/* ==========================================================================
   LAYOUT — app shell (sidebar + topbar + content), page header, responsive
   ========================================================================== */

.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ---------------------------------------------------------------------- */
/* SIDEBAR                                                                 */
/* ---------------------------------------------------------------------- */
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  inset-block: 0;
  left: 0;
  z-index: 1040;
  transition: width var(--duration-base) var(--ease-standard), transform var(--duration-base) var(--ease-standard);
}

.sidebar__brand {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-inline: var(--space-5);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
a.sidebar__brand { color: var(--color-text-primary); text-decoration: none; }
a.sidebar__brand:hover { color: var(--color-text-primary); }
a.sidebar__brand:hover .sidebar__brand-mark { filter: brightness(1.08); }
.sidebar__brand-mark {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-gradient);
  color: var(--color-text-on-primary);
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--fw-bold);
  flex-shrink: 0;
}
.sidebar__brand-text { font-weight: var(--fw-semibold); font-size: var(--fs-h4); white-space: nowrap; overflow: hidden; }

.sidebar__nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) var(--space-3);
}
.sidebar__section-label {
  font-size: 11px;
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: var(--space-4) var(--space-3) var(--space-2);
}

.nav-item { list-style: none; }
.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
  white-space: nowrap;
  position: relative;
  transition: background-color var(--duration-fast), color var(--duration-fast);
}
.nav-link:hover { background: var(--color-card-alt); color: var(--color-text-primary); }
.nav-link.is-active { background: var(--color-primary-soft); color: var(--color-primary-soft-text); }
.nav-link.is-active::before {
  content: '';
  position: absolute;
  left: -9px; top: 6px; bottom: 6px;
  width: 3px;
  border-radius: 2px;
  background: var(--color-primary-gradient);
}
.nav-link i { font-size: 1.05rem; width: 20px; text-align: center; flex-shrink: 0; }
.nav-link .nav-link__label { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.nav-link .nav-link__chevron { font-size: 0.75rem; transition: transform var(--duration-base); }
.nav-item.is-open > .nav-link .nav-link__chevron { transform: rotate(90deg); }

.nav-submenu {
  list-style: none;
  margin: 0; padding: 2px 0 6px 34px;
  display: none;
}
.nav-item.is-open > .nav-submenu { display: block; }
.nav-submenu .nav-link { padding: 8px var(--space-3); font-size: var(--fs-small); }

.nav-badge {
  font-size: 11px;
  font-weight: var(--fw-semibold);
  padding: 1px 7px;
  border-radius: var(--radius-pill);
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

/* Collapsed state (desktop icon-rail) */
.app-shell.is-sidebar-collapsed .sidebar { width: var(--sidebar-width-collapsed); }
.app-shell.is-sidebar-collapsed .sidebar__brand-text,
.app-shell.is-sidebar-collapsed .nav-link__label,
.app-shell.is-sidebar-collapsed .nav-link__chevron,
.app-shell.is-sidebar-collapsed .nav-badge,
.app-shell.is-sidebar-collapsed .sidebar__section-label { display: none; }
.app-shell.is-sidebar-collapsed .nav-submenu { display: none !important; }
.app-shell.is-sidebar-collapsed .nav-link { justify-content: center; }

/* ---------------------------------------------------------------------- */
/* MAIN / TOPBAR                                                          */
/* ---------------------------------------------------------------------- */
.main {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0; /* same reason as .card-custom in components.css — stops inner content (e.g. a wide table) from growing this flex item, and the page, past the viewport width */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--duration-base) var(--ease-standard);
}
.app-shell.is-sidebar-collapsed .main { margin-left: var(--sidebar-width-collapsed); }

.topbar {
  height: var(--topbar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-inline: var(--space-5);
  position: sticky;
  top: 0;
  z-index: 1020;
}

.topbar__search {
  position: relative;
  max-width: 360px;
  flex: 1;
  min-width: 0; /* lets the search box shrink on narrow phones instead of pushing the topbar icons off-screen */
}
.topbar__search input {
  width: 100%;
}
.topbar__search i {
  position: absolute;
  left: 12px; top: 50%; transform: translateY(-50%);
  color: var(--color-text-muted);
}
.topbar__search input { padding-left: 36px; }

