/* ==========================================================================
   Layout: app shell (sidebar + top bar + main), page grid, responsive rules
   ========================================================================== */

/* ---- Sidebar ------------------------------------------------------------- */
.sidebar {
  position: fixed; inset: 0 auto 0 0; z-index: 40;
  width: var(--sidebar-w);
  display: flex; flex-direction: column;
  background: linear-gradient(176deg, #0B3563 0%, var(--navy-deep) 52%, var(--navy-dark) 100%);
  color: var(--sb-text);
  overflow-y: auto; overscroll-behavior: contain;
  transition: transform .24s var(--ease), visibility .24s;
}

.sidebar-brand {
  display: flex; flex-direction: column; align-items: center;
  padding: 24px 18px 14px;
  margin: 0 8px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}
.sidebar-brand a { display: block; border-radius: var(--r-md); }
.sidebar-brand img { display: block; width: 188px; height: auto; }

.nav-group { padding: 4px 12px 2px; }
.nav-label {
  padding: 10px 12px 6px;
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--sb-label);
}
.nav-list { display: flex; flex-direction: column; gap: 3px; }

.nav-link {
  position: relative;
  display: flex; align-items: center; gap: 14px;
  min-height: 44px; padding: 0 14px;
  border-radius: var(--r-md);
  color: var(--sb-text);
  font-size: 14.5px; font-weight: 500;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-link .icon { opacity: .92; }
.nav-link:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.nav-link[aria-current="page"] {
  background: linear-gradient(95deg, var(--action) 0%, #08806D 100%);
  color: #fff; font-weight: 600;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .14), 0 6px 16px rgba(0, 20, 40, .28);
}
.nav-link[aria-current="page"]::before {
  content: ""; position: absolute; left: -12px; top: 10px; bottom: 10px; width: 4px;
  border-radius: 0 4px 4px 0; background: var(--mint);
}

.sidebar-foot { position: relative; margin-top: auto; padding: 0 20px 20px; text-align: center; overflow: hidden; }
.sidebar-art { display: block; width: 100%; height: 118px; margin-bottom: 4px; opacity: .9; }
.sidebar-note { font-size: var(--fs-xs); line-height: 1.5; color: var(--sb-note); }
.sidebar-note strong { color: #fff; font-weight: 600; letter-spacing: .02em; }
.sidebar-tagline { margin-top: 6px; font-size: var(--fs-sm); font-style: italic; color: #E6F0FA; }

.scrim { position: fixed; inset: 0; z-index: 35; background: rgba(6, 27, 50, .55); opacity: 0; visibility: hidden; transition: opacity .2s; }

/* ---- Main column ----------------------------------------------------------- */
.app-main {
  margin-left: var(--sidebar-w);
  min-width: 0; min-height: 100vh;
  display: flex; flex-direction: column;
  transition: margin-left .24s var(--ease);
}
body.sidebar-collapsed .app-main { margin-left: 0; }
body.sidebar-collapsed .sidebar { transform: translateX(-100%); visibility: hidden; }

/* ---- Top bar --------------------------------------------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 30;
  height: var(--topbar-h);
  display: flex; align-items: center; gap: 14px;
  padding: 0 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topbar-title { flex: none; font-size: var(--fs-lg); font-weight: 700; color: var(--navy); white-space: nowrap; }
.topbar-spacer { flex: 1; }

.icon-btn {
  position: relative; flex: none;
  display: inline-grid; place-items: center;
  width: 42px; height: 42px;
  border: 0; border-radius: var(--r-md);
  background: transparent; color: var(--navy);
  transition: background var(--dur);
}
.icon-btn:hover { background: #EEF3F8; }

.search { position: relative; flex: 0 1 460px; min-width: 0; }
.search-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-muted); pointer-events: none; }
.search-input {
  width: 100%; height: 42px; padding: 0 44px 0 42px;
  border: 1px solid #C3D0DE; border-radius: var(--r-md);
  background: #F8FAFC; color: var(--text);
  transition: border-color var(--dur), box-shadow var(--dur), background var(--dur);
}
.search-input::placeholder { color: var(--text-muted); opacity: 1; }
.search-input:hover { border-color: #9DB0C4; }
.search-input:focus { outline: none; background: #fff; border-color: var(--focus); box-shadow: 0 0 0 3px rgba(7, 143, 121, .22); }
.search-kbd {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  min-width: 22px; padding: 1px 6px; text-align: center;
  font-size: var(--fs-xs); font-weight: 600; color: var(--text-muted);
  border: 1px solid #C3D0DE; border-radius: 6px; background: #fff; pointer-events: none;
}

