.dibana-app {
  width: min(100%, var(--dibana-app-max-width));
  min-height: 100dvh;
  margin: 0 auto;
  display: grid;
  grid-template-columns: var(--dibana-sidebar-width) minmax(0, 1fr);
  grid-template-rows: var(--dibana-topbar-height) minmax(0, 1fr);
  grid-template-areas:
    "sidebar topbar"
    "sidebar main";
  background: var(--dibana-surface);
  border-left: 1px solid var(--dibana-border);
  border-right: 1px solid var(--dibana-border);
}

.dibana-sidebar {
  grid-area: sidebar;
  position: sticky;
  top: 0;
  height: 100dvh;
  padding: var(--dibana-space-6) var(--dibana-space-4);
  border-right: 1px solid var(--dibana-border);
  background: var(--dibana-surface);
  display: flex;
  flex-direction: column;
  gap: var(--dibana-space-6);
}
.dibana-sidebar__logo { width: 150px; }
.dibana-nav { display: grid; gap: 6px; }
.dibana-nav__item { min-height: 42px; border-radius: 10px; padding: 0 12px; display: flex; align-items: center; gap: 10px; color: var(--dibana-text-2); font-weight: 500; }
.dibana-nav__item--active { color: var(--dibana-purple); background: var(--dibana-purple-soft); font-weight: 600; }

.dibana-topbar {
  grid-area: topbar;
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: var(--dibana-space-4);
  padding: 0 var(--dibana-space-6);
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--dibana-border);
  backdrop-filter: blur(12px);
}
.dibana-topbar__search { width: min(520px, 100%); }
.dibana-topbar__actions { margin-left: auto; display: flex; align-items: center; gap: var(--dibana-space-2); }

.dibana-main {
  grid-area: main;
  min-width: 0;
  background: var(--dibana-bg);
  padding: var(--dibana-space-6);
}
.dibana-workspace { width: 100%; max-width: 1120px; margin: 0 auto; display: grid; gap: var(--dibana-space-6); }
.dibana-page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--dibana-space-4); }

.dibana-mobile-topbar, .dibana-mobile-nav { display: none; }

@media (max-width: 1023px) and (min-width: 768px) {
  .dibana-app { grid-template-columns: 88px minmax(0, 1fr); }
  .dibana-sidebar { align-items: center; padding-inline: 12px; }
  .dibana-sidebar__logo { width: 40px; overflow: hidden; }
  .dibana-nav__item { width: 48px; justify-content: center; padding: 0; font-size: 0; }
}

@media (max-width: 767px) {
  .dibana-app {
    display: block;
    min-height: 100dvh;
    border: 0;
    padding-top: 56px;
    padding-bottom: calc(var(--dibana-mobile-bottom-nav-height) + env(safe-area-inset-bottom));
  }
  .dibana-sidebar, .dibana-topbar { display: none; }
  .dibana-mobile-topbar {
    display: flex;
    position: fixed;
    inset: 0 0 auto 0;
    height: 56px;
    z-index: 20;
    align-items: center;
    padding: 0 16px;
    background: rgba(255,255,255,.97);
    border-bottom: 1px solid var(--dibana-border);
    backdrop-filter: blur(12px);
  }
  .dibana-mobile-topbar img { width: 118px; }
  .dibana-mobile-topbar__actions { margin-left: auto; display: flex; gap: 8px; }
  .dibana-main { padding: 16px; min-height: calc(100dvh - 56px); }
  .dibana-workspace { gap: 16px; }
  .dibana-mobile-nav {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    position: fixed;
    z-index: 20;
    inset: auto 0 0 0;
    min-height: calc(var(--dibana-mobile-bottom-nav-height) + env(safe-area-inset-bottom));
    padding-bottom: env(safe-area-inset-bottom);
    background: rgba(255,255,255,.98);
    border-top: 1px solid var(--dibana-border);
    backdrop-filter: blur(14px);
  }
  .dibana-mobile-nav__item { display: grid; place-items: center; align-content: center; gap: 2px; min-height: 64px; color: var(--dibana-text-2); font-size: 11px; font-weight: 500; }
  .dibana-mobile-nav__item--active { color: var(--dibana-purple); }
  .dibana-mobile-nav__create { width: 44px; height: 44px; place-self: center; border: 0; border-radius: 50%; background: var(--dibana-purple); color: white; font-size: 26px; line-height: 1; }
  .dibana-page-header { display: grid; }
}