/* ==========================================================================
   PenbunWeb — 03-layout.css
   The shell: sidebar + topbar + content column.
   ========================================================================== */

.pb-shell {
  display: grid;
  grid-template-columns: var(--pb-sidebar-w) minmax(0, 1fr);
  min-height: 100vh;
  transition: grid-template-columns var(--pb-dur) var(--pb-ease);
}

.pb-shell[data-sidebar="collapsed"] {
  grid-template-columns: var(--pb-sidebar-w-collapsed) minmax(0, 1fr);
}

/* --------------------------------------------------------------- sidebar */
.pb-sidebar {
  position: sticky;
  top: 0;
  z-index: var(--pb-z-sidebar);
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--pb-sidebar-bg);
  border-right: 1px solid var(--pb-border);
  overflow: hidden;
}

.pb-brand {
  display: flex;
  align-items: center;
  gap: var(--pb-3);
  height: var(--pb-topbar-h);
  padding: 0 var(--pb-4);
  flex: 0 0 auto;
  border-bottom: 1px solid var(--pb-divider);
  color: var(--pb-text);
}
.pb-brand:hover { color: var(--pb-text); }

.pb-brand__mark {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--pb-r-md);
  background: var(--pb-brand);
  color: #fff;
  font-weight: 800;
  font-size: var(--pb-fs-md);
  letter-spacing: -0.04em;
  box-shadow: 0 6px 16px -8px rgba(249, 115, 22, 0.9);
}

.pb-brand__text { display: flex; flex-direction: column; line-height: 1.1; min-width: 0; }
.pb-brand__name { font-weight: 700; font-size: var(--pb-fs-md); letter-spacing: -0.02em; }
.pb-brand__meta { font-size: var(--pb-fs-2xs); color: var(--pb-text-3); letter-spacing: 0.06em; }

.pb-nav {
  flex: 1 1 auto;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--pb-4) var(--pb-3) var(--pb-6);
}

.pb-nav__group + .pb-nav__group { margin-top: var(--pb-5); }

.pb-nav__label {
  padding: 0 var(--pb-3) var(--pb-2);
  font-size: var(--pb-fs-2xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pb-text-3);
}

.pb-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--pb-3);
  padding: var(--pb-2) var(--pb-3);
  margin-bottom: 2px;
  border-radius: var(--pb-r-sm);
  color: var(--pb-text-2);
  font-size: var(--pb-fs-sm);
  font-weight: 500;
  white-space: nowrap;
  transition: background-color var(--pb-dur-fast) var(--pb-ease),
    color var(--pb-dur-fast) var(--pb-ease);
}

.pb-nav__link:hover {
  background: var(--pb-surface-2);
  color: var(--pb-text);
}

.pb-nav__link[aria-current="page"] {
  background: var(--pb-brand-soft);
  color: var(--pb-brand);
  font-weight: 600;
}

.pb-nav__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  inset-inline-start: -12px;
  top: 50%;
  translate: 0 -50%;
  width: 3px;
  height: 20px;
  border-radius: 0 3px 3px 0;
  background: var(--pb-brand);
}

.pb-nav__icon {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  stroke-width: 1.75;
}

.pb-nav__text { flex: 1 1 auto; overflow: hidden; text-overflow: ellipsis; }

.pb-nav__count {
  flex: 0 0 auto;
  font-size: var(--pb-fs-2xs);
  font-weight: 700;
  padding: 1px 7px;
  border-radius: var(--pb-r-pill);
  background: var(--pb-surface-3);
  color: var(--pb-text-2);
}
.pb-nav__count--alert { background: var(--pb-neg-soft); color: var(--pb-neg); }

.pb-sidebar__foot {
  flex: 0 0 auto;
  min-height: var(--pb-bar-h);
  display: flex;
  align-items: center;
  padding: var(--pb-1) var(--pb-3);
  border-top: 1px solid var(--pb-divider);
}

