/* ==========================================================================
   NOVA JOURNAL — Responsive layer
   Base styles in style.css are mobile-first; this file scales them up
   and owns the mobile navigation drawer.
   Breakpoints: 480 / 640 / 900 / 1100 / 1400
   ========================================================================== */

/* --------------------------------------------------------------------------
   MOBILE NAVIGATION DRAWER  (< 900px)
   -------------------------------------------------------------------------- */

@media (max-width: 899px) {

  .nav-toggle {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: var(--r-pill);
    border: 1.5px solid var(--border);
    color: var(--text);
    order: 3;
  }

  .nav-toggle svg { width: 21px; height: 21px; }
  .nav-toggle .icon-close { display: none; }
  .nav-toggle[aria-expanded="true"] .icon-open { display: none; }
  .nav-toggle[aria-expanded="true"] .icon-close { display: block; }

  /* Drawer panel slides in from the right */
  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(318px, 86vw);
    z-index: var(--z-drawer);
    display: flex;
    flex-direction: column;
    gap: var(--sp-5);
    padding: calc(var(--header-h) + var(--sp-5)) var(--sp-5) var(--sp-6);
    background: var(--bg-elevated);
    border-left: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    visibility: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    transition: transform var(--t-slow), visibility var(--t-slow);
  }

  .site-nav.is-open { transform: none; visibility: visible; }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-1);
  }

  .nav-link {
    padding: var(--sp-3) var(--sp-4);
    border-radius: var(--r-md);
    font-size: var(--fs-md);
    min-height: 48px;
    display: flex;
    align-items: center;
  }

  /* CTA pinned to the bottom of the drawer */
  .nav-cta { margin-top: auto; }
  .nav-cta .btn { width: 100%; }

  /* Header CTA button is duplicated inside the drawer on mobile */
  .header-actions .btn-cta { display: none; }

  .nav-scrim {
    position: fixed;
    inset: 0;
    z-index: calc(var(--z-drawer) - 1);
    background: rgba(4, 8, 16, .6);
    backdrop-filter: blur(3px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--t-base), visibility var(--t-base);
  }

  .nav-scrim.is-open { opacity: 1; visibility: visible; }

  /* Lock background scroll while the drawer is open */
  body.nav-open { overflow: hidden; }
}

/* Drawer-only elements never show on desktop */
@media (min-width: 900px) {
  .nav-scrim, .nav-cta { display: none; }
}

/* --------------------------------------------------------------------------
   >= 480px  — small phones landscape / large phones
   -------------------------------------------------------------------------- */

@media (min-width: 480px) {
  :root { --fs-3xl: 2.9rem; }

  .stats { grid-template-columns: repeat(4, 1fr); }

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

  .about-preview {
    grid-template-columns: auto 1fr;
    align-items: center;
  }
}

/* --------------------------------------------------------------------------
   >= 640px  — tablets
   -------------------------------------------------------------------------- */

@media (min-width: 640px) {
  :root {
    --fs-2xl: 2.15rem;
    --fs-3xl: 3rem;
    --header-h: 74px;
  }

  .container { padding-inline: var(--sp-6); }

  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .topic-grid { grid-template-columns: repeat(2, 1fr); }

  .section { padding-block: var(--sp-8); }

  .toolbar { flex-direction: row; align-items: center; justify-content: space-between; }
  .toolbar-row { flex: 1; }

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

  .article-cover { border-radius: var(--r-xl); }

  .footer-grid { grid-template-columns: 1.6fr 1fr 1fr; }
}

/* --------------------------------------------------------------------------
   >= 900px  — laptops: desktop nav, horizontal featured card
   -------------------------------------------------------------------------- */

@media (min-width: 900px) {
  :root {
    --fs-3xl: 3.4rem;
    --fs-4xl: 4rem;
  }

  .hero { padding-block: var(--sp-9) var(--sp-8); }
  .hero h1 { font-size: var(--fs-3xl); }

  .hero-grid { grid-template-columns: minmax(0, 1.15fr) auto; }
  .hero-mark { display: block; }

  /* Featured post: image left, text right */
  .featured-card { grid-template-columns: 1.05fr 1fr; align-items: stretch; }
  .featured-card .cover { aspect-ratio: auto; min-height: 340px; }
  .featured-body { padding: var(--sp-7); }

  /* Create-post page: form + sticky live preview */
  .editor-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: var(--sp-6);
    align-items: start;
  }

  /* Contact page: form + info sidebar */
  .contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: var(--sp-6);
    align-items: start;
  }

  .about-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: var(--sp-7);
    align-items: start;
  }

  .about-aside { position: sticky; top: calc(var(--header-h) + var(--sp-4)); }

  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.2fr; }
}

/* --------------------------------------------------------------------------
   >= 1100px  — desktop: three-column card grids
   -------------------------------------------------------------------------- */

@media (min-width: 1100px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .topic-grid { grid-template-columns: repeat(3, 1fr); }

  .hero-inner { max-width: 800px; }

  .article-body { font-size: 1.125rem; }
}

/* --------------------------------------------------------------------------
   >= 1400px  — large desktop
   -------------------------------------------------------------------------- */

@media (min-width: 1400px) {
  :root { --max-w: 1260px; }
}

/* --------------------------------------------------------------------------
   NARROW PHONES (<= 380px) — keep everything reachable at 320px
   -------------------------------------------------------------------------- */

@media (max-width: 380px) {
  :root {
    --fs-2xl: 1.6rem;
    --fs-3xl: 1.95rem;
    --sp-5: 18px;
    --sp-6: 24px;
  }

  .container { padding-inline: var(--sp-4); }

  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }

  .post-card-body, .featured-body, .panel, .toolbar { padding: var(--sp-4); }

  .stats { grid-template-columns: repeat(2, 1fr); padding: var(--sp-5); }

  .toast-region { right: var(--sp-3); left: var(--sp-3); bottom: var(--sp-3); max-width: none; }

  .scroll-top { right: var(--sp-3); bottom: var(--sp-3); }

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

}

/* --------------------------------------------------------------------------
   LANDSCAPE PHONES — stop the hero eating the whole viewport.
   Width-scoped on purpose: without `max-width` this also matches a short,
   wide desktop window and would push the drawer padding onto the desktop nav.
   -------------------------------------------------------------------------- */

@media (max-width: 899px) and (max-height: 520px) and (orientation: landscape) {
  .hero { padding-block: var(--sp-6); }
  .site-nav { padding-top: calc(var(--header-h) + var(--sp-3)); }
}