/* =====================================================================
   ScolNet — Système de design (surcouche Bootstrap 5)
   Palette : bleu académique + accent ambre. Typo : Inter.
   ===================================================================== */

:root {
  /* Couleurs de marque */
  --sn-primary:        #1d4ed8;   /* bleu académique */
  --sn-primary-dark:   #1e3a8a;
  --sn-primary-soft:   #eff4ff;
  --sn-accent:         #f59e0b;   /* ambre (mentions, alertes positives) */
  --sn-success:        #059669;
  --sn-danger:         #dc2626;
  --sn-warning:        #d97706;
  --sn-info:           #0891b2;

  /* Neutres */
  --sn-ink:            #0f172a;   /* texte principal */
  --sn-muted:          #64748b;   /* texte secondaire */
  --sn-line:           #e2e8f0;   /* bordures */
  --sn-bg:             #f6f8fb;   /* fond application */
  --sn-surface:        #ffffff;

  /* Barre latérale (sombre) */
  --sn-side-bg:        #0f1b3d;
  --sn-side-bg-2:      #16264f;
  --sn-side-ink:       #c7d2e8;
  --sn-side-ink-dim:   #8494b8;
  --sn-side-active:    #ffffff;

  /* Mesures */
  --sn-side-w:         264px;
  --sn-radius:         12px;
  --sn-radius-sm:      9px;
  --sn-shadow:         0 1px 2px rgba(15,23,42,.06), 0 8px 24px rgba(15,23,42,.05);
  --sn-shadow-sm:      0 1px 2px rgba(15,23,42,.08);
}

* { box-sizing: border-box; }

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--sn-bg);
  color: var(--sn-ink);
  font-size: 14.5px;
  line-height: 1.55;
}

/* ---------- Structure ---------- */
.sn-shell { display: flex; min-height: 100vh; }

.sn-sidebar {
  width: var(--sn-side-w);
  flex: 0 0 var(--sn-side-w);
  background: linear-gradient(180deg, var(--sn-side-bg) 0%, var(--sn-side-bg-2) 100%);
  color: var(--sn-side-ink);
  position: fixed; inset: 0 auto 0 0;
  display: flex; flex-direction: column;
  z-index: 1030;
}

.sn-main {
  margin-left: var(--sn-side-w);
  flex: 1; min-width: 0;
  display: flex; flex-direction: column;
}

/* ---------- Marque ---------- */
.sn-brand {
  display: flex; align-items: center; gap: .7rem;
  padding: 1.15rem 1.25rem;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.sn-brand__logo {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--sn-primary) 0%, var(--sn-accent) 130%);
  display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 1.05rem;
  box-shadow: 0 4px 12px rgba(29,78,216,.45);
}
.sn-brand__name { font-weight: 700; color: #fff; font-size: 1.12rem; letter-spacing: -.01em; }
.sn-brand__name span { color: var(--sn-accent); }

/* ---------- Navigation ---------- */
.sn-nav { padding: .75rem .75rem 2rem; overflow-y: auto; flex: 1; }
.sn-nav__label {
  font-size: .68rem; text-transform: uppercase; letter-spacing: .09em;
  color: var(--sn-side-ink-dim); font-weight: 600;
  padding: 1rem .75rem .4rem;
}
.sn-nav__link {
  display: flex; align-items: center; gap: .75rem;
  padding: .6rem .75rem; border-radius: var(--sn-radius-sm);
  color: var(--sn-side-ink); text-decoration: none;
  font-weight: 500; transition: background .15s, color .15s;
}
.sn-nav__link i { width: 20px; text-align: center; font-size: .95rem; opacity: .85; }
.sn-nav__link:hover { background: rgba(255,255,255,.06); color: #fff; }
.sn-nav__link.active {
  background: linear-gradient(90deg, rgba(29,78,216,.35), rgba(29,78,216,.12));
  color: var(--sn-side-active);
  box-shadow: inset 3px 0 0 var(--sn-accent);
}
.sn-nav__link.active i { opacity: 1; }
.sn-nav__badge {
  margin-left: auto; font-size: .68rem; font-weight: 700;
  background: var(--sn-accent); color: #3b2500;
  padding: .05rem .4rem; border-radius: 999px;
}

/* ---------- Barre supérieure ---------- */
.sn-topbar {
  height: 62px; background: var(--sn-surface);
  border-bottom: 1px solid var(--sn-line);
  display: flex; align-items: center; gap: 1rem;
  padding: 0 1.4rem; position: sticky; top: 0; z-index: 1020;
}
.sn-context {
  display: flex; align-items: center; gap: .5rem;
  font-size: .82rem; color: var(--sn-muted);
}
.sn-context__pill {
  display: inline-flex; align-items: center; gap: .4rem;
  background: var(--sn-primary-soft); color: var(--sn-primary-dark);
  font-weight: 600; padding: .3rem .7rem; border-radius: 999px;
}
.sn-search {
  flex: 1; max-width: 380px; position: relative;
}
.sn-search input {
  width: 100%; border: 1px solid var(--sn-line); background: var(--sn-bg);
  border-radius: 999px; padding: .5rem .9rem .5rem 2.2rem; font-size: .85rem;
}
.sn-search i { position: absolute; left: .85rem; top: 50%; transform: translateY(-50%); color: var(--sn-muted); }
.sn-topbar__spacer { flex: 1; }
.sn-iconbtn {
  width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--sn-line);
  background: var(--sn-surface); color: var(--sn-muted);
  display: grid; place-items: center; position: relative; cursor: pointer;
}
.sn-iconbtn:hover { color: var(--sn-primary); border-color: var(--sn-primary); }
.sn-iconbtn__dot { position: absolute; top: 8px; right: 9px; width: 8px; height: 8px; background: var(--sn-danger); border-radius: 50%; border: 2px solid #fff; }
.sn-user { display: flex; align-items: center; gap: .6rem; cursor: pointer; }
.sn-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: linear-gradient(135deg, var(--sn-primary), var(--sn-primary-dark));
  color: #fff; display: grid; place-items: center; font-weight: 700; font-size: .85rem;
}
.sn-user__meta { line-height: 1.15; }
.sn-user__name { font-weight: 600; font-size: .85rem; }
.sn-user__role { font-size: .72rem; color: var(--sn-muted); }

