:root {
    --oa-primary: #136B3A;
    --oa-secondary: #28A745;
    --oa-bg: #F5F7FA;
    --oa-surface: #FFFFFF;
    --oa-text: #333333;
    --oa-muted: #6C757D;
    --oa-warning: #FF7A00;

    --oa-radius-sm: 10px;
    --oa-radius-md: 14px;
    --oa-radius-lg: 20px;

    --oa-shadow-sm: 0 4px 14px rgba(19, 107, 58, 0.08);
    --oa-shadow-md: 0 12px 28px rgba(19, 107, 58, 0.14);
}

.brand-topbar {
    background: #ffffff;
    border-bottom: 1px solid #e8edf1;
}

.brand-topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    padding-top: 0.4rem;
    padding-bottom: 0.4rem;
}

.brand-topbar-link {
    display: inline-flex;
    align-items: center;
}

.brand-topbar-logo {
    max-height: 52px;
    width: auto;
}

.brand-topbar-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    color: var(--oa-primary);
    font-weight: 600;
    font-size: 1.02rem;
}

.brand-topbar-meta a {
    color: var(--oa-primary);
    text-decoration: none;
}

.brand-topbar-meta a:hover,
.brand-topbar-meta a:focus {
    text-decoration: underline;
}

html,
body {
    background: var(--oa-bg);
    color: var(--oa-text);
    font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
}

h1,
h2,
h3,
h4,
h5,
h6,
.navbar-brand {
    font-family: Poppins, Inter, "Segoe UI", sans-serif;
    color: var(--oa-primary);
    letter-spacing: 0.01em;
}

.navbar {
    background: rgba(255, 255, 255, 0.92) !important;
    border-bottom: 1px solid #e8edf1 !important;
    box-shadow: 0 10px 24px rgba(19, 107, 58, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: 0.01em;
}

.navbar .container {
    padding-top: 0.2rem;
    padding-bottom: 0.2rem;
}

.navbar .nav-link {
    color: var(--oa-text) !important;
    font-weight: 500;
    border-radius: 999px;
    padding: 0.4rem 0.85rem !important;
    margin: 0 0.15rem;
    transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
    color: var(--oa-primary) !important;
    background: #eef7f1;
    transform: translateY(-1px);
}

.navbar .nav-link[aria-current="page"],
.navbar .nav-link.active {
    background: #e4f3ea;
    color: var(--oa-primary) !important;
    font-weight: 600;
}

.navbar-toggler {
    border-radius: 10px;
    border-color: #d4e4da;
    padding: 0.3rem 0.55rem;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(19, 107, 58, 0.2);
}

a {
    color: var(--oa-primary);
}

a:hover,
a:focus {
    color: #0e552f;
}

.oa-hero {
    background: linear-gradient(135deg, #f4f8f3 0%, #ffffff 45%, #eef6ef 100%);
    border: 1px solid #e2ecdf;
    border-radius: var(--oa-radius-lg);
    box-shadow: var(--oa-shadow-md);
    padding: 28px;
}

.oa-hero h1,
.oa-hero h2 {
    font-weight: 700;
    line-height: 1.15;
}

.oa-subtitle {
    color: var(--oa-muted);
    font-size: 1.05rem;
}

.oa-card {
    background: var(--oa-surface);
    border: 1px solid #e5ece8;
    border-radius: var(--oa-radius-md);
    box-shadow: var(--oa-shadow-sm);
    padding: 16px;
}

.oa-card h3,
.oa-card h4 {
    color: var(--oa-primary);
    margin-bottom: 0.55rem;
    font-weight: 600;
}

.oa-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

@media (max-width: 900px) {
    .oa-grid {
        grid-template-columns: 1fr;
    }
}

.oa-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid #d7e6dc;
    background: #f3faf5;
    color: var(--oa-primary);
    font-weight: 600;
}

.oa-btn-primary,
.btn-primary {
    background-color: var(--oa-primary);
    border-color: var(--oa-primary);
    border-radius: 999px;
    font-weight: 600;
}

.oa-btn-primary:hover,
.oa-btn-primary:focus,
.btn-primary:hover,
.btn-primary:focus {
    background-color: #0e552f;
    border-color: #0e552f;
}

.oa-note {
    border-left: 4px solid var(--oa-warning);
    background: #fffaf4;
    color: #73420c;
    border-radius: var(--oa-radius-sm);
    padding: 10px 12px;
}

.footer {
    background: #fbfdfb;
}

.footer-branding {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
}

.footer-brand-logos {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-text-logo {
    max-height: 80px;
    width: auto;
}

.footer-icon-logo {
    max-height: 80px;
    width: auto;
}