.pb-collapsebtn {
  display: flex;
  align-items: center;
  gap: var(--pb-3);
  width: 100%;
  padding: var(--pb-2) var(--pb-3);
  border: 0;
  border-radius: var(--pb-r-md);
  background: transparent;
  color: var(--pb-text-2);
  font-size: var(--pb-fs-sm);
  font-weight: 500;
  text-align: start;
  transition: background-color var(--pb-dur-fast) var(--pb-ease), color var(--pb-dur-fast) var(--pb-ease);
}
.pb-collapsebtn:hover { background: var(--pb-surface-2); color: var(--pb-text); }
.pb-collapsebtn svg { width: 18px; height: 18px; flex: 0 0 auto; }
.pb-collapsebtn__text { flex: 1 1 auto; white-space: nowrap; }

/* Collapsed rail */
.pb-shell[data-sidebar="collapsed"] .pb-brand__text,
.pb-shell[data-sidebar="collapsed"] .pb-nav__text,
.pb-shell[data-sidebar="collapsed"] .pb-nav__count,
.pb-shell[data-sidebar="collapsed"] .pb-nav__label,
.pb-shell[data-sidebar="collapsed"] .pb-collapsebtn__text {
  display: none;
}
.pb-shell[data-sidebar="collapsed"] .pb-nav__link,
.pb-shell[data-sidebar="collapsed"] .pb-brand,
.pb-shell[data-sidebar="collapsed"] .pb-collapsebtn {
  justify-content: center;
  padding-inline: var(--pb-2);
}
.pb-shell[data-sidebar="collapsed"] .pb-nav__group + .pb-nav__group {
  margin-top: var(--pb-3);
  padding-top: var(--pb-3);
  border-top: 1px solid var(--pb-divider);
}

/* ---------------------------------------------------------------- topbar */
.pb-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.pb-topbar {
  position: sticky;
  top: 0;
  z-index: var(--pb-z-topbar);
  height: var(--pb-topbar-h);
  display: flex;
  align-items: center;
  gap: var(--pb-2);
  padding: 0 var(--pb-4);
  background: var(--pb-topbar-bg);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--pb-border);
}

.pb-topbar__spacer { flex: 1 1 auto; }

.pb-topnav {
  display: flex;
  align-items: center;
  gap: var(--pb-1);
  margin-inline-start: var(--pb-1);
}
.pb-topnav__item {
  display: inline-flex;
  align-items: center;
  gap: var(--pb-2);
  padding: var(--pb-2) var(--pb-3);
  border-radius: var(--pb-r-md);
  color: var(--pb-text-2);
  font-size: var(--pb-fs-sm);
  font-weight: 500;
  white-space: nowrap;
  transition: background-color var(--pb-dur-fast) var(--pb-ease), color var(--pb-dur-fast) var(--pb-ease);
}
.pb-topnav__item:hover { background: var(--pb-surface-2); color: var(--pb-text); }
.pb-topnav__item svg { width: 16px; height: 16px; }

/* The collapse action lives at the sidebar bottom on desktop; the topbar
   hamburger only opens the drawer on mobile. */
.pb-topbar [data-sidebar-toggle] { display: none; }

.pb-search {
  position: relative;
  flex: 0 1 380px;
  min-width: 0;
}
.pb-search__icon {
  position: absolute;
  left: 11px;
  top: 50%;
  translate: 0 -50%;
  width: 16px;
  height: 16px;
  color: var(--pb-text-3);
  pointer-events: none;
}
.pb-search__input {
  width: 100%;
  height: 38px;
  padding: 0 68px 0 34px;
  border-radius: var(--pb-r-md);
  border: 1px solid var(--pb-border);
  background: var(--pb-surface-2);
  color: var(--pb-text);
  font-size: var(--pb-fs-sm);
  transition: border-color var(--pb-dur-fast) var(--pb-ease), box-shadow var(--pb-dur-fast) var(--pb-ease);
}
.pb-search__input::placeholder { color: var(--pb-text-3); }
.pb-search__input:focus {
  outline: none;
  border-color: var(--pb-brand);
  box-shadow: var(--pb-ring);
}
.pb-search__kbd {
  position: absolute;
  right: 8px;
  top: 50%;
  translate: 0 -50%;
  display: flex;
  gap: 3px;
  pointer-events: none;
}

/* --------------------------------------------------------------- content */
.pb-content {
  flex: 1 1 auto;
  width: 100%;
  margin: 0;
  padding: var(--pb-6) var(--pb-6) var(--pb-10);
}

