/* ================= BASE STYLES ================= */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    padding: 20px;
    font-family: 'Arial', sans-serif;
}

.login-box {
    background: #ffffff;
    width: 100%;
    max-width: 420px;
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    animation: fadeIn 0.4s ease-in-out;
    transition: all 0.3s ease;
}

.login-box h2 {
    text-align: center;
    margin-bottom: 25px;
    color: #333;
    font-size: 1.7rem;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #444;
    font-size: 14px;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 15px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.input-group input:focus {
    border-color: #2a5298;
    outline: none;
    box-shadow: 0 0 0 3px rgba(42, 82, 152, 0.1);
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: #2a5298;
    color: white;
    font-size: 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
    font-weight: 600;
}

.login-btn:hover {
    background: #1e3c72;
    transform: translateY(-2px);
}

.login-btn:active {
    transform: translateY(0);
}

.error {
    background: #ffe5e5;
    color: #b30000;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 15px;
    text-align: center;
    font-size: 14px;
    border-left: 4px solid #dc3545;
}

.back-link {
    margin-top: 18px;
    text-align: center;
}

.back-link a {
    color: #2a5298;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.back-link a:hover {
    text-decoration: underline;
    color: #1e3c72;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ================= RESPONSIVE ================= */

/* Large tablets */
@media (max-width: 1024px) {
    .login-box {
        max-width: 400px;
    }
}

/* Tablets (medium screens) */
@media (max-width: 768px) {
    .login-wrapper {
        padding: 18px;
    }

    .login-box {
        max-width: 90%;
        padding: 30px;
    }

    .login-box h2 {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }

    .input-group {
        margin-bottom: 18px;
    }

    .input-group label {
        font-size: 13.5px;
    }

    .input-group input {
        padding: 10px;
        font-size: 14px;
    }

    .login-btn {
        font-size: 15px;
        padding: 11px;
    }

    .back-link a {
        font-size: 13px;
    }

    .error {
        font-size: 13px;
        padding: 9px;
    }
}

/* Small phones */
@media (max-width: 480px) {
    .login-wrapper {
        padding: 15px;
    }

    .login-box {
        padding: 25px;
        border-radius: 8px;
    }

    .login-box h2 {
        font-size: 1.3rem;
        margin-bottom: 18px;
    }

    .input-group {
        margin-bottom: 16px;
    }

    .input-group label {
        font-size: 13px;
        margin-bottom: 5px;
    }

    .input-group input {
        padding: 9px;
        font-size: 13px;
    }

    .login-btn {
        font-size: 14px;
        padding: 10px;
    }

    .back-link {
        margin-top: 16px;
    }

    .back-link a {
        font-size: 12px;
    }

    .error {
        font-size: 12px;
        padding: 8px;
    }
}

/* Extra small phones */
@media (max-width: 360px) {
    .login-box {
        padding: 20px;
    }

    .login-box h2 {
        font-size: 1.2rem;
        margin-bottom: 16px;
    }

    .input-group {
        margin-bottom: 14px;
    }

    .input-group label {
        font-size: 12px;
    }

    .input-group input {
        padding: 8px;
        font-size: 12.5px;
    }

    .login-btn {
        font-size: 13px;
        padding: 9px;
    }

    .back-link a {
        font-size: 11px;
    }

    .error {
        font-size: 11px;
        padding: 7px;
    }
}