body {
    background-color: #1e2124;
    color: #f5f5f5;
}

.sem-topbar {
    background: #111;
    color: #f5f5f5;
    font-size: 0.85rem;
    padding: 4px 0;
}

.sem-toplink {
    color: #f5f5f5;
    text-decoration: none;
    font-size: 0.85rem;
}

.sem-toplink:hover {
    text-decoration: underline;
}

.sem-toplink-button {
    background: none;
    border: none;
    padding: 0;
}

.sem-brandbar {
    background: linear-gradient(90deg, #1f2933, #111827);
    color: #fff;
    padding: 8px 0;
}

.sem-product-title {
    font-size: 1.1rem;
    font-weight: 700;
}

.sem-product-subtitle {
    font-size: 0.9rem;
    opacity: 0.85;
}

.sem-nav {
    background: #2f343a;
    border-bottom: 1px solid #000;
}

.sem-nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.sem-nav-menu li {
    margin-right: 4px;
}

.sem-nav-menu a {
    display: block;
    padding: 10px 18px;
    color: #e5e7eb;
    text-decoration: none;
    font-size: 0.95rem;
}

.sem-nav-menu li.active a,
.sem-nav-menu a:hover {
    background: #ffffff;
    color: #111827;
}

.sem-nav-icons .sem-nav-icon {
    color: #fbbf24;
    margin-left: 12px;
    font-size: 1.25rem;
}

.sem-nav-icon:hover {
    color: #fde68a;
}

.sem-login-bg {
    min-height: 100vh;
    background: radial-gradient(circle at top left, #1f2933 0, #020617 55%);
    position: relative;
    color: #e5e7eb;
}

.sem-login-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 10% 20%, rgba(16, 185, 129, 0.16) 0, transparent 40%),
                radial-gradient(circle at 80% 80%, rgba(59, 130, 246, 0.16) 0, transparent 40%);
    pointer-events: none;
}

.sem-login-wrapper {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.sem-login-card {
    width: 100%;
    max-width: 420px;
    border-radius: 18px;
    background: rgba(15, 23, 42, 0.96);
    border: 1px solid rgba(148, 163, 184, 0.3);
    padding: 24px 24px 16px 24px;
}

.sem-login-brand {
    text-align: left;
}

.sem-login-title {
    font-size: 1.1rem;
    letter-spacing: 0.12em;
    font-weight: 700;
    text-transform: uppercase;
}

.sem-login-subtitle {
    font-size: 1.4rem;
    font-weight: 600;
    margin-top: 2px;
    color: #7dd3fc;
}

.sem-login-body {
    margin-top: 18px;
}

.sem-login-footer {
    text-align: center;
    margin-top: 8px;
    font-size: 0.75rem;
    opacity: 0.7;
}

main.container {
    margin-top: 16px;
    background: #111827;
    padding: 16px;
    border-radius: 12px;
}