/* Eudai · mobile.css — responsive layer. Loaded LAST, after styles/pages/articles.
   Breakpoints: 1024 (tablet), 860 (nav → hamburger), 680 (phone, single column). */

/* ============================================================
   HAMBURGER + MOBILE DRAWER  (hidden on desktop by default)
   ============================================================ */
.eu-burger { display: none; }
.eu-mobile-nav { display: none; }

@media (max-width: 860px) {
  .eu-header { gap: 16px; padding: 12px 20px; }
  .eu-header-nav,
  .eu-header-actions { display: none; }

  .eu-burger {
    display: inline-flex; flex-direction: column; justify-content: center; gap: 5px;
    margin-left: auto;
    width: 44px; height: 44px;
    padding: 0; border: 0; background: transparent; cursor: pointer;
    position: relative; z-index: 70;
  }
  .eu-burger span {
    display: block; width: 24px; height: 2px; margin: 0 auto;
    background: var(--eudai-navy); border-radius: 2px;
    transition: transform 220ms var(--ease-out), opacity 160ms var(--ease-out);
  }
  .eu-burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .eu-burger.is-open span:nth-child(2) { opacity: 0; }
  .eu-burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .eu-mobile-nav {
    display: flex; flex-direction: column; justify-content: space-between;
    position: fixed; inset: 0; z-index: 60;
    background: #fff;
    padding: 88px 28px 36px;
    opacity: 0; pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 220ms var(--ease-out), transform 220ms var(--ease-out);
  }
  .eu-mobile-nav.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .eu-mobile-nav-links { display: flex; flex-direction: column; gap: 4px; }
  .eu-mobile-nav-links a {
    font: 800 30px/1.1 var(--font-display);
    letter-spacing: -0.03em;
    color: var(--fg-1); text-decoration: none;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-subtle);
  }
  .eu-mobile-nav-links a:active { color: var(--eudai-orange); }
  .eu-mobile-nav-foot { display: flex; flex-direction: column; gap: 18px; }
  .eu-mobile-nav-foot .eu-btn { width: 100%; justify-content: center; }
  .eu-mobile-nav-row { display: flex; align-items: center; justify-content: space-between; }
  .eu-mobile-nav-email {
    font: 600 15px/1 var(--font-mono);
    color: var(--fg-2); text-decoration: none;
  }
}

/* ============================================================
   TABLET  ≤ 1024px
   ============================================================ */
@media (max-width: 1024px) {
  .eu-blog-grid { grid-template-columns: repeat(2, 1fr); }
  .eu-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .eu-services-grid { grid-template-columns: 1fr; }
  .eu-engagement-grid { grid-template-columns: 1fr; max-width: 640px; }
  .eu-awards-grid { grid-template-columns: repeat(2, 1fr); }

  /* featured project stacks earlier */
  .eu-project.is-featured { flex-direction: column; }
  .eu-project.is-featured .eu-project-art { width: 100%; height: 200px; }

  .eu-hero-title { font-size: 68px; }
  .eu-h2 { font-size: 46px; }
  .eu-page-hero-title { font-size: 56px; }
}

/* ============================================================
   PHONE  ≤ 680px
   ============================================================ */
@media (max-width: 680px) {

  /* ---- Section padding: tighten side gutters + vertical rhythm ---- */
  .eu-hero { padding: 64px 20px 56px; }
  .eu-trusted { padding: 40px 20px 44px; }
  .eu-profile,
  .eu-projects,
  .eu-services,
  .eu-personas,
  .eu-problem { padding: 64px 20px; }
  .eu-testimonials,
  .eu-stats { padding: 64px 20px; }
  .eu-blog { padding: 64px 20px; }
  .eu-cta { padding: 80px 20px; }
  .eu-footer { padding: 56px 20px 32px; }

  .eu-page-hero { padding: 64px 20px 48px; }
  .eu-work-featured { padding: 48px 20px 40px; }
  .eu-work-grid-section { padding: 40px 20px 72px; }
  .eu-svc-detail { padding: 48px 20px 64px; }
  .eu-engagement { padding: 64px 20px 80px; }
  .eu-about-hero { padding: 56px 20px; }
  .eu-about-practice,
  .eu-awards,
  .eu-network { padding: 64px 20px; }
  .eu-writing-featured { padding: 48px 20px 32px; }
  .eu-writing-filter { padding: 20px 20px 0; }
  .eu-writing-grid-section { padding: 24px 20px 72px; }
  .eu-contact { padding: 48px 20px 80px; }

