  .shape--orb { width: 100px; height: 100px; opacity: 0.6; }
  .shape--diamond { display: none; }
}

/* Phones */
@media (max-width: 560px) {
  :root { --header-h: 66px; }
  body { font-size: 1rem; }

  .grid-2, .grid-3, .grid-4, .process, .gallery { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .case-aside { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }

  .btn-row { flex-direction: column; align-items: stretch; }
  .btn-row .btn { width: 100%; }
  .hero__content > .btn-row { justify-self: stretch; }

  .portrait__chip { font-size: 0.68rem; padding: 8px 10px; }
  .portrait__chip--a { left: -4%; bottom: 8%; }
  .portrait__chip--b { right: -4%; top: 36%; }
  .portrait__corner { display: none; }

  .terminal-line { font-size: 0.7rem; padding: 7px 12px; }
  .info-list li { flex-direction: column; gap: 4px; }
  .info-list span:last-child { text-align: left; }
  .case-nav { flex-direction: column; }
  .timeline { padding-left: 32px; }
  .timeline__dot { left: -32px; width: 20px; height: 20px; }
  .timeline::before, .timeline__progress { left: 9px; }
  .resume-toolbar .btn-row { width: 100%; }
  .cv__head { flex-direction: column-reverse; }
}

@media (max-width: 380px) {
  :root { --notch: 8px; }
  .logo__text { display: none; }
  .hero__meta { font-size: 0.7rem; }
}

/* Touch devices: no hover-tilt, larger hit areas */
@media (hover: none) {
  [data-tilt] { transform: none !important; }
  .nav__link { min-height: 44px; }
}

/* Print: show the resume cleanly */
@media print {
  .site-header, .site-footer, .bg-layers, .scroll-progress, .page-hero, .resume-toolbar, .cta-section, .skip-link, .page-transition { display: none !important; }
  body { background: #fff; }
  .section { padding: 0 !important; }
  .cv { box-shadow: none; border-radius: 0; padding: 0; max-width: none; }
  main { animation: none; }
  .js [data-reveal] { opacity: 1 !important; transform: none !important; }
}

@page { size: A4; margin: 14mm 16mm; }