/* ════════════════════════════════════════════════════════════
   LAYOUT — app grid, header, sidebar, main, pages
   ════════════════════════════════════════════════════════════ */

/* ── APP GRID ── */
#app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--header-h) 1fr;
  height: 100vh;
}

/* ── HEADER ── */
#header {
  grid-column: 1 / -1;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 16px;
  padding: 0 20px;
  position: relative; z-index: 100;
}
.logo {
  font-family: var(--sans); font-size: 17px; font-weight: 800;
  letter-spacing: -0.5px; color: var(--accent); white-space: nowrap;
}
.logo span { color: var(--text2); font-weight: 400; }
.header-spacer { flex: 1; }
.header-badge {
  background: var(--surface2); border: 1px solid var(--border2);
  border-radius: var(--radius); padding: 4px 10px; font-size: 11px;
  color: var(--text2); display: flex; align-items: center; gap: 6px;
}
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 2s infinite; }
.header-user {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface2); border: 1px solid var(--border2);
  border-radius: var(--radius); padding: 4px 12px; cursor: pointer;
  transition: border-color .2s;
}
.header-user:hover { border-color: var(--accent); }
.avatar {
  width: 26px; height: 26px; border-radius: 4px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--info) 100%);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600; color: var(--bg);
}
.username   { font-size: 12px; color: var(--text2); }
.role-badge {
  font-size: 10px; padding: 2px 6px; border-radius: 3px;
  background: rgba(0,229,160,.12); color: var(--accent);
  border: 1px solid rgba(0,229,160,.25);
  text-transform: uppercase; letter-spacing: .5px;
}

/* ── SIDEBAR ── */
#sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto; padding: 8px 0;
  display: flex; flex-direction: column;
}
.sidebar-section { padding: 16px 16px 4px; }
.sidebar-label {
  font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px;
  color: var(--text3); font-weight: 600;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 16px; cursor: pointer;
  transition: background .15s, color .15s;
  color: var(--text2); font-size: 12px; border-left: 2px solid transparent;
}
.nav-item:hover  { background: var(--surface2); color: var(--text); }
.nav-item.active { background: rgba(0,229,160,.06); color: var(--accent); border-left-color: var(--accent); }
.nav-icon  { font-size: 14px; width: 18px; text-align: center; }
.nav-count {
  margin-left: auto; font-size: 10px; padding: 1px 6px; border-radius: 10px;
  background: var(--surface2); border: 1px solid var(--border2); color: var(--text3);
}
.nav-item.active .nav-count { background: rgba(0,229,160,.1); color: var(--accent); border-color: rgba(0,229,160,.3); }
.sidebar-footer {
  margin-top: auto; padding: 12px 16px;
  border-top: 1px solid var(--border); font-size: 11px; color: var(--text3);
}

/* ── MAIN ── */
#main { overflow-y: auto; background: var(--bg); padding: 24px 28px; }

/* ── PAGES ── */
.page        { display: none; animation: fadeIn .2s ease; }
.page.active { display: block; }

/* ── PAGE HEADER ── */
.page-header    { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 24px; }
.page-title     { font-family: var(--sans); font-size: 22px; font-weight: 700; color: var(--text); }
.page-subtitle  { font-size: 11px; color: var(--text3); margin-top: 3px; font-family: var(--mono); }
.page-actions   { display: flex; gap: 8px; }

/* ── GRID HELPERS ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.mb-14  { margin-bottom: 14px; }
.mb-20  { margin-bottom: 20px; }

/* ── RESPONSIVE ── */
@media(max-width:900px) {
  :root { --sidebar-w: 0px; }
  #sidebar { display: none; }
  #app { grid-template-columns: 1fr; }
}