html {
    font-size: 14px;
    position: relative;
    min-height: 100%;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

/* Адаптивный фон */
body {
    background: linear-gradient(45deg, #071d49, #5880c1, #071d49, #5880c1);
    background-size: 300% 300%;
    animation: gradient 15s ease infinite;
    margin-bottom: 60px;
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

@keyframes gradient {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* Адаптивный контейнер */
.container {
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}

@media (min-width: 576px) {
    .container {
        max-width: 540px;
    }
}

@media (min-width: 768px) {
    .container {
        max-width: 720px;
    }
}

@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}

@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

/* Навбар - сохраняем дизайн, делаем адаптивным */
.navbar {
    background: white;
    border-radius: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 12px 20px;
    margin: 15px;
}

@media (max-width: 768px) {
    .navbar {
        border-radius: 20px;
        padding: 10px 15px;
        margin: 10px;
    }
}

@media (max-width: 576px) {
    .navbar {
        border-radius: 15px;
        padding: 8px 12px;
        margin: 8px;
    }
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 600;
    color: #071D49 !important;
}

@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1.2rem;
    }
}

/* Адаптивный футер */
.footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    white-space: nowrap;
    line-height: 60px;
    color: rgba(255,255,255,0.8);
    text-align: center;
}

@media (max-width: 768px) {
    .footer {
        line-height: 40px;
        font-size: 0.9rem;
    }
}

@media (max-width: 576px) {
    .footer {
        line-height: 30px;
        font-size: 0.8rem;
    }
}

/* Фокус состояния */
.btn:focus, .btn:active:focus, .btn-link.nav-link:focus,
.form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}