:root {
    --primary-color: #37517e;
    /* Hlavná modrá farba */
    --secondary-color: #2e8fe0;
    /* Tmavšia modrá pre hover */
    --background-color: #f7f9fc;
    /* Svetlé pozadie */
    --card-background: #ffffff;
    /* Biely panel */
    --text-color: #222b45;
    /* Tmavý text */
    --input-background: #edf1f7;
    /* Svetlejší vstup */
    --input-border: #e4e9f2;
    /* Svetlý okraj vstupu */
    --button-hover: #3194e0;
    /* Modrý hover tlačidla */
    --link-color: #37517e;
    /* Modré odkazy */
    --link-hover: #2e8fe0;
    /* Tmavší modrý hover odkazov */
    --border-radius: 0.5rem;
    --box-shadow: 0 0.2rem 0.6rem rgba(0, 0, 0, 0.05);
    /* Jemnejší tieň */
}

body {
    font-family: 'Open Sans', sans-serif;
    background-color: var(--background-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    color: var(--text-color);
    font-size: 0.9rem;
    line-height: 1.6;
}

.login-card {
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    width: 100%;
    max-width: 500px;
    padding: 2.5rem;
    box-sizing: border-box;
    text-align: center;
    border: none;
    /* Remove default Bootstrap card border */
}

.login-card .card-title {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 600;
    text-align: left;
    /* Ensure labels are left-aligned */
}

.form-control {
    padding: 0.9rem 1rem;
    border: 1px solid var(--input-border);
    border-radius: var(--border-radius);
    background-color: var(--input-background);
    color: var(--text-color);
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.15rem rgba(66, 169, 255, 0.25);
    background-color: #ffffff;
    /* Make background white on focus */
}

.form-check {
    text-align: left;
    padding-left: 1.25rem;
    /* Default Bootstrap padding for checkbox */
}

.form-check-input {
    margin-top: 0.3rem;
    /* Adjust checkbox alignment */
    accent-color: var(--primary-color);
    /* Modrá farba pre checkbox */
}

.form-check-label {
    color: var(--text-color);
    font-weight: normal;
    /* Override Bootstrap bold label for checkbox */
}

.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
    /* Allow wrapping on small screens */
}

.form-actions .form-check {
    margin-bottom: 0;
    /* Remove bottom margin from checkbox in flex */
}

.forgot-password {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: var(--link-hover);
}

.btn-login {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-login:hover {
    background-color: var(--button-hover);
}

.social-login {
    margin-top: 2rem;
    padding-bottom: 1rem;
    text-align: center;
}

.social-login p {
    margin-bottom: 1rem;
    color: var(--text-color);
    position: relative;
    font-weight: 400;
}

.social-login p::before {
    left: 0;
}

.social-login p::after {
    right: 0;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    /* Bootstrap `gap` is not native, use margin right or flexbox gaps if supported/polyfill */
    margin-bottom: 2rem;
}

.social-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: var(--input-background);
    color: var(--text-color);
    font-size: 1.2rem;
    text-decoration: none;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.social-icon.google:hover {
    background-color: #DB4437;
    color: white;
}

.social-icon.facebook:hover {
    background-color: #4267B2;
    color: white;
}

.social-icon.twitter:hover {
    background-color: #1DA1F2;
    color: white;
}

.register-link {
    text-align: center;
    color: var(--text-color);
}

.register-link a {
    color: var(--link-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.register-link a:hover {
    color: var(--link-hover);
}

.top-left-arrow {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1050;
    font-size: 24px;
    color: #37517e;
    text-decoration: none;
}

.top-left-arrow:hover {
    color: #2f4367;
}

/* Responsive styles */

@media (max-width: 400px) {

    .login-card {
        padding: 1rem;
    }

    .form-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .forgot-password {
        margin-top: 0.5rem;
    }

    .top-left-arrow {
        top: 2px;
        left: 10px;
    }
}