.topbar__actions { display: flex; align-items: center; gap: var(--space-2); margin-left: auto; }

.icon-btn {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid transparent;
  position: relative;
  cursor: pointer;
  transition: background-color var(--duration-fast), border-color var(--duration-fast);
}
.icon-btn:hover { background: var(--color-card-alt); border-color: var(--color-border); color: var(--color-text-primary); }
.icon-btn .dot {
  position: absolute; top: 7px; right: 7px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-danger);
  border: 2px solid var(--color-surface);
}

.topbar__user {
  display: flex; align-items: center; gap: var(--space-2);
  padding: 6px 8px 6px 6px;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
}
.topbar__user:hover { background: var(--color-card-alt); border-color: var(--color-border); }
.avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--color-secondary-soft);
  color: var(--color-secondary);
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--fw-semibold); font-size: var(--fs-small);
  flex-shrink: 0;
  overflow: hidden;
}
.topbar__user-meta { line-height: 1.2; display: none; }
.topbar__user-meta .name { font-size: var(--fs-small); font-weight: var(--fw-semibold); }
.topbar__user-meta .role { font-size: 11px; color: var(--color-text-muted); }
@media (min-width: 768px) { .topbar__user-meta { display: block; } }

.sidebar-toggle {
  display: none;
}
@media (max-width: 991px) {
  .sidebar-toggle { display: inline-flex; }
}

/* ---------------------------------------------------------------------- */
/* PAGE CONTENT + HEADER                                                   */
/* ---------------------------------------------------------------------- */
.page-content {
  padding: var(--space-6);
  flex: 1 0 auto;
}
@media (max-width: 576px) { .page-content { padding: var(--space-4); } }

/* ---- App footer — sits at the bottom of the viewport on short pages,
   and at the end of content on long ones (not a true position:fixed
   overlay, which would otherwise cover scrolling content). ---- */
.app-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px var(--space-6);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 12px;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  flex-shrink: 0;
}
.app-footer a { color: var(--color-text-muted); text-decoration: underline; }
.app-footer a:hover { color: var(--color-primary); }
@media (max-width: 576px) { .app-footer { padding: 12px var(--space-4); } }

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.page-header__title { margin-bottom: 4px; }
.page-header__desc { margin: 0; color: var(--color-text-secondary); font-size: var(--fs-small); }
.page-header__actions { display: flex; gap: var(--space-2); flex-shrink: 0; }

.breadcrumb-custom {
  display: flex; align-items: center; gap: 6px;
  font-size: var(--fs-small);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
  list-style: none; padding: 0;
}
.breadcrumb-custom a { color: var(--color-text-muted); }
.breadcrumb-custom a:hover { color: var(--color-primary); }
.breadcrumb-custom .sep { opacity: 0.6; }
.breadcrumb-custom .current { color: var(--color-text-secondary); }

/* ---------------------------------------------------------------------- */
/* RESPONSIVE — sidebar collapses to offcanvas under 992px                */
/* ---------------------------------------------------------------------- */
@media (max-width: 991px) {
  .sidebar {
    transform: translateX(-100%);
    width: 280px;
    box-shadow: var(--shadow-modal);
  }
  .app-shell.is-mobile-nav-open .sidebar { transform: translateX(0); }
  .main { margin-left: 0 !important; }

  .sidebar-backdrop {
    display: none;
    position: fixed; inset: 0;
    background: rgba(10, 15, 17, 0.45);
    z-index: 1030;
  }
  .app-shell.is-mobile-nav-open .sidebar-backdrop { display: block; }
}

@media (min-width: 992px) {
  .sidebar-backdrop { display: none !important; }
}

/* ---------------------------------------------------------------------- */
/* PRINT — used by the Print / "Export PDF" buttons (browser print dialog,  */
/* choose "Save as PDF"). Hides navigation chrome, prints the page content. */
/* ---------------------------------------------------------------------- */
@media print {
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  body { background: #fff; }
  .sidebar, .sidebar-backdrop, .topbar, .app-footer, .toast-stack,
  .modal-overlay, .page-header__actions { display: none !important; }
  .main { margin-left: 0 !important; min-height: 0; }
  .page-content { padding: 0; }
  .card-custom, .stat-card, .kpi-card { box-shadow: none; break-inside: avoid; }
  .table-wrap { overflow: visible; }
}