/* ============================================================
   CODING HARBOR — responsive.css
   Desktop → laptop → tablet → mobile
============================================================ */

/* ---------- ≤ 1240px (small laptop) ---------- */
@media (max-width: 1240px) {
  .services-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- ≤ 1180px ---------- */
@media (max-width: 1180px) {
  .hero-strip { grid-template-columns: repeat(3, 1fr); row-gap: 20px; }
  .strip-item + .strip-item { border-left: 0; }
}

/* ---------- ≤ 1024px (tablet landscape) ---------- */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }

  .t-card { flex: 0 0 calc((100% - 24px) / 2); }

  .timeline { grid-template-columns: repeat(4, 1fr); row-gap: 40px; }
  .timeline::before, .timeline::after { display: none; }

  .footer-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
  .footer-news  { grid-column: 1 / -1; max-width: 460px; }
}

/* ---------- ≤ 920px (tablet / nav collapse) ---------- */
@media (max-width: 920px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: calc(var(--bar-h) + var(--nav-h)); left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 16px var(--gutter) 24px;
    background: rgba(255,255,255,.97);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 34px 56px -34px rgba(17,24,39,.28);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-14px);
    transition: opacity var(--t-fast), transform var(--t-fast), visibility var(--t-fast);
  }
  .nav-links.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }
  .nav-link { display: block; padding: 13px 6px; font-size: 1.02rem; }
  .nav-link::after { display: none; }
  .nav-cta-mobile { display: block; margin-top: 12px; }
  .nav-cta-mobile .btn { width: 100%; }

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

  .orbit-item { width: 112px; }
  .orbit-icon { width: 51px; height: 51px; border-radius: 16px; }
  .orbit-icon svg { width: 24px; height: 24px; }
  .orbit-label { font-size: .74rem; }
}

/* ---------- ≤ 740px ---------- */
@media (max-width: 740px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .blog-grid { grid-template-columns: 1fr; }
  .hero-strip { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- ≤ 700px (timeline goes vertical) ---------- */
@media (max-width: 700px) {
  .timeline {
    grid-template-columns: 1fr;
    row-gap: 30px;
    max-width: 420px;
    margin-inline: auto;
  }
  .timeline::before, .timeline::after {
    display: block;
    top: 10px; bottom: 10px;
    left: 21px; right: auto;
    width: 2px; height: auto;
  }
  .timeline::after {
    height: 0;
    bottom: auto;
    transition: height 1.8s var(--ease) .35s;
  }
  .timeline.in-view::after { width: 2px; height: calc(100% - 20px); }

  .step {
    display: grid;
    grid-template-columns: 44px 1fr;
    grid-template-rows: auto auto;
    column-gap: 18px;
    text-align: left;
  }
  .step-dot { grid-row: 1 / span 2; margin: 0; }
  .step h3 { grid-column: 2; margin-top: 0; align-self: center; }
  .step p  { grid-column: 2; margin-top: 3px; }
}

/* ---------- ≤ 680px (slider single) ---------- */
@media (max-width: 680px) {
  .t-card { flex: 0 0 100%; }
}

/* ---------- ≤ 640px (compact orbit: all 10 services, icon-only) ---------- */
@media (max-width: 640px) {
  .orbit-stage { aspect-ratio: 1000 / 860; }
  .orbit-item { width: 56px; }
  .orbit-icon { width: 44px; height: 44px; border-radius: 14px; }
  .orbit-icon svg { width: 21px; height: 21px; }
  .orbit-label { display: none; }
  .orbit-guides .ring-inner-el { display: none; }

  .logo-mark-lg { width: 62px; }
  .wordmark-top { font-size: 1.35rem; letter-spacing: .1em; }
  .wordmark-bottom { font-size: .72rem; letter-spacing: .5em; text-indent: .5em; }
  .orbit-tagline { display: none; }

  .hero-strip { padding: 1.2rem 1.1rem; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-brand, .footer-news { grid-column: 1 / -1; }
}

/* ---------- ≤ 560px ---------- */
@media (max-width: 560px) {
  .nav-cta { display: none; }
  .hero-strip { grid-template-columns: 1fr; }
  .strip-item { padding-inline: .2rem; }
}

/* ---------- ≤ 480px (phones) ---------- */
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }

  .orbit-item { width: 50px; }
  .orbit-icon { width: 40px; height: 40px; }
  .orbit-icon svg { width: 19px; height: 19px; }

  .services-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .stat-card { padding: 32px 14px 28px; }

  .news-form { flex-direction: column; }
  .news-form .btn { width: 100%; }

  .footer-bottom { justify-content: center; text-align: center; }
}

/* ---------- ≤ 380px (small phones) ---------- */
@media (max-width: 380px) {
  .stats-grid { grid-template-columns: 1fr; }
}

/* ---------- Multi-page responsive ---------- */
@media (max-width: 1000px) {
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .milestones { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .detail-row { grid-template-columns: 1fr; gap: 1.8rem; }
  .detail-row .detail-visual { order: -1; max-width: 560px; margin-inline: auto; width: 100%; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .cta-mini { flex-direction: column; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 460px) {
  .values-grid { grid-template-columns: 1fr; }
  .milestones { grid-template-columns: 1fr; }
}

/* ---------- Inner-page enhancements responsive ---------- */
@media (max-width: 980px) {
  .models-grid { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; }
  .model-card.featured { order: -1; }
}
@media (max-width: 860px) {
  .featured-post { grid-template-columns: 1fr; }
  .featured-post .blog-thumb { min-height: 190px; }
  .steps-strip { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .mini-stats { grid-template-columns: 1fr; gap: 14px; }
}

/* ---------- Enterprise layer responsive ---------- */
@media (max-width: 900px) {
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .announce { font-size: .76rem; padding-left: 12px; }
  .announce .a-lead { display: none; }
  .industry-grid { grid-template-columns: 1fr; }
}