.status-pill {
  flex: none; display: inline-flex; align-items: center; gap: 8px;
  height: 32px; padding: 0 12px;
  border-radius: 20px; background: var(--warn-bg); color: var(--warn-fg);
  font-size: var(--fs-xs); font-weight: 600; white-space: nowrap;
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }

.count-badge {
  position: absolute; top: 3px; right: 2px;
  min-width: 18px; height: 18px; padding: 0 5px;
  display: grid; place-items: center;
  border-radius: 9px; background: var(--count-bg); color: #fff;
  font-size: 11px; font-weight: 700; line-height: 1; border: 2px solid #fff; box-sizing: content-box;
}

.admin { position: relative; flex: none; }
.admin-btn {
  display: flex; align-items: center; gap: 10px;
  height: 46px; padding: 0 8px 0 4px;
  border: 0; border-radius: 28px; background: transparent; color: var(--navy);
}
.admin-btn:hover { background: #EEF3F8; }
.avatar {
  display: grid; place-items: center;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--navy); color: #fff; font-size: 13px; font-weight: 700; letter-spacing: .02em;
}
.admin-name { font-weight: 600; font-size: var(--fs-base); }

/* ---- Page container -------------------------------------------------------- */
.page { flex: 1; width: 100%; max-width: var(--page-max); margin: 0 auto; padding: 20px 24px 8px; outline: none; }

.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.page-head h1 { font-size: 26px; font-weight: 800; letter-spacing: -.02em; }
.page-head p { margin-top: 4px; color: var(--text-muted); font-size: var(--fs-md); }
.page-head h1:focus { outline: none; }
.page-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.footer {
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  max-width: var(--page-max); width: 100%; margin: 0 auto; padding: 14px 24px 18px;
  color: var(--text-muted); font-size: var(--fs-sm);
}
.footer strong { color: var(--navy); }

/* ---- Overview grid (main column + right rail, as in the design reference) -- */
.overview-grid { display: grid; grid-template-columns: minmax(0, 1fr) 356px; gap: 20px; align-items: start; }
.overview-main { display: grid; gap: 16px; min-width: 0; }
.overview-rail { display: grid; gap: 16px; min-width: 0; }
.stat-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.split-row { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, .8fr); gap: 16px; }

/* ---- Responsive ------------------------------------------------------------ */
@media (max-width: 1360px) {
  .overview-grid { grid-template-columns: minmax(0, 1fr) 320px; }
  .topbar-title { display: none; }
}

@media (max-width: 1180px) {
  .overview-grid { grid-template-columns: minmax(0, 1fr); }
  .overview-rail { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
  .stat-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .app-main, body.sidebar-collapsed .app-main { margin-left: 0; }
  .sidebar, body.sidebar-collapsed .sidebar {
    width: min(290px, 86vw); transform: translateX(-100%); visibility: hidden;
  }
  body.nav-open .sidebar { transform: none; visibility: visible; box-shadow: var(--shadow-pop); }
  body.nav-open .scrim { opacity: 1; visibility: visible; }
  body.nav-open { overflow: hidden; }
  .topbar { padding: 0 14px; gap: 8px; }
  .page { padding: 16px 14px 6px; }
  .footer { padding: 12px 14px 16px; }
  .split-row { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 700px) {
  .overview-rail { grid-template-columns: minmax(0, 1fr); }
  .status-pill .status-text { display: none; }
  .status-pill { width: 32px; padding: 0; justify-content: center; }
  .admin-name, .admin-btn .chev { display: none; }
  .search-kbd { display: none; }
  .search-input { padding-right: 12px; }
  .page-head h1 { font-size: 23px; }
}

@media (max-width: 460px) {
  .stat-row { gap: 10px; }
}