:root { --agro: #245c39; --agro-dark: #173d27; --surface: #f4f7f5; }
body { background: var(--surface); color: #203128; }
.bg-agro { background: linear-gradient(100deg, var(--agro-dark), var(--agro)); }
.sidebar { min-height: calc(100vh - 56px); background: #fff; box-shadow: 1px 0 0 rgba(0,0,0,.06); }
.sidebar .nav-link { color: #456153; padding: .75rem 1.25rem; border-radius: .5rem; margin: .15rem .75rem; }
.sidebar .nav-link:hover { color: var(--agro); background: #edf5ef; }
.summary-card { border-left: 4px solid var(--agro) !important; }
.login-body { background: radial-gradient(circle at top left, #dfeee3, #f7f9f7 58%); }
.brand-mark { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; color: #fff; background: var(--agro); font-weight: 800; }
.flash-message { z-index: 1100; min-width: min(360px, 90vw); }
@media (max-width: 767.98px) { .sidebar { min-height: auto; } }