/* ============================================================
   PSS Curriculum — design system
   Bootstrap 5 + custom "--lt-*" tokens + Inter
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* Brand palette */
  --lt-navy-900: #16294d;
  --lt-navy-700: #23467e;
  --lt-navy-500: #3a64a8;
  --lt-navy-100: #e8eef7;
  --lt-gold:     #e3b341;
  --lt-teal:     #2a9d8f;

  /* Semantic tokens */
  --lt-primary: var(--lt-navy-700);
  --lt-primary-dark: var(--lt-navy-900);
  --lt-accent: var(--lt-gold);
  --lt-bg: #f5f7fb;
  --lt-surface: #ffffff;
  --lt-border: #e4e8f0;
  --lt-text: #1f2937;
  --lt-muted: #6b7a99;

  --lt-radius: 14px;
  --lt-radius-sm: 9px;
  --lt-shadow: 0 1px 2px rgba(22,41,77,.06), 0 8px 24px rgba(22,41,77,.07);
  --lt-shadow-sm: 0 1px 2px rgba(22,41,77,.08);
  --lt-sidebar-w: 256px;

  /* Map Bootstrap theme onto brand */
  --bs-primary: var(--lt-primary);
  --bs-primary-rgb: 35, 70, 126;
  --bs-link-color: var(--lt-navy-700);
  --bs-link-hover-color: var(--lt-navy-900);
  --bs-body-font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

html { font-size: 15px; position: relative; min-height: 100%; }
body {
  font-family: var(--bs-body-font-family);
  color: var(--lt-text);
  background: var(--lt-bg);
}

a { text-decoration: none; }
.text-muted-2 { color: var(--lt-muted) !important; }

/* ---------- Buttons ---------- */
.btn-brand {
  background: var(--lt-primary);
  border-color: var(--lt-primary);
  color: #fff;
}
.btn-brand:hover { background: var(--lt-primary-dark); border-color: var(--lt-primary-dark); color: #fff; }
.btn-outline-brand { color: var(--lt-primary); border-color: var(--lt-primary); }
.btn-outline-brand:hover { background: var(--lt-primary); color: #fff; }
.btn:focus, .btn:active:focus, .form-control:focus, .form-select:focus, .form-check-input:focus {
  box-shadow: 0 0 0 .2rem rgba(35,70,126,.18);
  border-color: var(--lt-navy-500);
}

/* ---------- Cards / surfaces ---------- */
.lt-card {
  background: var(--lt-surface);
  border: 1px solid var(--lt-border);
  border-radius: var(--lt-radius);
  box-shadow: var(--lt-shadow-sm);
}
.lt-card .card-header,
.lt-card-header {
  border-bottom: 1px solid var(--lt-border);
  background: transparent;
  font-weight: 600;
}

/* ============================================================
   Public (marketing) chrome
   ============================================================ */
.lt-public-nav {
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--lt-border);
}
.lt-hero {
  background:
    radial-gradient(1100px 500px at 80% -10%, rgba(58,100,168,.18), transparent),
    linear-gradient(180deg, #fbfcff, var(--lt-bg));
}
.lt-hero h1 { font-weight: 800; letter-spacing: -.02em; color: var(--lt-navy-900); }
.lt-eyebrow {
  display: inline-flex; align-items: center; gap: .4rem;
  font-weight: 600; font-size: .8rem; letter-spacing: .04em; text-transform: uppercase;
  color: var(--lt-navy-700); background: var(--lt-navy-100);
  padding: .3rem .7rem; border-radius: 999px;
}
.lt-feature-icon {
  width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--lt-navy-100); color: var(--lt-navy-700); font-size: 1.25rem;
}

/* ============================================================
   App shell (authenticated)
   ============================================================ */
.lt-shell { display: flex; min-height: 100vh; }

