/* ==========================================================================
   layout.css — sidebar (nawigacja), topbar, siatka stron
   Wzorzec nawigacji: stały sidebar po lewej + kontekstowy topbar,
   jak w Planar/Linear/Notion. Brak górnego menu poziomego.
   ========================================================================== */

.app-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: var(--space-5) var(--space-3);
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  margin-bottom: var(--space-6);
  font-weight: 700;
  font-size: var(--fs-md);
}

.sidebar__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.sidebar__link:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}

.sidebar__link.is-active {
  background: var(--color-accent-soft);
  color: var(--color-text);
  font-weight: 600;
}

.sidebar__divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-4) var(--space-2);
}

.sidebar__user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
}

.sidebar__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--fs-xs);
}

/* --- Główna kolumna treści --- */
.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* --- Topbar --- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-7);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

/* --- Obszar treści --- */
.content {
  padding: var(--space-7);
  max-width: 1100px;
  width: 100%;
}

/* --- Siatki kafelków (Dashboard) --- */
.grid {
  display: grid;
  gap: var(--space-4);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* --- Responsywność: mobile-first fallback --- */
@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: fixed;
    inset: 0 30% 0 0;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    z-index: 100;
  }
  .sidebar.is-open { transform: translateX(0); }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .content { padding: var(--space-5); }
  .topbar { padding: var(--space-4); }
}

/* --- Strony bez sidebaru (logowanie, onboarding) --- */
.centered-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  background: var(--color-bg-subtle);
}

.centered-card {
  width: 100%;
  max-width: 420px;
}