  /* ---- Type scale ---- */
  .eu-hero-title { font-size: clamp(34px, 10vw, 46px); line-height: 1.02; }
  .eu-hero-sub { font-size: 17px; }
  .eu-hero-title .eu-hl { white-space: normal; }
  .eu-h2 { font-size: 32px; line-height: 1.06; }
  .eu-section-head { margin-bottom: 40px; }
  .eu-section-sub { font-size: 16px; }
  .eu-page-hero-title { font-size: 38px; line-height: 1.04; }
  .eu-page-hero-sub { font-size: 17px; }
  .eu-about-title { font-size: 34px; }
  .eu-about-lede { font-size: 16px; }
  .eu-profile-copy .eu-h2 { font-size: 30px; }
  .eu-svc-detail-title { font-size: 30px; }
  .eu-work-title,
  .eu-writing-feature-title { font-size: 27px; }
  .eu-persona-title { font-size: 26px; }
  .eu-stat-num { font-size: 42px; }
  .eu-network-body { font-size: 16px; }

  /* ---- Grids → single column ---- */
  .eu-projects-grid { grid-template-columns: 1fr; }
  .eu-project.is-featured { grid-column: auto; }
  .eu-project.is-featured .eu-project-art { height: 160px; }
  .eu-project-art { height: 150px; }
  .eu-project-body { padding: 24px 22px; }

  .eu-testimonials-grid { grid-template-columns: 1fr; }
  .eu-blog-grid { grid-template-columns: 1fr; }
  .eu-stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .eu-stat { padding: 22px 18px; }
  .eu-bubbles { grid-template-columns: 1fr; }

  .eu-profile-grid { grid-template-columns: 1fr; gap: 32px; }
  .eu-profile-slot { max-width: 360px; }

  .eu-persona-panel { grid-template-columns: 1fr; gap: 28px; padding: 28px 22px; }
  .eu-tabs { width: 100%; overflow-x: auto; justify-content: flex-start; }

  /* Services cards: stack body over mock */
  .eu-service { grid-template-columns: 1fr; gap: 20px; padding: 26px; min-height: 0; }
  .eu-service-mock { min-height: 150px; }

  /* Footer */
  .eu-footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; }
  .eu-footer-brand { grid-column: 1 / -1; }
  .eu-footer-base { flex-direction: column; gap: 8px; margin-top: 40px; text-align: left; }

  /* ---- Work page ---- */
  .eu-work-featured-card { grid-template-columns: 1fr; }
  .eu-work-art { min-height: 200px; padding: 40px 24px; }
  .eu-work-body { padding: 28px 24px; }
  .eu-work-grid { grid-template-columns: 1fr; }

  /* ---- Services page ---- */
  .eu-svc-detail-row { grid-template-columns: 1fr; gap: 28px; padding: 44px 0; }
  .eu-svc-deliv { padding: 24px; }

  /* ---- About page ---- */
  .eu-about-hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .eu-about-hero-r .eu-profile-slot { max-width: 320px; }
  .eu-about-cta { flex-wrap: wrap; }
  .eu-awards-grid { grid-template-columns: 1fr; }

  /* ---- Writing page ---- */
  .eu-writing-feature-card { grid-template-columns: 1fr; }
  .eu-writing-feature-art { min-height: 200px; }
  .eu-writing-feature-body { padding: 28px 24px; }

  /* ---- Contact page ---- */
  .eu-contact-grid { grid-template-columns: 1fr; }
  .eu-contact-form-wrap { padding: 28px 22px; }
  .eu-form-row { grid-template-columns: 1fr; }
  .eu-form-foot { flex-direction: column; align-items: stretch; gap: 16px; }
  .eu-form-foot .eu-btn { width: 100%; justify-content: center; }

  /* ---- CTA form stacks ---- */
  .eu-cta-form { flex-direction: column; border-radius: 20px; background: transparent; border: 0; box-shadow: none; padding: 0; gap: 10px; }
  .eu-cta-form input { border: 1.5px solid var(--border-base); border-radius: 999px; height: 52px; }
  .eu-cta-form .eu-btn { width: 100%; justify-content: center; }

  /* ---- Reader pages: tighten gutters ---- */
  .eu-cs-hero { padding: 40px 20px 0; }
  .eu-cs-metrics { padding: 40px 20px; }
  .eu-cs-body { padding: 48px 20px 32px; }
  .eu-cs-next { padding: 32px 20px 48px; }
  .eu-art { padding: 40px 20px 0; }
  .eu-art-body { padding: 32px 20px 8px; }
  .eu-art-author { padding: 0 20px; }
  .eu-art-p { font-size: 18px; }
}