:root {
    --sidebar-w: 250px;
    --sidebar-bg: #1e293b;
    --sidebar-fg: #cbd5e1;
    --sidebar-active: #2563eb;
    --topbar-h: 60px;
    --bg: #f5f6fa;
    --orange: #fd7e14;
}

* { box-sizing: border-box; }
body { background: var(--bg); font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }

/* ---------- Layout ---------- */
.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: var(--sidebar-w);
    background: var(--sidebar-bg);
    color: var(--sidebar-fg);
    position: fixed; inset: 0 auto 0 0;
    display: flex; flex-direction: column;
    z-index: 1030;
    transition: transform .25s ease;
}
.sidebar-brand {
    height: var(--topbar-h);
    display: flex; align-items: center; gap: .6rem;
    padding: 0 1.25rem; font-weight: 700; font-size: 1.15rem; color: #fff;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar-brand i { color: var(--sidebar-active); }
.sidebar-nav { padding: .75rem .5rem; overflow-y: auto; }
.sidebar .nav-link {
    color: var(--sidebar-fg); border-radius: .5rem;
    padding: .6rem .85rem; margin-bottom: .15rem;
    display: flex; align-items: center; gap: .65rem; font-size: .92rem;
}
.sidebar .nav-link:hover { background: rgba(255,255,255,.06); color: #fff; }
.sidebar .nav-link.active { background: var(--sidebar-active); color: #fff; }
.sidebar .nav-link.nav-group { font-weight: 600; }
.sidebar .nav.sub .nav-link { padding-left: 2.2rem; font-size: .88rem; }
.sidebar .chevron { transition: transform .2s; }

.main {
    flex: 1; margin-left: var(--sidebar-w);
    display: flex; flex-direction: column; min-width: 0;
}
.topbar {
    height: var(--topbar-h);
    background: #fff; border-bottom: 1px solid #e5e7eb;
    display: flex; align-items: center; padding: 0 1.25rem;
    position: sticky; top: 0; z-index: 1020;
}
.content { padding: 1.5rem; flex: 1; }

/* ---------- Login ---------- */
.login-body {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #2563eb 100%);
}
.login-card { width: 100%; max-width: 400px; border-radius: 1rem; box-shadow: 0 1.5rem 3rem rgba(0,0,0,.3); }
.login-logo {
    width: 64px; height: 64px; margin: 0 auto;
    background: linear-gradient(135deg, #1e293b, #2563eb);
    color: #fff; border-radius: 1rem;
    display: flex; align-items: center; justify-content: center; font-size: 1.6rem;
}

/* ---------- Tarjetas / Semáforos ---------- */
.card { border: none; border-radius: .75rem; }
.card-depto { transition: transform .15s, box-shadow .15s; }
.card-depto:hover { transform: translateY(-3px); box-shadow: 0 .5rem 1.5rem rgba(0,0,0,.1) !important; }

.semaforo-dot { width: 16px; height: 16px; border-radius: 50%; display: inline-block; }
.bg-orange { background-color: var(--orange) !important; }
.text-orange { color: var(--orange) !important; }

/* ---------- Spinner global ---------- */
#spinner-global {
    position: fixed; inset: 0; background: rgba(255,255,255,.6);
    display: none; align-items: center; justify-content: center; z-index: 2000;
}
#spinner-global.show { display: flex; }

/* ---------- Animación ---------- */
.fade-in { animation: fadeIn .3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- Responsive ---------- */
@media (max-width: 767.98px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main { margin-left: 0; }
}