:root {
    --cs-primary: #082b49;
    --cs-secondary: #0f4c81;
    --cs-accent: #00a6d6;
    --cs-soft: #eef6fb;
    --cs-bg: #f5f7fb;
    --cs-text: #1f2937;
    --cs-muted: #6b7280;
}

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

.app-navbar {
    background: linear-gradient(90deg, var(--cs-primary), var(--cs-secondary));
}

.app-brand {
    font-weight: 700;
    font-size: 1rem;
}

.nav-link {
    font-weight: 500;
}

.page-title {
    font-weight: 800;
    color: var(--cs-primary);
}

.help-box {
    background: var(--cs-soft);
    border-left: 5px solid var(--cs-accent);
    border-radius: 14px;
    padding: 14px 16px;
    color: var(--cs-primary);
}

.app-card {
    border: 0;
    border-radius: 20px;
    box-shadow: 0 8px 24px rgba(8, 43, 73, 0.10);
}

.btn-cs {
    background: var(--cs-secondary);
    color: white;
    border: 0;
    border-radius: 14px;
    font-weight: 700;
    padding: 12px 18px;
}

.btn-cs:hover {
    background: var(--cs-primary);
    color: white;
}

.btn-big {
    width: 100%;
    padding: 16px;
    font-size: 1.05rem;
    border-radius: 16px;
}

.kpi-card {
    border-left: 6px solid var(--cs-accent);
}

.text-cs-muted {
    color: var(--cs-muted);
}

.rating-option {
    border: 2px solid #e5e7eb;
    border-radius: 16px;
    padding: 14px;
    text-align: center;
    background: white;
    cursor: pointer;
    transition: .15s ease-in-out;
}

.rating-option:hover {
    border-color: var(--cs-accent);
    background: var(--cs-soft);
}

.rating-option input {
    transform: scale(1.3);
    margin-bottom: 8px;
}

.mobile-card {
    border-radius: 22px;
    padding: 18px;
}

.footer {
    color: var(--cs-muted);
    font-size: 13px;
}

@media (max-width: 768px) {
    .container {
        padding-left: 14px;
        padding-right: 14px;
    }

    .page-title {
        font-size: 1.5rem;
    }

    .app-card {
        border-radius: 18px;
    }

    table {
        font-size: 0.88rem;
    }

    .btn {
        margin-bottom: 6px;
    }
}

.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.18);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    letter-spacing: .5px;
}

.brand-subtitle {
    font-size: .72rem;
    opacity: .85;
    margin-top: -2px;
}

.navbar .nav-link {
    border-radius: 12px;
    padding: 8px 12px;
}

.navbar .nav-link.active,
.navbar .nav-link:hover {
    background: rgba(255, 255, 255, 0.14);
}

@media (max-width: 768px) {
    .navbar-nav .nav-link {
        padding: 12px 14px;
        margin-bottom: 4px;
        background: rgba(255, 255, 255, 0.08);
    }

    .app-brand {
        font-size: .95rem;
    }

    .brand-mark {
        width: 38px;
        height: 38px;
    }
}

.app-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, #0d6efd, #0b5ed7);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    box-shadow: 0 8px 18px rgba(13, 110, 253, 0.25);
}