.lt-sidebar {
  width: var(--lt-sidebar-w);
  flex: 0 0 var(--lt-sidebar-w);
  background: linear-gradient(180deg, var(--lt-navy-900), #11203d);
  color: #c9d4e8;
  position: fixed; inset: 0 auto 0 0; height: 100vh;
  display: flex; flex-direction: column;
  z-index: 1030;
}
.lt-sidebar .lt-brand {
  display: flex; align-items: center; gap: .6rem;
  padding: 1rem 1.1rem; color: #fff; font-weight: 700;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.lt-sidebar .lt-brand img { height: 36px; width: auto; }
.lt-nav { padding: .75rem .6rem; overflow-y: auto; flex: 1; }
.lt-nav .lt-nav-label {
  font-size: .68rem; text-transform: uppercase; letter-spacing: .08em;
  color: #7f90b3; padding: .9rem .7rem .35rem;
}
.lt-nav a {
  display: flex; align-items: center; gap: .65rem;
  padding: .55rem .75rem; margin: .1rem 0;
  border-radius: 10px; color: #c9d4e8; font-weight: 500; font-size: .92rem;
  transition: background .12s, color .12s;
}
.lt-nav a .lt-ico { width: 20px; text-align: center; opacity: .9; }
.lt-nav a:hover { background: rgba(255,255,255,.07); color: #fff; }
.lt-nav a.active { background: var(--lt-navy-700); color: #fff; }
.lt-sidebar .lt-side-foot {
  padding: .8rem 1rem; font-size: .78rem; color: #7f90b3;
  border-top: 1px solid rgba(255,255,255,.08);
}

.lt-main { flex: 1; margin-left: var(--lt-sidebar-w); display: flex; flex-direction: column; min-width: 0; }
.lt-topbar {
  height: 62px; background: var(--lt-surface);
  border-bottom: 1px solid var(--lt-border);
  display: flex; align-items: center; gap: 1rem;
  padding: 0 1.4rem; position: sticky; top: 0; z-index: 1020;
}
.lt-topbar .lt-page-title { font-weight: 700; color: var(--lt-navy-900); margin: 0; font-size: 1.12rem; }
.lt-content { padding: 1.5rem 1.6rem 3rem; }

.lt-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--lt-navy-700); color: #fff;
  display: grid; place-items: center; font-weight: 600; font-size: .85rem;
}

/* ---------- Stat cards ---------- */
.lt-stat { display: flex; align-items: center; gap: .9rem; }
.lt-stat .lt-stat-ico {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  font-size: 1.3rem; background: var(--lt-navy-100); color: var(--lt-navy-700);
}
.lt-stat .lt-stat-val { font-size: 1.6rem; font-weight: 800; line-height: 1; color: var(--lt-navy-900); }
.lt-stat .lt-stat-lbl { color: var(--lt-muted); font-size: .82rem; }

/* ---------- Tables ---------- */
.lt-table { background: var(--lt-surface); }
.lt-table thead th {
  font-size: .74rem; text-transform: uppercase; letter-spacing: .04em;
  color: var(--lt-muted); border-bottom: 1px solid var(--lt-border); font-weight: 600;
}
.lt-table td { vertical-align: middle; }

/* ---------- Badges / pills ---------- */
.lt-pill {
  display: inline-block; padding: .18rem .55rem; border-radius: 999px;
  font-size: .74rem; font-weight: 600; background: var(--lt-navy-100); color: var(--lt-navy-700);
}
.lt-pill-gold { background: #fbf1d6; color: #9a7414; }
.lt-pill-teal { background: #d9f1ee; color: #1c6b61; }
.lt-pill-muted { background: #eef1f6; color: var(--lt-muted); }

/* ---------- Bar mini-chart ---------- */
.lt-bar-row { display: grid; grid-template-columns: 110px 1fr 44px; align-items: center; gap: .6rem; margin: .35rem 0; }
.lt-bar-track { background: var(--lt-navy-100); border-radius: 999px; height: 9px; overflow: hidden; }
.lt-bar-fill { background: linear-gradient(90deg, var(--lt-navy-500), var(--lt-navy-700)); height: 100%; border-radius: 999px; }
.lt-bar-label { font-size: .82rem; color: var(--lt-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lt-bar-val { font-size: .82rem; font-weight: 600; text-align: right; color: var(--lt-navy-900); }

/* ---------- Responsive sidebar ---------- */
.lt-sidebar-toggle { display: none; }
@media (max-width: 991.98px) {
  .lt-sidebar { transform: translateX(-100%); transition: transform .2s ease; }
  .lt-sidebar.show { transform: translateX(0); }
  .lt-main { margin-left: 0; }
  .lt-sidebar-toggle { display: inline-flex; }
}

footer.lt-public-foot { border-top: 1px solid var(--lt-border); color: var(--lt-muted); background: var(--lt-surface); }