:root {
    --tni-blue: #003366;
    --tni-sky: #007cc2;
    --tni-gold: #ffcc00;
    --dark-grey: #333333;
    --light-grey: #f4f4f4;
    --white: #ffffff;
    --font-primary: 'Roboto', sans-serif;
    --font-heading: 'Oswald', sans-serif;
    --primary-blue: var(--tni-blue);
    --sky-blue: var(--tni-sky);
    --accent-gold: var(--tni-gold);
    --text-dark: var(--dark-grey);
    --text-light: var(--white);
    --bg-light: var(--light-grey);
    --sidebar-width: 260px;
    --header-height: 70px;
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    height: 100vh;
    font-family: var(--font-primary);
    background-color: var(--light-grey);
    color: var(--dark-grey);
    line-height: 1.6;
    overflow: hidden;
}

.login-body {
    min-height: 100vh;
    font-family: var(--font-primary);
    background: linear-gradient(
        rgba(0, 51, 102, 0.85),
        rgba(0, 34, 68, 0.9)
    );
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    background: var(--white);
    width: 100%;
    height: 100%;
    max-width: 400px;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.5);
    text-align: center;
    position: relative;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--tni-gold);
}

.login-header {
    margin-bottom: 30px;
}

.login-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 15px;
}

.login-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.login-header h2 {
    color: var(--tni-blue);
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

.login-header p {
    color: #666;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.login-form {
    text-align: left;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    margin-bottom: 8px;
    color: var(--dark-grey);
    font-weight: 500;
    font-size: 0.9rem;
}

.login-form input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    background-color: #f9f9f9;
    transition: 0.3s;
}

.login-form input:focus {
    border-color: var(--tni-sky);
    background-color: var(--white);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0,124,194,0.1);
}

.btn-login {
    width: 100%;
    padding: 12px;
    background-color: var(--tni-blue);
    color: var(--white);
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-login:hover {
    background-color: #002244;
    box-shadow: 0 5px 15px rgba(0,51,102,0.3);
}

.login-footer {
    margin-top: 25px;
    font-size: 0.8rem;
    color: #888;
    line-height: 1.5;
    text-align: center;
}

@media (max-width: 480px) {
    .login-body {
        padding: 20px;
    }

    .login-container {
        padding: 30px 20px;
        max-width: 100%;
        border-radius: 8px;
    }

    .login-logo {
        width: 65px;
        height: 65px;
        margin-bottom: 10px;
    }

    .login-header h2 {
        font-size: 1.3rem;
    }

    .login-header p {
        font-size: 0.8rem;
        letter-spacing: 0.5px;
    }

    .login-form label {
        font-size: 0.85rem;
    }

    .login-form input {
        padding: 10px;
        font-size: 0.95rem;
    }

    .captcha-box {
        padding: 12px;
        gap: 10px;
    }

    .captcha-box span {
        font-size: 0.8rem;
    }

    .btn-login {
        padding: 11px;
        font-size: 0.95rem;
    }

    .login-footer {
        font-size: 0.75rem;
    }
}