/* ---------- Contenu ---------- */
.sn-content { padding: 1.6rem 1.4rem; flex: 1; }
.sn-page-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 1.3rem; gap: 1rem; flex-wrap: wrap; }
.sn-page-title { font-size: 1.4rem; font-weight: 700; letter-spacing: -.02em; margin: 0; }
.sn-breadcrumb { font-size: .78rem; color: var(--sn-muted); margin-top: .2rem; }
.sn-breadcrumb a { color: var(--sn-muted); text-decoration: none; }

/* ---------- Cartes ---------- */
.sn-card {
  background: var(--sn-surface); border: 1px solid var(--sn-line);
  border-radius: var(--sn-radius); box-shadow: var(--sn-shadow-sm);
}
.sn-card__body { padding: 1.15rem 1.25rem; }
.sn-card__head {
  padding: 1rem 1.25rem; border-bottom: 1px solid var(--sn-line);
  display: flex; align-items: center; justify-content: space-between;
}
.sn-card__title { font-weight: 650; font-size: .98rem; margin: 0; }

/* ---------- Cartes statistiques ---------- */
.sn-stat { display: flex; align-items: center; gap: 1rem; }
.sn-stat__icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  font-size: 1.35rem; flex: 0 0 52px;
}
.sn-stat__val { font-size: 1.7rem; font-weight: 750; letter-spacing: -.02em; line-height: 1; }
.sn-stat__label { font-size: .8rem; color: var(--sn-muted); margin-top: .25rem; }
.sn-stat__trend { font-size: .72rem; font-weight: 600; }
.tone-blue   { background: #eff4ff; color: var(--sn-primary); }
.tone-green  { background: #ecfdf5; color: var(--sn-success); }
.tone-amber  { background: #fffbeb; color: var(--sn-warning); }
.tone-purple { background: #f5f3ff; color: #7c3aed; }
.text-up { color: var(--sn-success); } .text-down { color: var(--sn-danger); }

/* ---------- Tableaux ---------- */
.sn-table { width: 100%; border-collapse: collapse; }
.sn-table th {
  text-align: left; font-size: .72rem; text-transform: uppercase; letter-spacing: .05em;
  color: var(--sn-muted); font-weight: 600; padding: .7rem 1.25rem; border-bottom: 1px solid var(--sn-line);
}
.sn-table td { padding: .8rem 1.25rem; border-bottom: 1px solid var(--sn-line); }
.sn-table tbody tr:last-child td, .sn-table tr:last-child td { border-bottom: 0; }
.sn-tag {
  display: inline-flex; align-items: center; font-size: .72rem; font-weight: 600;
  padding: .2rem .55rem; border-radius: 6px;
}
.sn-tag--green { background: #ecfdf5; color: var(--sn-success); }
.sn-tag--amber { background: #fffbeb; color: var(--sn-warning); }
.sn-tag--red   { background: #fef2f2; color: var(--sn-danger); }

/* ---------- Boutons ---------- */
.btn-sn {
  background: var(--sn-primary); color: #fff; border: 0; font-weight: 600;
  border-radius: var(--sn-radius-sm); padding: .55rem 1.1rem; font-size: .85rem;
}
.btn-sn:hover { background: var(--sn-primary-dark); color: #fff; }
.btn-sn-outline {
  background: #fff; color: var(--sn-primary); border: 1px solid var(--sn-line); font-weight: 600;
  border-radius: var(--sn-radius-sm); padding: .55rem 1.1rem; font-size: .85rem;
}
.btn-sn-outline:hover { border-color: var(--sn-primary); }

/* ---------- Authentification ---------- */
.sn-auth { min-height: 100vh; display: grid; grid-template-columns: 1.1fr 1fr; }
.sn-auth__aside {
  background: linear-gradient(150deg, var(--sn-side-bg) 0%, var(--sn-primary-dark) 100%);
  color: #fff; padding: 3.5rem; display: flex; flex-direction: column; justify-content: space-between;
  position: relative; overflow: hidden;
}
.sn-auth__aside::after {
  content: ""; position: absolute; width: 460px; height: 460px; right: -140px; bottom: -160px;
  background: radial-gradient(circle, rgba(245,158,11,.28), transparent 70%); border-radius: 50%;
}
.sn-auth__form { display: grid; place-items: center; padding: 2rem; }
.sn-auth__card { width: 100%; max-width: 380px; }
.sn-field { margin-bottom: 1rem; }
.sn-field label { font-size: .8rem; font-weight: 600; margin-bottom: .35rem; display: block; }
.sn-field input {
  width: 100%; border: 1px solid var(--sn-line); border-radius: var(--sn-radius-sm);
  padding: .65rem .85rem; font-size: .9rem;
}
.sn-field input:focus { outline: 0; border-color: var(--sn-primary); box-shadow: 0 0 0 3px var(--sn-primary-soft); }

/* ---------- Responsive ---------- */
@media (max-width: 992px) {
  .sn-sidebar { transform: translateX(-100%); transition: transform .25s; }
  .sn-sidebar.open { transform: translateX(0); }
  .sn-main { margin-left: 0; }
  .sn-auth { grid-template-columns: 1fr; }
  .sn-auth__aside { display: none; }
}