/* =========================================================
   Váz: felső sáv + bal oldali navigáció + tartalom.
   Mobilon a navigáció alsó tab-sávvá alakul.
   ========================================================= */

.app {
  display: grid;
  grid-template-columns: var(--nav-w) minmax(0, 1fr);
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-areas:
    "nav top"
    "nav main";
  min-height: 100vh;
  min-height: 100dvh;
}

/* ---------- Felső sáv ---------- */
.topbar {
  grid-area: top;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0 var(--space-5);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar__left  { display: flex; align-items: baseline; gap: var(--space-4); min-width: 0; }
.topbar__right { display: flex; gap: var(--space-2); flex-shrink: 0; }
.brand { font-weight: 700; letter-spacing: -.01em; }
.topbar__date { color: var(--text-muted); font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- Navigáció ---------- */
.nav {
  grid-area: nav;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  border-right: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100dvh;
}
.nav__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  width: 56px;
  padding: var(--space-2) 0;
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: .68rem;
  text-decoration: none;
}
.nav__link:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.nav__link[aria-current="page"] { background: var(--accent-soft); color: var(--accent); }

/* ---------- Tartalom ---------- */
.main {
  grid-area: main;
  padding: var(--space-5);
  min-width: 0;
}
.main:focus { outline: none; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

/* ---------- Kártya-rács (12 oszlop) ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-4);
}
.span-12 { grid-column: span 12; }
.span-8  { grid-column: span 8; }
.span-6  { grid-column: span 6; }
.span-4  { grid-column: span 4; }

/* Tablet: 2 oszlopos érzet */
@media (max-width: 1100px) {
  .span-8, .span-4 { grid-column: span 6; }
  .span-8 { grid-column: span 12; }
}

/* Mobil */
@media (max-width: 720px) {
  .app {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "top"
      "main";
  }
  .topbar { padding: 0 var(--space-4); }
  .brand { display: none; }
  .main {
    padding: var(--space-4);
    padding-bottom: calc(var(--tabbar-h) + var(--space-4) + env(safe-area-inset-bottom));
  }
  .grid { gap: var(--space-3); }
  .grid > * { grid-column: span 12 !important; }

  .nav {
    position: fixed;
    inset: auto 0 0 0;
    height: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
    padding: 0 var(--space-2) env(safe-area-inset-bottom);
    flex-direction: row;
    justify-content: space-around;
    border-right: 0;
    border-top: 1px solid var(--border);
    z-index: 20;
  }
  .nav__link { width: auto; flex: 1; }
}