/* ---------------------------------------------------------------- footer */
.pb-footer {
  flex: 0 0 auto;
  min-height: var(--pb-bar-h);
  display: flex;
  align-items: center;
  border-top: 1px solid var(--pb-border);
}

.pb-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--pb-2);
  flex-wrap: wrap;
  width: 100%;
  margin: 0;
  padding: var(--pb-2) var(--pb-6);
  font-size: var(--pb-fs-xs);
  color: var(--pb-text-3);
}

.pb-footer__version {
  font-family: var(--pb-font-mono);
  letter-spacing: 0.02em;
}

.pb-pagehead {
  display: flex;
  align-items: flex-end;
  gap: var(--pb-4);
  flex-wrap: wrap;
  margin-bottom: var(--pb-5);
}
.pb-pagehead__titles { min-width: 0; flex: 1 1 320px; }
.pb-pagehead__actions { display: flex; gap: var(--pb-2); flex-wrap: wrap; }
.pb-pagehead h1 { margin-top: var(--pb-1); }
.pb-pagehead__sub { margin: var(--pb-2) 0 0; color: var(--pb-text-2); font-size: var(--pb-fs-sm); }

/* Grid helpers */
.pb-grid {
  display: grid;
  gap: var(--pb-4);
  grid-template-columns: repeat(12, minmax(0, 1fr));
}
.pb-col-3 { grid-column: span 3; }
.pb-col-4 { grid-column: span 4; }
.pb-col-5 { grid-column: span 5; }
.pb-col-6 { grid-column: span 6; }
.pb-col-7 { grid-column: span 7; }
.pb-col-8 { grid-column: span 8; }
.pb-col-9 { grid-column: span 9; }
.pb-col-12 { grid-column: span 12; }

.pb-stack { display: flex; flex-direction: column; gap: var(--pb-4); }
.pb-row { display: flex; align-items: center; gap: var(--pb-3); flex-wrap: wrap; }

/* --------------------------------------------------------------- overlay */
/* Closed state must be display:none, not just transparent: a fixed, full
   viewport element that declares backdrop-filter still blurs the page behind
   it in Chromium even at opacity 0. The blur only exists while it is open. */
.pb-scrim {
  display: none;
  position: fixed;
  inset: 0;
  z-index: var(--pb-z-overlay);
  background: rgba(6, 7, 18, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--pb-dur) var(--pb-ease);
}
.pb-scrim.is-open {
  display: block;
  opacity: 1;
  pointer-events: auto;
  backdrop-filter: blur(2px);
}

/* ------------------------------------------------------------ responsive */
@media (max-width: 1200px) {
  .pb-col-3 { grid-column: span 6; }
  .pb-col-4 { grid-column: span 6; }
  .pb-col-5, .pb-col-7, .pb-col-8, .pb-col-9 { grid-column: span 12; }
}

@media (max-width: 992px) {
  .pb-shell,
  .pb-shell[data-sidebar="collapsed"] {
    grid-template-columns: minmax(0, 1fr);
  }
  /* Drawer. Closed uses transform + visibility so it is fully out of the
     layout and out of the tab order, regardless of `translate` support. */
  .pb-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(var(--pb-sidebar-w), 86vw);
    transform: translateX(-100%);
    visibility: hidden;
    transition: transform var(--pb-dur) var(--pb-ease), visibility var(--pb-dur);
    box-shadow: var(--pb-shadow-lg);
    z-index: calc(var(--pb-z-overlay) + 1);
  }
  .pb-shell[data-drawer="open"] .pb-sidebar {
    transform: translateX(0);
    visibility: visible;
  }
  .pb-shell[data-sidebar="collapsed"] .pb-sidebar {
    width: var(--pb-sidebar-w-collapsed);
  }
  .pb-topbar [data-sidebar-toggle] { display: inline-grid; }
  .pb-topnav { display: none; }
  .pb-content { padding: var(--pb-4) var(--pb-4) var(--pb-8); }
  .pb-footer__inner { padding: var(--pb-2) var(--pb-4); }
  .pb-col-3, .pb-col-4, .pb-col-6 { grid-column: span 12; }
}

@media (max-width: 640px) {
  .pb-search { display: none; }
  .pb-pagehead__actions { width: 100%; }
  .pb-pagehead__actions .pb-btn { flex: 1 1 auto; justify-content: center; }
}